Source: LOUISIANA STATE UNIVERSITY submitted to NRP
INVESTIGATION OF NUTRIENT AND CULTURAL MANAGEMENT PRACTICES IN LOUISIANA RICE AND VARIETY TESTING OF RICE ROTATIONAL CROPS
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
COMPLETE
Funding Source
HATCH
Reporting Frequency
Annual
Accession No.
1011568
Grant No.
(N/A)
Cumulative Award Amt.
(N/A)
Proposal No.
(N/A)
Multistate No.
(N/A)
Project Start Date
Nov 14, 2016
Project End Date
Sep 30, 2020
Grant Year
(N/A)
Program Code
[(N/A)]- (N/A)
Recipient Organization
LOUISIANA STATE UNIVERSITY
202 HIMES HALL
BATON ROUGE,LA 70803-0100
Performing Department
Rice Research Station
Non Technical Summary
Rice is an important crop in the midsouthern United States. Cultural and nutrient management practices can greatly influence rice grain yields. This project will examinerice cultural and nutrient management practices that may influence rice yields, profitability, and sustainability in Louisiana and throughout the midsouthern United States.
Animal Health Component
90%
Research Effort Categories
Basic
10%
Applied
90%
Developmental
(N/A)
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
1021530106030%
2041530106030%
2051530106030%
2051599106010%
Knowledge Area
204 - Plant Product Quality and Utility (Preharvest); 102 - Soil, Plant, Water, Nutrient Relationships; 205 - Plant Management Systems;

Subject Of Investigation
1599 - Grain crops, general/other; 1530 - Rice;

Field Of Science
1060 - Biology (whole systems);
Goals / Objectives
OBJECTIVES:Evaluate nitrogen (N) management practices for improved efficiency and productivity in rice production systems.Evaluate cultural management practices on rice main and ratoon crops.Evaluate performance of soybean, grain sorghum, and wheat varieties in southwest Louisiana.
Project Methods
Multiple studies evaluating N application rates and timings needed to produce optimum rice grain yields will be conducted for newly developed rice cultivars, advanced experimental lines, and hybrids. A minimum of three locations across the state will be used in these trials annually. More than one rice cultivar will be tested each year, in independent trials, depending on the number of newly released or potential new rice cultivar releases each year. Experiments will be conducted at the H. Rouse Caffey Rice Research Station (RRS) in Crowley, Louisiana, and at least two off-station locations annually. Potential off-station locations will include Lake Arthur in Vermilion Parish, Palmeto in St. Landry Parish, Gilbert in Franklin Parish, and Monroe in Richland Parish. The three selected locations will represent differing soils and/or environmental conditions. The soil series at each location include a Crowley silt loam (fine, smectitic, thermic Typic Albaqualfs) at the RRS, a Kaplan silt loam (fine, smectitic, thermic Aeric Chromic Vertic Epiaqualfs) at the Vermilion Parish site, a Sharkey clay (very-fine, smectitic, thermic Chromic Epiaquerts) at the Franklin Parish site, a Perry clay (very-fine, smectitic, thermic, Chromic Epiaquerts) at the Richland Parish site, and a Tensas (fine, smectitic, thermic Chromic Vertic Epiaqualfs)-Sharkey (very-fine, smectitic, thermic Chromic Epiaquerts) complex at the St. Landry Parish site. Rice varieties and hybrids will be tested using a drill-seeded, delayed flood cultural system for one to three years.Sites will be prepared according to the off-station cooperator preference and at the RRS using a fall-stale seedbed. Rice will be drilled at the rate of 430 seed m-2 using an Almaco no-till research grain drill equipped with a belt driven cone, double-disk openers, and press wheels on 20-cm rows. Individual plots will consist of seven drill rows measuring 4.86 m in length. Plots will be permanently flooded to a depth of 6 to 10 cm approximately 1 month following seedling emergence. Rice will be managed according to recommendations found in the Rice Varieties and Management Tips publication (Harrell et al., 2016a). Experimental sites will be fertilized with P and K according to Louisiana State University Agriculture Center Soil Testing and Plant Analysis Laboratory soil test recommendations each year.Nitrogen (46-0-0) will be applied in single or split applications with initial applications made prior to establishment of the permanent flood (PF). These applications will be followed by applications at panicle differentiation (PD). Permanent Flood N will be applied at 0, 34, 67, 101, 134, 168, 202, 235, or 269 kg ha-1. Four treatments will be included to represent split N applications between PF and PD. Nitrogen will always be applied at PD at 50 kg ha-1, representing the rate normally applied aerially by Louisiana producers, preceded by PF applications of 50, 84, 118, and 151 kg ha-1. Lodging, maturity, mature plant height, grain moisture, and grain yield will be determined. Yield and grain moisture will be determined with a Wintersteiger Delta small plot combine equipped with a 5.6 m header. Lodging rate will range from 1 to 5 and will represent rice standing perpendicular and parallel to the soil surface, respectively. Lodging severity will be based on a scale of 0 (no lodging) to 100% (all plants lodged). Maturity will be determined by documenting the number of days from seeding until 50% of the panicles in a plot emerge from the leaf sheaths. Plant height will be recorded prior to harvest and will be measured from the soil surface to the tip of an extended panicle. Experiments at the RRS and in Vermilion Parish will be ratoon cropped.Treatments in each experiment will be arranged as a randomized complete block experimental design with four replications. Factors will include the nine single preflood rates in addition to the four split N application rates for a total of 13 treatments. Cultivars will be tested in separate experiments at each location, so cultivar will not be a factor in the statistical analysis. Data from each experiment will initially be analyzed using PROC MIXED in SAS (SAS Institute, 2003) with fertilizer treatment as a fixed effect and year, replications (nested within year), and all interactions containing either of these as random effects. In addition, grain yields over a 3-year period and N fertilization rates will be fit to linear-plateau, quadratic-plateau, and quadratic models in SAS analyzed using PROC NLIN. Economical optimal N rates using current cost estimates of N and sales price of rice will be determined.

Progress 11/14/16 to 09/30/20

Outputs
Target Audience:Audiences for this project include rice, soybean, grain sorghum, and wheat producers, consultants, and breeders, as well as soil fertility and agronomy professionals. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?The project generated several presentations at professional meetings. Multiple journal articles, newsletter articles, popular press articles, field day presentations, and grower meeting presentations provided information on fertilizer and agronomic recommendations to producers, crop consultants, and extension agents. How have the results been disseminated to communities of interest?The project disseminated information via presentations at professional meetings, field days, grower meetings, consultant/extension agent trainings, and grower advisory group meetings. Further dissemination was accomplished by publishing in scientific journals, newsletters, LSU AgCenter publications, and popular press magazines. What do you plan to do during the next reporting period to accomplish the goals? Nothing Reported

Impacts
What was accomplished under these goals? Improved agronomic, fertility, and cultural management recommendations based on sound research for rice and rice rotational crops have been developed as a result of this project. Seven recently released rice varieties (CLJ01, PVL02, CLL15, CLM04, CLL17, Jewl, and Lynx), 5 experimental lines (LA2140, 1902026, 1702183, 1902202, and 1902212), 4 RiceTec hybrids (RT7321 FP, RT521 FP, RT7301, and RT7501), and 1 LSU experimental hybrid (LAH200) were evaluated for their response to nitrogen (N) application rate and time of application at the H. Rouse Caffey Rice Research Station (HRCRRS) and cooperator locations in Calcasieu (CP), Tensas (TP), St. Landry (SLP), and Richland (RP) parishes. Multiple trials were conducted at the HRCRRS to evaluate the optimal N rate and method of application for rice varieties and hybrids when grown using furrow irrigation as compared with traditional flooding. The RiceTec hybrid CLXL745 and CL153 were evaluated in both water management systems. A trial was conducted to evaluate enhanced efficiency fertilizers in a furrow irrigated rice production system. Two N fertilizer sources were evaluated (NBPR-Urea and SuperU), three N rates (0, 97, and 138 lb N/A), and three application methods (single application, 2-way split, and 3-way split). Soybean, grain sorghum, and wheat varieties were evaluated in variety trials, and results were published.

Publications

  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Dixon, W.R., B.E. Morales-Contreras, M. Kongchum, Z. Xu, D. Harrell, H.R. Moskowitz, and L Wicker. 2020. Aroma, quality, and consumer mindsets for shelf-stable rice thermally processed by reciprocal agitation. Foods (2020) 9, 1559; doi:10.3390/foods9111559.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Addison, C.K., B. Angira, M. Kongchum, D.L. Harrell, N. Baisakh, S.D. Linscombe, and A.N. Famoso. 2020. Characterization of haplotype diversity in the BADH2 aroma gene and development of a KASP SNP assay for predicting aroma in U.S. rice. Rice (2020) 13:47. doi.org/10.1186/s12284-020-00410-7.
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Kongchum, M., D.L. Harrell, M. Barron, N. Adotey, and J. Li. 2020. Methane and nitrous oxide emissions from Louisiana rice fields under three water management practices. J. Rice Res. Dev. 3(1):74-81. Doi:10.36959/973/423.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. Poor growing conditions were prevalent in the 2019 Louisiana rice season. H. Rouse Caffey Rice Research Station News. 16(4):6.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. Baiting and hunting of migratory birds over rice fields. H. Rouse Caffey Rice Research Station News. 17(4):1-2.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. Is the single preflood nitrogen application the most efficient? H. Rouse Caffey Rice Research Station News. 17(2)2-3.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. Starter nitrogen fertilizer applications in rice. H. Rouse Caffey Rice Research Station News. 17(1)4.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. March 25 edition. Louisiana Rice Notes. 2020(1)1-7.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. May 22 edition. Louisiana Rice Notes. 2020(2)1-7.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. and D. Groth. May 29 edition. Louisiana Rice Notes. 2020(3)1-5.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. July 17 edition. Louisiana Rice Notes: Yield Report. 2020(4)1-2.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. July 23 edition. Louisiana Rice Notes: Yield Report. 2020(5)1-3.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. July 31 edition. Louisiana Rice Notes: Yield Report. 2020(6)1-3.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. August 7 edition. Louisiana Rice Notes: Yield Report. 2020(7)1-3.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. August 14 edition. Louisiana Rice Notes: Yield Report. 2020(8)1-5.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. August 24 edition. Louisiana Rice Notes: Yield Report. 2020(9)1-4.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2019. Poor conditions prevailed during 2019 season. Rice Farming. 54(1):27-28.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. Diversify cultivar selections to spread the risk. Rice Farming. 54(2):18-19.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. Dont guess. Soil test! Rice Farming. 54(3):24.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. IDing seedling weeds is critical to early season weed control. Rice Farming. 54(4)18.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. Maintaining a flood for 3 weeks after pre-flood N is key. Rice Farming. 54(5)21-22.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, D.L. 2020. If you had smut in 2019, plan to protect crops this season. Rice Farming. 54(6)20-21.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Adotey, N., A. Coker, M. Kongchum, and D.L. Harrell. 2019. Evaluation of pretreated N fertilizer with urease and nitrification inhibitor on ammonia volatilization. ASA-CSSA-SSSA Meeting. 4-7 Nov., 2019. San Antonio, TX.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Kongchum, M., N. Adotey, D.L. Harrell, and A. Coker. 2019. Evaluation of nitrogen fertilizer efficiency under three water management practices using 15N Isotope technique. ASA-CSSA-SSSA Meeting. 4-7 Nov., 2019. San Antonio, TX.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Coker, A., Adotey, N., Gentimis, T., Harrell, D.L., Kongchum, M., Shiratsuchi, L., Tubana, B. 2019. Comparison of unmanned aerial system (UAS) and active crop canopy sensor derived vegetative indices to estimate rice grain yield. ASA-CSSA-SSSA Meeting. 4-7 Nov., 2019. San Antonio, TX.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Coker, A., D.L. Harrell, and M. Kongchum. 2020. Modeling rice grain yield response to nitrogen fertilization. 38th Rice Technical Working Group. Feb. 24-27, 2020. Orange Beach, AL.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Kongchum, M., D.L. Harrell, and A. Coker. 2020. Application of 15N Isotope technique to evaluate nitrogen use efficiency from different water management practices. 38th Rice Technical Working Group. Feb. 24-27, 2020. Orange Beach, AL.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Coker, A., N. Adotey, T. Gentimis, D.L. Harrell, M. Kongchum, L. Shiratsuchi, and B. Tubana. 2020. Evaluation of the linear relationship between GreenSeeker and UAS derived Normalized Difference Vegetation Index (NDVI) to rice grain yield. 38th Rice Technical Working Group. Feb. 24-27, 2020. Orange Beach, AL.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Harrell, D.L., M. Kongchum, and A. Coker. 2020. Evaluation of N fertilization in furrow irrigated rice. 38th Rice Technical Working Group. Feb. 24-27, 2020. Orange Beach, AL.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Coker, A., N. Adotey, T. Gentimis, D.L. Harrell, M. Kongchum, M. Shiratsuchi, and B. Tubana. 2020. Comparison of unmanned aerial system and active crop canopy sensors vegetative index to estimate rice grain yield potential. 7th International Temperate Rice Conference. Feb. 9-12, 2020. Pelotas, Brazil. p. 18.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Harrell, D.L., M. Kongchum, and A. Coker. 2020. Evaluation of nitrogen management in furrow irrigated rice. 7th International Temperate Rice Conference. Feb. 9-12, 2020. Pelotas, Brazil. p. 16.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Kongchum, M, D.L. Harrell, and A. Coker. 2020. Comparison of delayed flood and furrow irrigated drill-seeded rice in south Louisiana. 7th International Temperate Rice Conference. Feb. 9-12, 2020. Pelotas, Brazil. p. 243.
  • Type: Other Status: Published Year Published: 2020 Citation: Price. R. and D.L. Harrell. 2019, Nozzle tip and sprayer setting selections for drift reduction in the DJI AGRAS MG-1/1S sprayer drone. LSU AgCenter.
  • Type: Other Status: Published Year Published: 2020 Citation: Harrell, Dustin L., Donald E. Groth, Eric P. Webster, James H. Oard, Jeremy P. Hebert, Keith A. Fontenot, Manoch Kongchum, Michael J. Stout, Steven D. Linscombe, Blake Wilson, Rick Zaunbrecher, Sebe Brown, and Adam Famoso. 2019. Rice Varieties and Management Tips 2020. LSU AgCenter. LAES Pub. No. 2270.
  • Type: Other Status: Published Year Published: 2020 Citation: Padgett, Guy B., Blair Buckley, Clayton A. Hollier, Dustin L. Harrell, Eric P. Webster, Gregory Williams, Thomas K. Normand, Patrick K. Bollich, Paul P. Price, III, Ronnie Levy, Josh Copes, Jeff A. Davis, John Stapp, Daniel O. Stephenson, and Caitlin deNux. 2019. 2020 Soybean Variety Yields and Production Practices. LSU AgCenter. LAES Pub. No. 2269.
  • Type: Other Status: Published Year Published: 2020 Citation: Stephen A. Harrison, Kelly Arceneaux, Blair Buckley, Fred Collins, Dustin Ezell, Jacob Fluitt, Katie Fontenot, Don Groth, Ally Harding, Dustin Harrell, Manoch Kongchum, Dana Landry, James Leonards, H.J. "Rick" Mascagni, G. Boyd Padgett, Trey Price, Myra Purvis, John Stapp, Daniel Stephenson, William Waltman, Greg Williams, and Caitlin deNux. 2020. 2020 Small Grain Performance Trials. LSU AgCenter. LAES Research Summary 222.
  • Type: Other Status: Published Year Published: 2020 Citation: D.E. Groth, A.F. Famoso, J.H. Oard, H.S. Utomo, I. Wenefrida, D.L. Harrell, M. Kongchum, J.H. Ham, B.E. Wilson, J.M. Villegas, M.M. Mulcahy, E.P. Webster, R.E. Zaunbrecher, M.A. Deliberto, K.A. Fontenot. 2019. 111th Annual Research Report, H. Rouse Caffey Rice Research Station, Louisiana Agricultural Experiment Station, LSU Agricultural Center (Published online in 2020.)


Progress 10/01/18 to 09/30/19

Outputs
Target Audience:Audiences for this project include rice, soybean, grain sorghum, and wheat producers, consultants, breeders, as well as soil fertility and agronomy professionals. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?The project generated several presentations at professional meetings. Multiple journal articles, newsletter articles, popular press articles, field day presentations, and grower meeting presentations provided information on fertilizer and agronomic recommendations to producers, crop consultants, and extension agents. How have the results been disseminated to communities of interest?The project disseminated information via presentations at professional meetings, field days, grower meetings, consultant/extension agent trainings, and grower advisory group meetings. Further dissemination was accomplished by publishing in scientific journals, newsletters, LSU AgCenter publications, and popular press magazines. What do you plan to do during the next reporting period to accomplish the goals?New rice varieties and hybrids are being developed at breeding programs throughout the U.S. and will need to be evaluated for their adaptability in north and southwest Louisiana environments. In addition, these new cultivars will also need to be evaluated for their response to N fertilization rate and time of application. New seeding rate and plant population trials will need to be conducted to generate agronomic recommendations for new rice varieties. New and currently marketed soybean, sorghum, and wheat varieties will be evaluated for their adaptability for southwest Louisiana. New composite and enhanced efficiency N fertilizers are being developed and marketed every year and need to be evaluated for their effectiveness in a rice production management system. Fertilizer P and K rate, source, and time of application will be evaluated at multiple locations. The response of ratoon rice to N and stubble management will be evaluated. Variety by N rate and application timing experiments will be conducted at various locations across the state. The use of UAV technology to determine mid-season N rates and the evaluation of enhanced efficiency fertilizers will be evaluated at multiple locations. Ratoon and main crop responses to different nutrients, application rates and timings, and stubble management will be continued in 2020.

Impacts
What was accomplished under these goals? Improved agronomic, fertility, and cultural management recommendations based on sound research for rice and rice rotational crops have been developed as a result of this project. Seven recently released rice varieties (CLJ01, PVL02, Titan, CLL15, CLM04, CL153, and CL172), four experimental lines (2195, 4197, CLL2097, and 2140), and four rice hybrids (RT7301, RT3201, FullPage RT7321, and FullPage RT7521) were evaluated for their response to nitrogen (N) application rate and time of application at the H. Rouse Caffey Rice Research Station (HRCRRS) and cooperator locations in Calcasieu (CP), Tensas (TP), St. Landry (SLP), and Richland (RP) parishes. Multiple trials were conducted at the HRCRRS to evaluate the optimal N rate and method of application for rice varieties and hybrids when grown using furrow irrigation. A trial was conducted to evaluate the volatilization and rice yield potential when three N sources (urea, AgrotainUltra-treated urea, and Anvol-treated urea) were applied at three different application timings. Research in 2019 utilizing a RedEdge-M camera mounted on a UAV and a hand-held GreenSeeker was conducted at five locations across the state on several rice variety and hybrid N rate trials. Multiple trials were conducted to evaluate the seeding rate in a drill-seeded, delayed flood rice production system for the Clearfield and Provisia lines. Soybean, grain sorghum, and wheat varieties were evaluated in variety trials, and results were published.

Publications

  • Type: Other Status: Other Year Published: 2019 Citation: Stephen A. Harrison, Kelly Arceneaux, Blair Buckley, Justin Eads, Jacob Fluitt, Don Groth, Dustin Harrell, Manoch Kongchum, James Leonards, Ally Lunos, H.J. "Rick" Mascagni, Katie McCarthy Fontenot, G. Boyd Padgett, Trey Price, Myra Purvis, John Stapp, Daniel Stephenson, William Waltman, Paul Washam, Greg Williams, and Caitlin Woodard. 2018 Small Grain Performance Trials. 2019. LAES Research Summary 216.
  • Type: Journal Articles Status: Published Year Published: 2019 Citation: Famoso, A.N., Harrell, D.L., Groth, D.E., Webster, E.P., Oard, J.H., Zaunbrecher, R.E., Bearb, K.F., Conner, C.A, Guidry, G.J., Angira, B.A., and Linscombe, S.D. 2019. Registration of ⿿PVL01⿿ Rice. The Journal of Plant Registrations doi:10.3198/jpr2019.01.0002crc.
  • Type: Journal Articles Status: Published Year Published: 2019 Citation: Famoso, A.N., Harrell, D.L., Groth, D.E., Kongchum, M., Wenefrida, I., Oard, J.H., Zaunbrecher, R.E., Bearb, K.F., Conner, C.A., Guidry, G.J., Angira, B.A., Sha, X., and Linscombe, S.D. 2019. Registration of ⿿CLJ01⿿ Rice. The Journal of Plant Registrations doi:10.3198/jpr2018.06.0035crc
  • Type: Journal Articles Status: Published Year Published: 2019 Citation: Baisakh, N., Famoso, A., Yabes, J., Tabien, R., and Harrell, D. 2019. Developing Rice Varieties Suitable for Alternative Irrigation Regimes in Louisiana. Louisiana Agriculture. Winter 2019, Vol. 62, no. 1.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. The 2018 season in Louisiana. H. Rouse Caffey Rice Research Station News. 16(1):4.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. Poor growing conditions were prevalent in the 2019 Louisiana rice season. H. Rouse Caffey Rice Research Station News. 16(4):6.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. 5 April edition. Louisiana Rice Notes. 2019(1):1-5.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. 29 April edition. Louisiana Rice Notes. 2019(2):1-7.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. 6 May edition. Louisiana Rice Notes. 2019(3):1-6.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L., and D. Groth. 2019. 15 May edition. Louisiana Rice Notes. 2019(4):1-3.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. 5 June edition. Louisiana Rice Notes. 2019(5):1-4.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. 16 September edition. Louisiana Rice Notes. 2019(6):1-4.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. 12 September edition. Louisiana Rice Notes: Yield Report. 2019(7):1-3.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2018. Growers achieve near-record yields despite challenges. Rice Farming. 53(1):28.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. Growers have new tools in their toolbox for 2019. Rice Farming. 53(2):18-19.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. Lessons learned: Researchers fine-tuned N, seeding rate recommendations for Provisia rice during the 2018 season. Rice Farming. 53(3):12.
  • Type: Other Status: Published Year Published: 20119 Citation: Harrell, D.L. 2019. Starter nitrogen applications offer agronomic advantages. Rice Farming. 53(4):22.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. Rethinking N management in furrow-irrigated rice. Rice Farming. 53(5):21.
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, D.L. 2019. Post-harvest stubble management helps boost ratoon yields. Rice Farming. 53(6):20-21.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Harrell, DL., M. Kongchum, A. Coker, N. Adotey, and G. Schwab. 2019. Current nitrogen management research in Louisiana. 22nd Annual Conservation Systems Cotton and Rice Conference, Jan 30-Feb 1, 2019. Baton Rouge, LA
  • Type: Other Status: Published Year Published: 2019 Citation: Groth, D.E., A.F. Famoso, J.H. Oard, H.S. Utomo, I. Wenefrida, D.L. Harrell, M. Kongchum, N. Adotey, J.H. Ham, B.E. Wilson, L. Bernaola, J.M. Villegas, M.M. Mulcahy, E.P. Webster, R.E. Zaunbrecher, M.A. Deliberto, and K.A. Fontenot. 2019. 110th Annual Research Report, H. Rouse Caffey Rice Research Station, Louisiana Agricultural Experiment Station, LSU Agricultural Center. (Published online in 2019).
  • Type: Other Status: Published Year Published: 2019 Citation: Harrell, Dustin L., Groth, Donald E., Webster, Eric P., Oard, James H., Hebert, Jeremy P., Fontenot, Keith A., Kongchum, Manoch, Stout, Michael J., Linscombe, Steven D., Wilson, Blake, Zaunbrecher, Rick, Brown, Sebe, and Famoso, Adam. 2019. "Rice Varieties and Management Tips 2020".
  • Type: Other Status: Published Year Published: 2019 Citation: Fromme, D., H.J. Mascagni, B. Buckley, J. Copes, D. Harrell, B. Padgett, T. Price, and S. Harrison. 2019. Louisiana Grain Sorghum Hybrid Trials. LSU AgCenter. LAES Research Summary No. 218.


Progress 10/01/17 to 09/30/18

Outputs
Target Audience:Audiences for this project include rice, soybean, grain sorghum, and wheat producers, consultants, breeders, as well as soil fertility and agronomy professionals. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?The project generated several presentations at professional meetings. Multiple journal articles, newsletter articles, popular press articles, field day presentations, and grower meeting presentations provided information on fertilizer and agronomic recommendations to producers, crop consultants, and extension agents. How have the results been disseminated to communities of interest?The project disseminated information via presentations at professional meetings, field days, grower meetings, consultant/extension agent trainings, and grower advisory group meetings. Further dissemination was accomplished by publishing in scientific journals, newsletters, LSU AgCenter publications, and popular press magazines. What do you plan to do during the next reporting period to accomplish the goals?New rice varieties and hybrids are being developed at breeding programs throughout the U.S. and will need to be evaluated for their adaptability in north and southwest Louisiana environments and also need to be evaluated for their response to N fertilization rate and time of application. New rice varieties seeding rate and plant population trials will need to be conducted to generate agronomic recommendations. New and currently marketed soybean, sorghum, and wheat varieties will be evaluated for their adaptability for southwest Louisiana. New composite and enhanced efficiency N fertilizers are being developed and marketed every year and need to be evaluated for their effectiveness in a rice production management system. Fertilizer P, K, and zinc rate, source, and time of application will be evaluated at multiple locations. Ratoon rice response to N and stubble management will be evaluated.

Impacts
What was accomplished under these goals? Improved agronomic, fertility, and cultural management recommendations based on sound research for rice and rice rotational crops have been developed as a result of this project. Six recently released rice varieties (CLJ01, PVL01, Diamond, Titan, CL153, and CL172), 4 experimental lines (PVL108, CLX6-1111, CLX6-1133, and CLX6-1030), and 6 rice hybrids (XP113, XP760, Gemini 214CL, FullPage RT7321, FullPage RT7323, and CLXL745) were evaluated for their response to nitrogen (N) application rate and time of application at the H. Rouse Caffey Rice Research Station (RRS) and cooperator locations in Vermilion (VP), Calcasieu (CP), Tensas (TP), St. Landry (SLP), and Richland (RP) parishes. Multiple trials were conducted at the RRS to evaluate the optimal N rate and method of application for rice varieties and hybrids when grown using furrow irrigation. A trial was conducted to evaluate the volatilization and rice yield potential when three N sources (urea, AgrotainUltra-treated urea, and Anvol-treated urea) were applied at three different application timings. Research in 2018 utilizing a RedEdge-M camera mounted on a UAV and a hand held GreenSeeker was conducted at 6 locations across the state on several rice variety and hybrids N rate trials. Multiple trials were conducted to evaluate the seeding rate in a drill-seeded, delayed flood rice production system for the Clearfield and Provisia lines. Soybean, grain sorghum, and wheat varieties were evaluated in variety trials and results were published.

Publications

  • Type: Journal Articles Status: Published Year Published: 2018 Citation: Atwill, R.L., L.J. Krutz, J.A. Bond, K.R. Reddy, J. Gore, T.W. Walker, and D.L. Harrell. 2018. Water management strategies and their effects on rice grain yield and nitrogen use efficiency. J. Soil and Water Conservation. 73(3):257-264. doi:10.2489/73.3.257
  • Type: Journal Articles Status: Published Year Published: 2018 Citation: Linquist, B.A., M. Marcos, M.A. Adviento-Borbe, M. Anders, D.L. Harrell, S. Linscombe, M.L. Reba, B.R.K. Runkle, L. Tarpley, and A. Thomson. 2018. Greenhouse Gas Emissions and Management Practices that Affect Emissions in US Rice Systems. J. Environ Qual. doi:10.2134/jeq2017.11.0445
  • Type: Journal Articles Status: Published Year Published: 2018 Citation: Adotey N., M. Kongchum, J. Li, G.B. Whitehurst, E. Sucre, and D.L. Harrell. 2018. Rice Response and Ammonia Volatilization from Experimental Zinc Sulfate-Coated Ureas Containing Urease Inhibitors. Journal of Experimental Agriculture International. doi: 10.9734/JEAI/2018/39214ournal
  • Type: Journal Articles Status: Published Year Published: 2018 Citation: Adotey, N., D.L. Harrell, and W.P. Weatherford. 2018. Characterization and Liming Effect of Wood Ash Generated from a Biomass-Fueled Commercial Power Plant. Communications in Soil Science and Plant Analysis. 49:1, 38-49. doi: 10.1080/00103624.2017.1421643
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. Nitrogen best management practices promotes sustainability of Louisiana rice production. H. Rouse Caffey Rice Research Station News. 15(2):4.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. Sulfur Fertilization for rice production H. Rouse Caffey Rice Research Station News. 15(1):1.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. 15 March edition. Louisiana Rice Notes. 2018(1):1-5.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. 5 April edition. Louisiana Rice Notes. 2018(2):1-4.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. and D. Groth. 2018. 20 April edition. Louisiana Rice Notes. 2018(3):1-8.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. and M. Deliberto. 2018. 29 May edition. Louisiana Rice Notes. 2018(4):1-7.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. 23 July edition. Louisiana Rice Notes. 2018(5):1-3.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 27 July edition. Louisiana Rice Notes. 2018(6):1-7.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 29 July edition: Louisiana Rice Yield Report #1. Louisiana Rice Notes. 2018(7):1.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2 August edition: Louisiana Rice Yield Report #2. Louisiana Rice Notes. 2018(8):1.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 9 August edition: Louisiana Rice Yield Report #3. Louisiana Rice Notes. 2018(9):1-3.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 16 August edition: Louisiana Rice Yield Report #4. Louisiana Rice Notes. 2018(10):1-3.
  • Type: Other Status: Awaiting Publication Year Published: 2018 Citation: Harrell, D.L. 2018. The 2018 rice season in Louisiana. Rice Farming. (in press).
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. Dustin Harrell answers N management questions. Rice Farming. 52(6):20.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. LSU AgCenter begins row rice trials. Rice Farming. 52(5):21.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. Floods aid expansion: Giant invasive snail threatens the rice-crawfish rotation in southwest Louisiana. Rice Farming. 52(4):14-15.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. Top 10 things to know about Provisia rice. Rice Farming. 52(3):23-24.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2018. Rice varieties and hybrids to consider for 2018. Rice Farming. 52(2):20.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L. 2017. A host of challenges. Rice Farming. 52(1):8-9.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Famoso, A., C. Addison, B. Angira, K. Bearb, T. Cerioli, C. Conner, G. Guidry, D. Groth, D. Harrell, M. Kongchum, S. Linscombe, J. Oard, H. Utomo, B. Williams, and I. Wenefrida. 2018. Rice Variety Development in Louisiana: Objectives, Technologies, and Resource Allocation. Proc. Rice Tech. Wrkg. Grp. 37:68.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Adotey, N., D. Harrell, M. Kongchum, J. Leonards, J. Fluitt, and J. Hartman. 2018. Evaluation of flood timing an rice agronomics in drill-seeded delayed flood rice production system. Proc. Rice Tech. Wrkg. Grp. 37: 139.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Kongchum, M., D. Harrell, and N. Adotey. 2018. Evaluation of Water Management Practices in a Drill Seeded Rice Production System on NUE, Water Use Efficiency, and Grain Yield. Proc. Rice Tech. Wrkg. Grp. 37: 137
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Harrell, D.L., G. Schwab, M. Kongchum, and N. Adotey. 2018. Evaluations of an experimental urease inhibitor on ammonia volatility, NUE and rice yield. Proc. Rice Tech. Wrkg. Grp. 37: 129.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Adotey, N., D.L. Harrell, M. Kongchum, A. Coker, J. Leonards, J. Fluitt, and J. Hartman. 2018. Evaluation of flood timing on grain yield in a drill-seeded, delayed flood rice production system. Annual Rice Field Day. June 28, 2018. (poster)
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Harrell, D.L., M. Kongchum, and N. Adotey. 2018. Effect of water management and silica slag application on the arsenic content of rice. Proc. Rice Tech. Wrkg. Grp. 37: 164.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Coker, A., N. Adotey, D.L. Harrell, G. Hensgens, and M. Kongchum. 2018. Comparison of UAV and GreenSeeker NDVI vegetative indices to estimate rice grain yield potential. Rice Tech. Wrkg. Grp. 37: 147.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Kongchum, M. S. Linscombe, D.L. Harrell, N. Adotey. 2018. Comparison of 2-Acetyl-1-Pyrroline (2-AP) in rice at different growth stages. 5th International Rice Congress 2018. 15-17 October, 2018. Singapore, Singapore.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Harrell, D.L., G. Schwab, M. Kongchum, and N. Adotey. 2018. Evaluations of Duromide, a new Urease Inhibitor on Ammonia Volatility, NUE and Rice Yield. 5th International Rice Congress 2018. 15-17 October, 2018. Singapore, Singapore.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Adotey, N., D.L. Harrell, M. Kongchum and A. Coker. Evaluation of flood timing on rice agronomics in a drill-seeded delayed flood rice production system. 2018 ASA and CSSA Meeting. 4-7 November, 2018. Baltimore, MD.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Coker, A., N. Adotey, T. Gentimis, D.L. Harrell, G. Henskins, M. Kongchum, L. Shiratsuchi, and B. Tubana. 2018. Comparison of UAV and Greenseeker NDVI vegetative indices to estimate rice grain yield potential. 2018 ASA and CSSA Meeting. 4-7 November, 2018. Baltimore, MD.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D.L., M. Kongchum, J.P. Leonards, J.S. Fluitt, and J.R. Hartman. 2018. Rice Agronomy. 109th Annual Research Report H. Rouse Caffey Rice Research Station. p. 111-315.
  • Type: Other Status: Published Year Published: 2018 Citation: Harrell, D., S. Brown, A. Famoso, K. Fontenot, D. Groth, J. Hebert, M. Kongchum, J. Oard, B. Wilson, E. Webster, and R. Zaunbrecher. 2018. 2018 Rice Varieties and Management Tips. Pub. 2270.
  • Type: Other Status: Published Year Published: 2018 Citation: Stephen Harrison, Leonards, James P., Price, III, Paul P., Purvis, Myra, Padgett, Guy B., Waltman, William F., Stapp, John, Woodard, Caitlin, Stephenson, Daniel O., Arceneaux, Kelly J., Fluitt, Jacob, Mascagni, Jr., Henry J., Washam, Paul, Harrell, Dustin L., Groth, Donald E., Kongchum, Manoch 2018. 2018 Small Grain Performance Trials. LAES Research Summary No. 212.
  • Type: Other Status: Awaiting Publication Year Published: 2018 Citation: Spivey, T., J. Davis, C. Hollier, C. Woodard, D.O. Stephenson, P.K. Bollich, T. Normand, B. Buckley, P. Price, E.P. Webster, M. Purvis, G.B. Padgett, D.L. Harrell, M. Kongchum. 2018. 2018 Soybean variety yields and production practices. Pub. 2269. LSU AgCenter. Baton Rouge, LA. (in press)
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Thomson, A.M, Linquist, B., Marcos, M., Adviento-Borbe, A., Anders, M., Buttner, P., Freemyer, T., Harrell, D., Linscombe, S., Ottis, B., Parkhurst, R., Ramsey, S., Reba, M., Runkle, B., Snyder, C., and Tarpley, L. 2018. Decision Support Tool for Evaluating Methane Emissions Reduction Opportunities from Rice Production. Proc. Rice Tech. Wrkg. Grp. 37:44-45.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Linquist, B., Marcos, M., Anders, M., Harrell, D., Linscombe, S., Reba, M., Runkle, B., and Tarpley, L. 2018. Greenhouse Gas Emissions and Management Practices that Impact Them in U.S. Rice Systems. Proc. Rice Tech. Wrkg. Grp. 37:45-46.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Dodla, S., Adotey, N., Meng, Y., Harrell, D., Kongchum, M., and Wang, J.J. 2018. N-Stabilizers and Temperature Effect on NH3 Volatilization and N2O Emissions from Poultry Litter. Proc. Rice Tech. Wrkg. Grp. 37:130-132.


Progress 11/14/16 to 09/30/17

Outputs
Target Audience:Audiences for this project include rice, soybean, grain sorghum, and wheat producers, consultants, breeders, as well as soil fertility,agronomy professionals and the Louisiana rice industry. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?The project generated several presentations at professional meetings. Multiple journal articles, newsletter articles, popular press articles, field day presentations, and grower meeting presentations provided information on fertilizer and agronomic recommendations to producers, crop consultants, and extension agents. How have the results been disseminated to communities of interest?The project disseminated information via presentations at professional meetings, field days, grower meetings, consultant/extension agent trainings, and grower advisory group meetings. Further dissemination was accomplished by publishing in scientific journals, newsletters, LSU AgCenter publications, and popular press magazines. What do you plan to do during the next reporting period to accomplish the goals?New rice varieties and hybrids are being developed at breeding programs throughout the U.S. and will need to be evaluated for their adaptability in north and southwest Louisiana environments and also will need to be evaluated for their response to N fertilization rate and time of application.New rice varieties seeding rate and plant population trials will need to be conducted to generate agronomic recommendations. New and currently marketed soybean, sorghum, and wheat varieties will be evaluated for their adaptability for southwest Louisiana.New composite and enhanced efficiency N fertilizers are being developed and marketed every year and need to be evaluated for their effectiveness in a rice production management system. Fertilizer P, K, and zinc rate, source, and time of application will be evaluated at multiple locations. Ratoon rice response to N and stubble management will be evaluated.

Impacts
What was accomplished under these goals? Improved agronomic, fertility, and cultural management recommendations based on sound research for rice and rice rotational crops have been developed as a result of this project. Eight recently released rice varieties (Titan, Thad, CL153, CL272, Diamond, PVL01, Arua115, and CL172) and two rice hybrids (XL760 and Gemini 214CL) were evaluated for their response to nitrogen (N) application rate and time of application at the H. Rouse Caffey Rice Research Station (RRS) and cooperator locations in Vermilion (VP), Franklin (FP), St. Landry (SLP), and Richland (RP) parishes. Multiple trials were conducted to evaluate the seeding rate in a drill-seeded, delayed flood rice production system for the Clearfield and Provisia lines. Several enhanced efficiency N fertilizers were evaluated for their volatility control and recommendations were generated. Phosphorus (P) and potassium (K) fertilizer timing, sources, and application rates were evaluated in rice main and ratoon crops. Ratoon rice stubble management practices were evaluated. Soybean, grain sorghum, and wheat varieties were evaluated in variety trials and results were published.

Publications

  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L., S. Brown, A. Famoso, K. Fontenot, D. Groth, J. Hebert, M. Kongchum, S. Linscombe, J. Oard, M. Stout, E. Webster, and R. Zaunbrecher. 2017. Rice Varieties and Management Tips 2017. LSU AgCenter Publication No. 2270. Baton Rouge, LA.
  • Type: Other Status: Published Year Published: 2017 Citation: Levy, R., J. Davis, C. Hollier, C. Woodard, D.O. Stephenson, P.K. Bollich, T. Normand, B. Buckley, P. Price, E.P. Webster, M. Purvis, G.B. Padgett, D.L. Harrell, M. Kongchum. 2017. 2017 Soybean variety yields and production practices. Pub. 2269. LSU AgCenter. Baton Rouge, LA.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrison, S.A., K.J. Arceneaux, B. Buckley, J. Eads, J. Fluitt, D.E. Groth, D.L. Harrell, M. Kongchum, J.P. Leonards, A, Lunos, H.J. Mascagni, Jr., K. McCarthy, G.B. Padgett, P. Price, M. Purvis, J. Stapp, D. Stephenson, W. Waltman, P. Washam, G. Williams and K. Woodward. 2017. 2017 Small Grain Performance Trials. LAES Research Summary No. 212.
  • Type: Journal Articles Status: Published Year Published: 2017 Citation: Adotey, N., M. Kongchum, G.B. Whitehurst, E. Sucre, J. Li and D.L. Harrell. 2017. Ammonia volatilization of zinc sulfate coated and NBPT treated urea fertilizers. Agronomy Journal. doi: 10.2134/agronj2017.03.0153.
  • Type: Journal Articles Status: Accepted Year Published: 2017 Citation: Adotey, N., D.L. Harrell and W. Weatherford. 2017. Characterization and liming effect of wood ash generated from a biomass-fueled commercial power plant. Communications in Soil Science and Plant Analysis (accepted).
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. and D. Groth. 2017. 26 July edition. Louisiana Rice Notes. 2017(9):1-5.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. 19 June edition. Louisiana Rice Notes. 2017(8):1-8.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. 7 June edition. Louisiana Rice Notes. 2017(7):1-6.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L., D. Groth, and B. Wilson. 2 June edition. Louisiana Rice Notes. 2017(6):1-7.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. and D. Groth. 2017. 19 May edition. Louisiana Rice Notes. 2017(5):1-7.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. 4 May edition. Louisiana Rice Notes. 2017(4):1-6.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. and D. Groth. 2017. 30 March edition. Louisiana Rice Notes. 2017(3):1-8.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L., M. Deliberto, M. Stout, B. Wilson, and A. Wilson. 2017. 22 March edition. Louisiana Rice Notes. 2017(2):1-11.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. 23 February edition. Louisiana Rice Notes. 2017(1):1-5.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. and S. Linscombe. 2017. Bird repellents for seeded and headed rice. H. Rouse Caffey Rice Research Station News. 14(1):3.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. Maximizing yield potential in the ratoon crop. H. Rouse Caffey Rice Research Station News. 14(2):1.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. The use of UAVs to determine mid-season N. H. Rouse Caffey Rice Research Station News. 14(3):7.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. What you need to know if you plan to plant the new Provisia rice variety PVL01. H. Rouse Caffey Rice Research Station News. 14(4):7.
  • Type: Other Status: Awaiting Publication Year Published: 2017 Citation: Harrell, D.L. 2017. The 2017 rice season was anything but normal in Louisiana. (in press).
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. Fungicide timing critical for smut management. Rice Farming. 51(5):19.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. Pre-flood nitrogen should always be applied on dry soil. Rice Farming. 51(4):18.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. Sulfur and zinc fertilizer sources are important. Rice Farming. 51(3):20.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. Maximize fertilizer efficiency with these rules. Rice Farming. 51(2):25.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L. 2017. Rice varieties, hybrids to mull for Louisiana in 2017. Rice Farming. 51(1):19.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Adotey N., M. Kongchum, G. B. Whitehurst, E. Sucre, J. Li, and D. L. Harrell. Zinc sulfate coated urea fertilizer as a potential zinc source in drill-seeded, delayed flood rice production. ASA-CSSA-SSSA International Annual Meeting, Tampa, LA, Oct. 22-25, 2017.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Adotey, N., M. Kongchum, G. Schwab, J. Li, J. Leonards, J. Fluitt, and D. L. Harrell. Ammonia volatilization from surface applied urea and NBPT-treated urea at different soil moisture conditions. 15th Annual Nitrogen Use Efficiency Conference, Baton Rouge, LA, Aug. 7-9, 2017.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Adotey, N., M. Kongchum, G. Schwab, J. Li, J. Leonards, J. Fluitt, and D. L. Harrell. Effect of soil moisture on the efficiency of pre-flood urea and NBPT-treated urea applications in rice. H. Rouse Caffey Rice Research Station Field Day, Rayne, LA, June 28, 2017.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Kongchum, M., D.L. Harrell, and N. Adotey. Effect of flood timing on rice grain yield in a drill-seeded, delayed flood rice production system. ASA-CSSA-SSSA International Annual Meeting, Tampa, LA, Oct. 22-25, 2017.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Harrell, D.L., G. Schwab, M. Kongchum, and N. Adotey. Effect of soil moisture on the efficiency of pre-flood N applications in rice. ASA-CSSA-SSSA International Annual Meeting, Tampa, LA, Oct. 22-25, 2017.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Harrell, D.L., M. Kongchum, and N. Adotey. The effect of soil moisture on efficiency of pre-flood nitrogen applications in rice. International Temperate Rice Conference. 6-9 March 2017. Griffith, Australia.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Kongchum, M., D. Harrell, and S. Linscombe. 2017. Effect of Water Management Practices on N Uptake, N Use Efficiency, and Grain Yield of Rice Grown in South Louisiana. International Temperate Rice Conference, Griffith, New South Wales, Australia, March 6-9, 2017.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Harrell, D.L., M. Kongchum, and N. Adotey. Effect of soil moisture on efficiency of pre-flood nitrogen applications in rice. 15th Annual Nitrogen Use Efficiency Conference, Baton Rouge, LA, Aug. 7-9, 2017.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Harrell, D.L. Nitrogen and seeding rate evaluations of newly released rice varieties. 20th Annual National Conservation Systems Cotton and Rice Conference. 30-31 Feb. 2017. Baton Rouge, LA.
  • Type: Other Status: Published Year Published: 2017 Citation: Harrell, D.L., M. Kongchum, J.P. Leonards, J.S. Fluitt, and J.R. Hartman. 2017. Rice Agronomy. In 108th Annual Research Report, H. Rouse Caffey Rice Research Station. La. Agri. Exp. Stn., LSU AgCenter, 108:97-262.