Source: TENNESSEE STATE UNIVERSITY submitted to
PROMOTING PIGEON PEA (CAJANUS CAJAN L. MILLSP) PRODUCTION FOR LIMITED RESOURCE FARMERS OF TENNESSEE AS A FOOD, FORAGE AND SOIL IMPROVING COVER CROP.
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
COMPLETE
Funding Source
Reporting Frequency
Annual
Accession No.
1000321
Grant No.
(N/A)
Cumulative Award Amt.
(N/A)
Proposal No.
(N/A)
Multistate No.
(N/A)
Project Start Date
Oct 1, 2013
Project End Date
Aug 31, 2015
Grant Year
(N/A)
Program Code
[(N/A)]- (N/A)
Recipient Organization
TENNESSEE STATE UNIVERSITY
3500 JOHN A. MERRITT BLVD
NASHVILLE,TN 37209
Performing Department
Agricultural and Environmental Sciences
Non Technical Summary
Pigeon pea (Cajanus cajan L. Millsp) is a multipurpose crop. Its potential as an alternative crop for small farmers in Tennessee. Itssuitability for growth underTennessee climatic conditions and its use for food, feed, and fuel have not been extensively studied. The overall goal of this study is to investigate pigeon pea potential as: (1) a summer annual legume as asoil improving cover crop; (2) a source of summer forage; and (3) a nitrogen-fixer. The proposed research will evaluate the agronomic feasibility of growing pigeon pea as a niche crop on small farms in Tennessee. A three-year field study will be conducted at the TSU Nashville Agricultural Research and Extension Center (AREC) to evaluate the effects of selected agronomic management factors on pigeon pea biomass and root growth, on the resultant soil physical and chemical properties, and on its grain yield potential. Effects of row spacing, summer cover crop, and intercropping with corn (Zea mays) as a companion crop on the field performance and yield of two selected pigeon pea cultivarswill be evaluated annually for three years. Experiment design will be a split-plot statistical design with three replications. Soil quality parameters to be annually evaluated as a function of time will be: soil bulk density, soil aggregate stability, organic matter, pH, water holding capacity, and infiltration. The CO2 emissions will be measured, and water use efficiency (WUE) will be calculated. Pigeon pea crop performance will be monitored throughout the season; leaf area index (LAI) and transpiration rates will be determined. Grain and biomass (root and stalk) yields will be obtained. Stalks will be chemically analyzed for TDN, crude fiber and protein and other forage quality parameters as a function of time. Student experiential research learning and outreach efforts will be made involving both graduate and undergraduate students in the conduct of research.
Animal Health Component
100%
Research Effort Categories
Basic
0%
Applied
100%
Developmental
0%
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
10214121060100%
Goals / Objectives
The overall goal of this study is to investigate pigeon pea potential as: (1) a summer annual legume as a soil improving cover crop; (2) a source of summer forage; and (3) a nitrogen-fixer. The proposed research will evaluate the agronomic feasibility of growing pigeon pea as a niche crop forsmall-holder agriculturein Tennessee. A three-year field study will be conducted at the TSU Nashville Agriculture Research and Extension Center (AREC) to evaluate the effects of selected agronomic management factorson soil physical and chemical properties, on pigeon pea biomass and root growth, and on its grain yield and stalk biomass potential.
Project Methods
Field Experimental Plan Location: This field plot study will be conducted on the TSU AREC - Nashville site (86010′31.55′′ N; 860 49′37.96′′ W; 178.8m) on a Byler silt loam soil (fine, mixed, thermic fragic hapludult). This soil is a shallow, clay loam soil with low to medium K levels and low water holding capacity. Cultivar selection: Two promising pigeon pea varieties --- GA1 and W3 -- have been selected with the help of Dr. Sharad Phatak of the University of Georgia (now retired). Field plot layout: A field plot has been identified at TSU Nashville AREC. The plot is located on a uniform land area of ~3 %, and has not been tilled for about 15 years. Present soil cover consists of primarily red fescue (F. rubra) and no more than 5-10% sedge (Cyperaceae family) grasses. Lime applications will be made based on the soil pH analyses and lime index of the soil. Fertilizer recommendations will be based on soil test as well. No nitrogen applications will be made. Before start of the experiment, soil samples will be randomly collected from 0-6" depth and analysed for physical and chemical characteristics of soil. Glyphosate (N-(phosphonomethyl) glycine) will be used as a non-selective herbicide in no-tillage. Conventional tillage will consist of plow and two diskings. Plot size will be 16'x30'. Two selected cultivars - GA1 and W3 -- will be planted each year in a split plot experimental design with three replications. Two varieties of pigeon pea will constitute the 'main plot." Spacing and intercropping with corn crop will comprise the "subplot" and "sub-subplots", respectively. Crop Management Practices Six rows of sweet corn (variety to be decided) will be planted in 36" rows in each plot at the beginning of June of each year. Crop will be appropriately fertilized. When the corn plants are about 8-10" tall, the intercropping treatment plots will be seeded with their respective pigeon pea varieties in 15" or 30" row spacing, as per the spacing treatments. P and K will be applied at the time of sowing according to the soil test recommendations. Standard agronomic practices will be followed as needed through the growth period. Insect/disease and weed control measures will be taken appropriately. Measurements Pigeon pea (PP) treatment effects will be assessed by measuring soil quality, forage quality and stem/grain yields as follows. Soil quality parameters Soil BD will be measured by removing 3" soil cores at 3" and 6" below the soil surface from each plot in October of each year of study. An A-145 Soil Core Sampler (Atkinson, McCarty and Bridges 2012) will be used. Infiltration will be measured in October of each year using a double ring inflitrometer. Soil organic C will be determined by Walkley Black oxidation method; total N by Kjeldahl procedure, and available P by Olsen extraction method. Potassium will be determined by flame photometry. Leaf area index (LAI) and canopy cover (CC) LAI measurements will be periodically made using plant canopy analyzer (LAI 2000, LiCor Inc). Digital photography has been successfully used to estimate CC (Nielsen, Micali-Garcia and Lyon 2012). This photographic techniques will be used to estimate PP canopy cover at various times during the growing season. Root/Stem biomass and nodulation Root density will be measured by removing three 1" soil cores in each plot to a depth of 6". Roots will be oven-dried and weighed. Nodulation will be determined on five randomly selected plants from the central rows of each plant at flowering. Roots will be washed, counted and dried weights determined. Forage quality PP stems collected at various times during the season will be chemically analyzed for TDN, crude fiber and protein. Grain yield At full maturity, PP plants from the three interior rows (10-ft length) in each plant will be harvested. PP grain will be thrashed on a mechanical thrasher. Grain yields will be determined and adjusted to a moisture content of 13%. Complete soil test (N, P, K, Ca, Mg, S) at 0-3," 3-6" and 6-12" depth intervals will be performed at the end of the experiment. The experiment will be repeated for three years. Statistical Analysis of Data All data will be analyzed using ANOVA to test for treatment effects and interactions. General Linear Model procedure of SAS (SAS Institute 2004) will be used for calculations.

Progress 10/01/13 to 08/31/15

Outputs
Target Audience:This project sought to involve TSU college students in the conduct of research and provide extension of information to farmer groups. Changes/Problems:Due to the official retirement of the OPI from TSU in the SECOND year of the project, the following changes/alterations were made inthe Major Goals of the project (to be reflected in Non-Technical Summary of this project): REVISED Major Goals of the project: The overall goal of this studywas to investigate pigeon pea potential as a summer annual legume crop. The proposed research evaluated the agronomic feasibility of growing pigeon pea as a niche crop for small-holder agriculture in Tennessee. A two-year field study wasconducted at the TSU Nashville Agriculture Research and Extension Center (AREC) to evaluate the effects of selected agronomic management factors onpigeon pea biomass, and on its grain yield. Two varieties of pigeon pea (Georgia 1 and Georgia 2) were studied in relationship to cropping systems, tillage methods, and row spacing during the 2013 and 2014 growing seasons. Treatments were: Two varieties of mono-cropped pigeon pea and pigeon pea intercropped with field-corn plantedby conventional tillage and a no-till planting system using spacings of 20" and 40" between rows. These sixteen combinations were planted in three replications. The study was conducted on an Armour silt loam soil (fine-silty, mixed, active, thermic ultic hapludalf) in Nashville, Tennessee (USA). What opportunities for training and professional development has the project provided?This project provided experiential learning opportunities for students in the following specific areas: (1) design of experiments, (2) data collection and soil plant chemical analyses. How have the results been disseminated to communities of interest?Farm Fact sheets were given out to attendees at the yearly Small Farm Expo and field demonstrations at Tennesse State Unversity in 2014 and 2015. What do you plan to do during the next reporting period to accomplish the goals?This IS the final report.

Impacts
What was accomplished under these goals? The overall goal of this studywas to investigate pigeon pea potential as a summer annual legume crop. The proposed research evaluated the agronomic feasibility of growing pigeon pea as a niche crop for small-holder agriculture in Tennessee. A two-year field study wasconducted at the TSU Nashville Agriculture Research and Extension Center (AREC) to evaluate the effects of selected agronomic management factors onpigeon pea biomass, and on its grain yield. Two varieties of pigeon pea (Georgia 1 and Georgia 2) were studied in relationship to cropping systems, tillage methods, and row spacing during the 2013 and 2014 growing seasons. Treatments were: Two varieties of mono-cropped pigeon pea and pigeon pea intercropped with field-corn plantedby conventional tillage and a no-till planting system using spacings of 20" and 40" between rows. These sixteen combinations were planted in three replications. The study was conducted on an Armour silt loam soil (fine-silty, mixed, active, thermic ultic hapludalf) in Nashville, Tennessee (USA). Pigeon pea field performance, biomass, seed yield and crude protein content were determined. Corn yields were also measured to determine synergistic effects of intercropping. Between years, significant differences existed for field performance, biomass, and seed yield, likely due to earlier planting in 2014. Plant height, stem diameter, podset, canopy coverage, and other variables, were influenced by variety and cropping system in most cases, while spacing and tillage had limited effects. Grain crude protein content was generally unaffected by any of the treatments. Intercropping with corn will likely increase cost for weed control, harvest, and fertilizer, while decreasing yield and biomass for both varieties. Corn was not mechanically harvestable until pigeon pea maturity, increasing harvest loss due to weather and pests. Results indicated that early planting and use of short-day varieties will increase pigeon pea yield in Middle Tennessee (USA). Mono-cropping of pigeon pea is likely to decrease costs in a mechanized farming operation.

Publications

  • Type: Theses/Dissertations Status: Accepted Year Published: 2014 Citation: Duseja, D., A. Lotze and F. Yuldashev. 2014. Promoting Pigeon pea (Cajanus cajan L. Millsp) Production for Limited Resource Farmers of Tennessee as a Food, Forage and Soil Improving Cover Crop. Poster Pater, TSU 2014 Small Farms Expo., TSU. Lotze, Andrew. 2015. Field performance, yield and crude protein content of two varieties of pigeon pea [Cajanus cajan] as affected by tillage, spacing and intercropping with corn [Zea mays]. MS Thesis. Tennessee State University.


Progress 10/01/13 to 09/30/14

Outputs
Target Audience: This project seeks involved students (both graduate and undergraduate) in the conduct of research and provide extension of information to farmer groups. Information about adaptability/production was disseminated through diverse means including the TSU Cooperative Extension web site, facts sheets and field demonstrations to area farmers/producers and local school teachers/visiting students. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided? This project provided experiential learning opportunities for students in the following specific areas: (1) design of experiments, (2) data collection (production and marketing) and analyses, and (3) effective design of extension and outreach programs. How have the results been disseminated to communities of interest? Farm Fact sheets were given out to attendees at the yearly Small Farm Expo and at field demonstration at Tennesse State Unversity. What do you plan to do during the next reporting period to accomplish the goals? Another field study will be conducted next year(Summer 2014) at the TSU Nashville Agricultural Research and Extension Center (AREC) to evaluate the effects of selected agronomic management factors on the soil physical and chemical properties, on pigeon pea biomass and root growth, and on its grain yield and stalk biomass potential. Effects of row spacing, summer cover crop, and intercropping with sweet corn (Zea mays) as a companion crop on the field performance and yield of two selected pigeon pea cultivars will be evaluated annually for three years. Experiment design will be a split-plot statistical design with three replications, as before. Soil quality parameters to be annually evaluated as a function of time will be: soil bulk density, soil aggregate stability, organic matter, pH, water holding capacity, and infiltration. CO2 emissions will be measured, and water use efficiency (WUE) will be calculated. Pigeon pea crop performance will be monitored throughout the season; leaf area index (LAI) and transpiration rates will be determined. Grain and biomass (root and stalk) yields will be obtained. Stalks will be chemically analyzed for TDN, crude fiber and protein and other forage quality parameters as a function of time. Student experiential research learning and outreach efforts will be made involving both graduate and undergraduate students in the conduct of research, and providing extension information to farmer groups. Information about adaptability/production will be disseminated through diverse means including the TSU Cooperative Extension web site, facts sheets and field demonstrations to area farmers/producers and local school teachers/visiting students.

Impacts
What was accomplished under these goals? Two goals of this study FOR THIS YEAR to investigate pigeon pea potential were accomplished: (1) a summer annual legume as a soil improving cover crop; (2) a source of summer forage. These forage samples have been collected and will be chemically analyzed for forage quality.

Publications

  • Type: Conference Papers and Presentations Status: Published Year Published: 2014 Citation: Duseja, D., A. Lotze and F. Yuldashev. 2014. Promoting Pigeon pea (Cajanus cajan L. Millsp) Production for Limited Resource Farmers of Tennessee as a Food, Forage and Soil Improving Cover Crop. Poster Pater, TSU 2014 Small Farms Expo.