Progress 01/01/04 to 09/30/08
Outputs
OUTPUTS: The Klamath Basin Research & Extension Center (KBREC) continued participation in Oregon and Regional potato variety development programs, conducting germplasm screening and evaluation at all levels. Approximately 24,000 first-year single hills from crosses targeted for niche fresh market, pigmented flesh, and disease and pest resistance were screened at an off-station site with about 195 clones retained for further evaluation. Ninety-two selections from 2006 single hills were screened in 4-hill observation plots at KBREC. An additional 23 pigmented flesh selections were evaluated in Klamath Falls, OR, and several other cooperating sites throughout the Pacific Northwest to determine differences in pigment concentration and stability across varying production regions. Forty-eight pigmented flesh and niche fresh market preliminary and advanced selections were evaluated in replicated trials. About 108 traditional russets and 24 red-skinned and advanced specialty-type selections
were evaluated in Oregon and regional replicated trials. Six advanced russet selections nearing release were evaluated in replicated seed spacing trials to determine optimum planting density under local conditions. An experimental nematicide was evaluated using various application techniques to determine efficacy in reducing populations and tuber damage caused by root-knot and stubby-root nematodes. An experimental seedpiece formulation reported to possess 'anti-rot' properties were evaluated alone and in combination with standards seedpiece fungicides to determine efficacy under high soil moisture conditions prior to emergence. A trapping program to assess population dynamics of potato tubermoth (Phthorimaea operculella Zeller) was implemented at 25 site locations throughout the Klamath Basin. In addition, soil temperatures were monitored throughout the Klamath Basin to advise growers on application timings for optimum nematode control using Vydate CL-V. Results from previous trials
evaluating Vydate CL-V for root-knot and stubby-root nematode control were published as an M.S. and Ph.D thesis. Various green manure cover crops alone and in combination were evaluated to determine biomass potential and efficacy in reducing soil-borne nematode populations. Potatoes will be planted into these areas this spring to assess yield and quality parameters following the various green manure treatments. Results from the above mentioned efforts have been disseminated to local and regional clientele via monthly extension newsletters, newspapers, trade magazines, television, seminars and conferences, and one-on-one visits to producers. The most significant outputs during the life of this project has been the adoption of new potato varieties by local and regional producer groups. Nationwide, TriState selections and released varieties are produced on approximately 16,000 acres of certified seed. This total represents about 15% of all domestic seed supplies and has the potential to
support approximately 240,000 acres of commercial potatoes.
PARTICIPANTS: Individuals: Charlton, Brian A. - Principal Investigator, Oregon State University - Klamath Basin Research & Extension Center (KBREC). Culp, Darrin A. - Faculty Research Assistant, Oregon State University - KBREC. Assisted Principal Investigator in all facets of potato variety development program. Partner Organizations, Collaborators: Oregon Potato Variety Development Program, TriState Potato Variety Development Program, Western Regional Potato Variety Development Program, Oregon Potato Commission, Potato Variety Management Institute, Klamath Potato Growers Association Contacts: Agricultural Conferences (limited or non-speaking) Core Pesticide Training Seminar; 12/15/06 and 12/19/07, Klamath County Extension Office, 20 in attendance per year. Brief instruction on calibration and laws and safety accompanied by standard video. 2006, 2007, and 2008 Integrated Pest Management Seminar; O.I.T Auditorium, Klamath Falls, OR. 100 in attendance. Annual Oregon Potato Conference;
1/25/07 - 1/26/07, LaSell's Stewart Center, Corvallis, OR. 120 in attendance. Agricultural Conferences New Potato Varieties for the Klamath Basin OSU/UC Winter Potato Seminar, Merrill, OR. 2/15/07 (57 in attendance). New Potato Varieties for the Klamath Basin. OSU/UC Winter Potato Seminar, Tulelake, CA. 2/16/06 (40 in attendance) Field Day Presentations Potato Research Updates - What is happening with potato research at KBREC, 8/18/07, KBREC AugustFest; 40 in attendance on tour. Green Manure Crops for Pest and Disease Suppression, 8/18/07, KBREC AugustFest; 40 in attendance on tour. Oregon Potato Variety Development, 8/18/07, permanent booth at KBREC AugustFest; approximately 400 in attendance. Preliminary results of performance of 2,4-D to enhance skin color of red potatoes, 6/29/06 KBREC Field Day, (30 in attendance). Update on potato variety development in the Klamath Basin, 6/29/06 KBREC Field Day (30 in attendance). Bio-fumigation, Do cover crops work, 6/29/06 KBREC Field Day,
(30 in attendance). Television and Interviews with Media Reporters (most recent) KOTI - TV 2 (Klamath Falls): 11/06 - Storage Recommendations for Pink Rot in Potato 12/06 - Coverage of Upcoming IPM Seminar 2/07 - Coverage of Winter Potato Seminar KDRV 12/KDKF 31 (Klamath Falls): 3/07 - BASF Herbicide Lawsuit 3/07 - Trends in Farm Size in Oregon 8/07 - KBREC AugustFest 9/07 - Oregon Farmers Very Computer Savvy Herald & News - Klamath Falls Newspaper 12/06 - Colored-flesh potatoes 2/07 - BioDiesel 8/07 - Breeding for Pest & Disease Resistance 10/07 - Value of Agriculture to Local Economy AP Wire Not Your Father's Potato http://www.sciencedaily.com/releases/2006/11/061116091843.htm OSU President's Report 2007 Discovery in Agriculture - Impact on Organic Production http://oregonstate.edu/leadership/president/2007Report/impact.php
TARGET AUDIENCES: Target Audiences: Growers, producer groups, agricultural consultants, agribusiness operations, cooperating researchers, government officials. Efforts: See current and past publication lists and information provided in 'Contacts' portion of 'Participants' section above.
Impacts
The Pacific Northwest produces 60 percent of the U.S. fall potato crop. Rising costs and low returns threaten the economic stability of producers. Research to improve returns, identify new market opportunities, or reduce inputs is essential for a healthy and stable industry. TriState releases play an important economic role in the Pacific Northwest (PNW) potato industry. Russet Burbank currently comprises about 66%, 25%, and 35% of the total acres in Idaho, Oregon, and Washington, respectively. Therefore, it is not surprising that TriState varieties have supplanted a significant portion of Russet Burbank acreage in the PNW. Domestic consumption of fresh and processed potatoes continues to decline. To help offset these declines, commercial interest in specialty potato varieties by fresh market and processing sectors continues to rise. Several selections in the Oregon program appear to offer significant improvements over currently available varieties. The program also
includes promising clones with late blight, virus, or nematode resistances. Eventual releases with these characteristics will offer economic advantages for lower input production costs and reduced use of environmentally unfriendly protectants. Vydate CL-V has shown great promise for control of root-knot nematode infections and corky ring spot damage at high population pressures. Vydate CL-V usage has reduced input costs to one-third of traditional control practices and usage in the Klamath Basin has increased nearly five-fold since 2002. Timely foliar applications of very low rates of 2,4-D were demonstrated to enhance skin color at harvest and following storage in a relatively light colored red-skinned variety. Although potato tuber moths were not found in the Klamath Basin in 2007, trapping surveys and timely dissemination of information prevented unnecessary applications of foliar insecticides for control of tuber damage.
Publications
- No publications reported this period
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Progress 01/01/06 to 12/31/06
Outputs
The Klamath Basin Research & Extension Center (KBREC) continued participation in Oregon and Regional potato variety development programs, conducting germplasm screening and evaluation at all levels. Approximately 10,000 first-year single hills from crosses targeted for niche fresh market, pigmented flesh, and disease and pest resistance were screened at an off-station site with about 100 clones retained for further evaluation. Over 120 selections from 2005 single hills were screened in 4-hill observation plots at KBREC. An additional 70 pigmented flesh and niche fresh market advanced selections were evaluated in replicated trials. About 190 traditional russets, 10 chipping, and 16 red-skinned and advanced specialty-type selections were evaluated in Oregon and regional replicated trials. Experimental seedpiece fungicide formulations were evaluated for the third year on Russet Norkotah. Improvement of skin color and freedom from external blemishes through the use of
2,4-D and calcium applications was also evaluated for the third year on 4 red-skinned clones. In addition to yield, grade, and quality assessment, these selections were evaluated three times out of storage to determine light, chroma and hue values on the skin surface using a colorimeter. Meadowfoam (Limnanthes alba Benth.) seed meal extracts were evaluated in replicated trials to determine various application timings on yield, grade, and quality responses of Russet Norkotah. A trapping program to assess population dynamics of potato tubermoth (Phthorimaea operculella Zeller) was implemented at 25 site locations throughout the Klamath Basin. In addition, soil temperatures were monitored throughout the Klamath Basin to advise growers on application timings for optimum nematode control using Vydate CL-V. Results from previous trials evaluating Vydate CL-V for root-knot and stubby-root nematode control were published as an M.S. and Ph.D thesis. Various green manure cover crops were
evaluated in replicated trials on two different planting dates to determine biomass potential and efficacy in reducing soil-borne nematode populations. More detailed green manure cover crop trials are planned for further evaluation in 2007.
Impacts
The Pacific Northwest produces 60 percent of the U.S. fall potato crop. Rising costs and low returns threaten the economic stability of producers. Research to improve returns, identify new market opportunities, or reduce inputs is essential for a healthy and stable industry. Commercial interest in specialty potato varieties by fresh market and processing sectors continues to rise. Several selections in the Oregon program appear to offer significant improvements over currently available varieties. The program also includes promising clones with late blight, virus, or nematode resistances. Eventual releases with these characteristics will offer economic advantages for lower input production costs and reduced use of environmentally unfriendly protectants. Vydate CL-V has shown great promise for control of root-knot nematode infections and corky ring spot damage at high population pressures. Vydate CL-V usage has reduced input costs to one-third of traditional control
practices and usage in the Klamath Basin has increased nearly five-fold since 2002. Timely foliar applications of very low rates of 2,4-D were demonstrated to enhance skin color at harvest and following storage in a relatively light colored red-skinned variety. Although potato tuber moths were not found in the Klamath Basin in 2006, trapping surveys and timely dissemination of information prevented unnecessary applications of foliar insecticides for control of tuber damage.
Publications
- James, S., C. Shock, D. Hane, B. Charlton, and I. Vales. 2007. Oregon Potato Variety Development Program. In: Research Progress Report. Oregon Potato Commission, Portland, OR. Pp 36-41.
- Charlton, B.A. 2006. Effects of oxamyl on suppression of the Tobacco rattle virus vector Paratrichodorus allius and corky ringspot disease of potato in the Klamath Basin of south-central Oregon. M.S Thesis. Iowa State University. Agronomy Department.
- Hathaway, R., K. Rykbost, R. Roseberg, B. Charlton, et al. 2006. Research in the Klamath Basin, 2005 Annual Report. S.R. 1069, AES, Oregon State University, Corvallis, OR. 136 pp.
- Shock, C., D. Hane, K. Rykbost, et al. 2006. Oregon Potato Variety Development Program. In: Research Progress Report. Oregon Potato Commission, Portland, OR. Pp 49-57.
- Charlton, B.A., K. Locke. 2007. Klamath Basin Extension Potato Program. In: Research Progress Report. Oregon Potato Commission, Portland, OR. Pp 1-3.
- Brown, C.R., J.M. Crosslin, H. Mojtahedi, S. James, and B.A. Charlton. 2006. Stability of and Nature of Resistance to Corky Ringspot Disease in an Advanced Tetreploid Breeding Population. In press. Am J Potato Res.
- David, N.L, R.E. Ingham, N.D. McKinley, B.A. Charlton, K.J. Merrifield, and N.M. Wade. 2006. Post harvest symptom development of Meloidogyne chitwoodi on potato. Journal of Nematology 38:269-270
- Novy, R.G, S.L. Love, D.L. Corsini, J.J. Pavek, J.L. Whitworth, A.R. Mosley, S.R. James, D.C. Hane, C.C. Shock, K.A. Rykbost, et al. 2006. Defender: A high-yielding, processing potato cultivar with foliar and tuber resistance to late blight. Amer J Potato Res 83:9-19.
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Progress 01/01/05 to 12/31/05
Outputs
The KES continued participation in Oregon and Regional potato variety development programs, conducting germplasm screening and evaluation at all levels. Approximately 12,000 single hills from crosses targeted for pigmented flesh, disease resistance, and frost tolerance were screened at an off-station site with about 150 clones retained for further evaluation. Over 200 selections: primarily clones with pigmented flesh; from 2004 single hills were screened at KES. An additional 100 pigmented flesh and specialty selections were evaluated in replicated trials. About 160 traditional russets and 9 chipping selections were evaluated in Oregon and regional replicated trials. Forty selections were screened for resistance to Columbia root-knot nematode and tobacco rattle virus infections in a KES field with high nematode populations. Further studies were conducted to evaluate Vydate rates and timing for control of root-knot nematode and tobacco rattle virus infections under
high nematode pressure. Soil temperatures were monitored in this experiment and in several commercial fields to determine timing of root-knot nematode population increases and provide growers advice on application timing for optimum nematode control with Vydate. Response to plant populations was evaluated for GemStar Russet and 3 advanced selections in regional russet trials. Experimental seedpiece fungicide formulations were evaluated on Russet Norkotah. Improvement of skin color and freedom from blemishes through use of 2,4-D and calcium applications was evaluated for 4 red-skinned selections. Effects of pre-nuclear minituber seed size on performance of Wallowa Russet were evaluated for the second year. Chateau herbicide was evaluated alone and in combination with standard herbicides for weed control in potatoes. Early generation selections from the U.S. Potato Genebank were screened for frost tolerance at a remote site with high risk of mid-season frosts.
Impacts
The Pacific Northwest produces 60 percent of the U.S. fall potato crop. Rising costs and low returns threaten the economic stability of producers. Research to improve returns, offer new market opportunities, or reduce inputs is essential for a healthy and stable industry. Commercial interest in specialty potato varieties with enhanced anti-oxidant levels and nutritional benefits has increased in the past few years. Several selections in the Oregon program appear to be significant improvements over currently available varieties for these niche markets. The program also includes promising clones with late blight, virus, or nematode resistances. Eventual releases with these characteristics will offer economic advantages for lower input production costs and reduced use of environmentally unfriendly protectants. In 3 years of evaluations Vydate has shown great promise for control of root-knot nematode infections at high nematode population pressure in KES trials. This
product has provided adequate control while reducing control costs to one-third of traditional control practices using Telone and Vapam in combination. Findings on the effect of minituber seed size on performance indicate highest returns for the smallest seed if seed is priced uniformly irrespective of size. Findings could provide a basis for a price structure for minitubers based on their size. Timely foliar applications of very low rates of 2,4-D were demonstrated to enhance skin color at harvest and following storage in a relatively light colored red-skinned variety.
Publications
- Rykbost, K.A., R. Roseberg, et al. 2005. Research in the Klamath Basin, 2004 Annual Report. S.R. 1063, AES, Oregon State University, Corvallis, OR. 125 pp.
- Hane, D., K. Rykbost, et al. 2005. Oregon Potato Variety Development Program. In: Research Progress Report. Oregon Potato Commission, Portland OR. Pp 22-30.
- Ingham, R.E., B.A. Charlton, K.A. Rykbost, et al. 2005. Improving performance and determining limits of Vydate for control of nematode damage in potato. In: Research Progress Report. Oregon Potato Commission, Portland OR. Pp 31-44.
- Ingham, R.E., N.D. McKinley, B.A. Charlton, et al. 2004. Early season Oxamyl applications increase control of Columbia root-knot nematode (Meloidogyne chitwoodi) in potato. Journal of Nematology 36:313-314 (Abst.).
- David, Nick, R.E. Ingham, N. McKinley, and B.A. Charlton. 2004. Control of Columbia root-knot nematode (Meloidogyne chitwoodi) in potato cv Russet Norkotah with Vydate C-LV. Am J of Potato Res 81(1):53 (Abst).
- Shock, C.A., B.A. Charlton, et al. 2004. Evaluation of the Wallin model for regional predictions of potato late blight in semi-arid regions of Oregon. Am J of Potato Res 81(1):88 (Abst.).
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Progress 01/01/04 to 12/31/04
Outputs
The KES participated in Oregon and regional variety trials evaluating about 200 selections in replicated trials with conventional breeding lines for processing and fresh markets. Additional evaluations included screening of over 10,000 single-hills derived from crosses targeted at: specialty niche markets for pigmented flesh with nutritional benefits from anti-oxidant compounds; disease resistance for viruses and late blight; and frost tolerance for crops in environments with summer frost risks. These crosses included parents selected in the Klamath Basin from material provided by the U. S. Potato Genebank. Over 200 clones were selected for further evaluation. About 200 advanced lines with pigmented flesh were evaluated in 4-hill and replicated yield trials. Several clones have flesh pigmentation far more attractive than is available in current varieties. Additional projects evaluated nematode and related disease control options using various chemical compounds. One
study monitors soil degree days and nematode population dynamics as a basis for application timing of Vydate to avoid nematode reproduction. Vydate applied in-furrow at planting and in four following treatments provided excellent control of root-knot nematode infection and corky ringspot damage. Over 50% of tubers in untreated control plots were culls due to nematode damage. Five commercial fields were instrumented to monitor effects of soil and canopy differences on degree day accumulation. Data will assist growers in Vydate application timing decisions. Effects of greenhouse-produced mini-tuber seed size on performance of pre-nuclear seed stocks was evaluated for a new Oregon variety, Wallowa Russet. Increasing mini-tuber size from 5 to 14 gm only produced a 20% yield response. Effects of calcium and 2-4, D on skin color and bronzing of red-skinned varieties were evaluated jointly with UC-Davis personnel. A new carrier for seed treatment fungicides was evaluated on Russet Norkotah.
Significant yield differences were not observed between standard products and new formulations.
Impacts
Oregon potato research conducted on four branch experiment stations and campus departments and adjacent field plots contributes to a northwest potato industry that produces 60% of the U.S. fall potato crop. The recent Oregon potato variety release, Umatilla Russet, has gained acceptance as a processing variety on a significant acreage and generated over $50,000 in royalties from seed sales in 2004. Over 100 acres of seed was produced of the more recent Oregon releases Mazama, Winema, Klamath Russet, and Modoc in 2004. Acreage of these varieties will increase substantially in 2005 in Oregon, California, Washington and Idaho. Oregon workers have contributed to the development of Alturas and GemStar Russet, popular new releases from the Idaho program. Several advanced selections in the Oregon program include good resistance to late blight tuber infection, verticillium wilt, and several potato viruses. Several promising pigmented fleshed selections with anti-oxidant
nutritional benefits are gaining interest from processing firms. Results of research at KES suggest control of nematodes and related diseases can be achieved with Vydate at about one-third the cost of current practice using Telone and Vapam in combination. Further, Vydate provided good control of corky ringspot while a combination of Telone and Vapam nearby in the same field was not completely effective. This could lead to greater profitability for growers and reduced pesticide use.
Publications
- Ingham, R.E., K. Rykbost, et al. 2004. Improving performance of Vydate for control of nematode damage in potato. In: Research Progress Reports. Oregon Potato Commission, Portland, OR. pp 23-43.
- Rykbost, K.A., S.R. James, et al. 2004. Oregon Potato Variety Development Program. In: Research Progress Reports. Oregon Potato Commission, Portland, OR. pp 78-85.
- Rykbost, K.A., S.R. James, et al. 2004. Effects of seedborne PVY infection on performance of Russet Norkotah. In: Research Progress Reports. Oregon Potato Commission, Portland, OR. pp 86-90.
- Miller, J., K. Rykbost, et al. 2004. Influence of soil, seed source, and fludioxonil seed treatment on incidence and severity of silver scurf on daughter tubers. Am J Potato Res 81:74.
- Rykbost, K.A., R. Roseberg, et al. 2004. Research in the Klamath Basin, 2003 Annual Report. SR 1056, AES, Oregon State University, Corvallis, OR. 93 pp.
- Charlton, B., K. Rykbost, et al. 2004. Research equipment for multi-use chemigation trials in the Klamath Basin. In: Research Progress Reports. Oregon Potato Commission, Portland, OR. pp 1-2.
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Progress 01/01/03 to 12/31/03
Outputs
Sugarbeet research was terminated in 2000 when the processing facility for local crops was closed. Studies conducted previously identified superior varieties, appropriate N rates and plant populations, and evaluated herbicide-resistant genetic material. Results from planting date/plant population response studies were used as the basis for replant decisions in commercial fields following frost damaged. Potato research contributed to the release of 8 Oregon and 4 additional tri-state varieties, and evaluation of strains of Russet Norkotah and varieties released by Colorado and Texas. KES coordinated the regional evaluation of red-skinned genetic material and serves as the initial field site for screening specialty lines with pigmented flesh and other unique properties. The Oregon red-skinned releases Mazama, Winema, and Modoc were initially selected at KES. KES prepared release documents and journal publications for all but two of the Oregon releases. KES participated
in multi-location evaluation of chemical control measures for silver scurf, rhizoctonia, tobacco rattle virus, and root-knot nematode infections. KES coordinated a 3-site study that identified the response of Russet Norkotah to seed borne PVY infection. Seed management studies evaluated fungicide treatments, seedpiece size, and seed conditioning to hasten emergence of late maturing varieties. A 3-year study monitored nutrient loading in surface waters in the Klamath Basin. Results from wells, springs, canal intakes, and flood and drainage discharge from agricultural properties indicated contributions from agricultural activities have been overestimated in previous studies. Natural background levels of up to 8 ppm P were observed in artesian wells in the Wood River Valley. Agriculture in the Klamath Reclamation Project appears to be a net sink for P diverted to the project in surface waters from Klamath Lake. Findings were provided to the Oregon DEQ for incorporation in the Klamath
Headwaters TMDL report. KES prepared several reports on Klamath watershed hydrology and water quality issues for submission to a National Academy of Sciences committee investigating public policy decisions related to allocation of water for irrigation, endangered species, and tribal trust.
Impacts
Sugarbeet research contributed to profitability of this crop during the period of production through 2000. Growers implemented variety selection and fertility practices and avoided economic losses by not replanting damaged stands too late to achieve profits. Several of the Oregon potato variety releases have gained significant grower acceptance. Umatilla Russet has been accepted as the 4th leading French fry processing variety in the Northwest and was grown on over 50,000 acres in one or more years. Limited seed supplies have slowed growth of other varieties but growers in Oregon and California are very interested in the red-skinned varieties Mazama, Winema, and Modoc, and the Klamath Russet variety. Control of root-knot nematode infections in potato with Vydate C-LV appears to be feasible based on two years of KES research results. Significant cost savings could be achieved compared with current practices. Research on the effects of PVY on Russet Norkotah indicated
minor yield reductions in the short season Klamath Basin but very significant losses in the Columbia Basin for seed lots with high virus content. Growers use these findings for seed aquisition decisions. KES reports on watershed hydrology and water quality are being used to protect irrigation interests in the Klamath Basin. An interim report by the NAS committee investigating biological opinions that denied irrigation water to the Klamath Project in 2001, agreed with KES interpretation of multiple studies which failed to provide a scientific basis for withholding irrigation water to protect listed species.
Publications
- Rykbost, K.A., James, S.R., et al. 2003. Modoc: a potato variety with bright red skin and early maturity for fresh market. Am J Potato Res. 80:235-240.
- Hane, D.C., Rykbost, K.A., et al. 2003. Wallowa Russet: a full season long russet for processing and fresh market. Am J Potato Res. 80:289-294.
- Rykbost, K.A., Clark, D.L., et al. 2003. Research in the Klamath Basin, 2002 Annual Report. SR 1049, AES, Oregon State University, Corvallis, OR. 67 pp.
- Rykbost, K.A. and Charlton, B.A. 2003. Western regional red-skinned/specialty variety trials. In: Tri-state Potato Variety Trials. Progress Report 366. AES, University of Idaho, Moscow, ID. pp.87-92.
- Love, S.L., Rykbost, K.A., et al. 2002. IdaRose: a potato variety with bright red skin, excellent culinary quality and long tuber dormancy. Am J Potato Res. 79:79-84.
- Novy, R.G., Rykbost, K.A., et al. 2002. Bannock Russet: a dual-purpose, russet potato with high U.S. No.1 yield and multiple disease resistance. Am J Potato Res. 79:147-153.
- Rykbost, K.A. and Todd, R. 2002. Klamath Reclamation Project and related upper basin hydrology. In: Water allocation in the Klamath Reclamation Project, 2001. S.R. 1037. AES, Oregon State University, University of California, Corvallis, OR. pp. 45-73.
- Mosley, A.R., Rykbost, K.A., et al. 2002. OREGON National Germplasm Evaluation and Enhancement Report, 2000. ARS-160. USDA, ARS, Beltsville, MD. pp. 374-391.
- Rykbost, K.A., Charlton, B.A., et al. 2002. Western regional res-skinned/specialty variety trials. In: Tri-state Potato Variety Trials. Progress Report 357. AES, University of Idaho, Moscow, ID. pp. 89-94.
- Rykbost, K.A., Voss, R., et al. 2001. Winema: an early maturing, red-skinned cultivar for fresh market. Am J Potato Res. 78:371-375.
- Rykbost, K.A., Voss, R., et al. 2001. Mazama: an early maturing, bright red-skinned cultivar for fresh market. Am J Potato Res. 78:383-387.
- Mosley, A.R., Rykbost, K.A., et al. 2001. Klamath Russet: a full season, fresh market, long russet. Am J Potato Res. 78:377-381.
- Ingham, R.E., Rykbost, K.A., et al. 2001. Control of corky ringspot in Oregon. Am J Potato Res. 78:460. (Abst)
- Geary, Brad, Rykbost, K.A., et al. 2001. Effects of fungicides and location on development of silver scurf. Am J Potato Res. 77:399. (Abst)
- Rykbost, K.A. and Charlton, B.A. 2001. Nutrient loading of surface waters in the Upper Klamath Basin. SR 1023. AES, Oregon State University, Corvallis, OR. 14 pp.
- Rykbost, K.A., Charlton, B.A., et al. 2001 Research in the Klamath Basin: 2000 Annual Report. AES, Oregon State University, Corvallis, OR. 106 pp.
- Mosley, A.R., Rykbost, K.A., et al. 2001. OREGON Potato Germplasm Evaluation and Enhancement Report, 1999. ARS-158. USDA-ARS, Beltsville, MD. pp. 267-277.
- Mosley, A.R., Rykbost, K.A., et al, 2000. Umatilla Russet: a full season long russet for processing and fresh market use. Am J Potato Res. 77:83-88.
- Mosley, A.R., Rykbost, K.A., et al. 2000. Russet Legend: a full season long russet for processing and fresh market use. Am J Potato Res. 77:77-82.
- Mosley, A.R., Rykbost, K.A., et al. 2000. Century Russet: a high-yielding, fresh market cultivar with verticillium resistance. Am J Potato Res. 77:161-165.
- Rykbost, K.A., Dovel, R.L., et al. 2000. Research in the Klamath Basin: 1999 Annual Report. SR 1016. AES, Oregon State University, Corvallis, OR. 126 pp.
- Charlton, B.A., Rykbost, K.A., et al. 2000. Western regional red-skinned variety trials. In: Tri-state Potato Variety Trials. Progress Report 338. AES, University of Idaho, Moscow, ID. pp. 63-57.
- Rykbost, K.A. and Locke, K.A. 1999. Effect of seedpiece size on performance of three potato varieties in the Klamath Basin of Oregon. Am J Potato res. 75:75-82.
- Rykbost, K.A., Hane, D.C., et al. 1999. effect of seedborne potato Virus Y on Russet Norkotah performance. Am J Potato Res. 75:91-96.
- Carlson, H.L., Rykbost, K.A., et al. 1999. Effects of sugarbeet planting date and plant population on sugar yield in the Klamath Basin. Journal of Sugarbeet Tech. 36:(3)56. (Abst)
- James, S.R., Rykbost, K.A., et al. 1999. A world-wide-web database for potato breeding selections. Am J Potato Res. 76:373. (Abst)
- Rykbost, K.A., Dovel, R.L., et al. 1999. Research in the Klamath Basin, 1998 Annual Report. SR 1007. AES, Oregon State University, Corvallis, OR. 119 pp.
- Mosley, A.R., Rykbost, K.A., et al. 1999. OREGON National Potato Germplasm Evaluation and Enhancement Report, 1998. ARS-152. USDA, ARS Beltsville, MD. pp. 320-332.
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Progress 01/01/02 to 12/31/02
Outputs
Potato research trials at KES evaluated about 150 clones at various stages in Oregon and western regional potato variety development programs. Entries included russet, red-skinned, yellow-fleshed, and chipping selections. Four advanced or named red-skinned and five russet varieties were evaluated for response to plant population. Newly released Oregon varieties Klamath Russet, Mazama, and Winema are being bulked up by local seed growers for commercial production in the Klamath Basin. About 10,000 first-generation, single-hill breeding selections with unique skin/flesh colors or virus resistance were screened at a remote site in the Klamath Basin. Over 120 clones were selected for further evaluation. Vydate was evaluated for control of root-knot nematodes using in-furrow and/or one to three foliar applications. This study included continuous monitoring of soil temperature to relate nematode population dynamics to degree-day accumulation. Soil samples collected weekly
through the growing season will be assayed for nematode populations. Tuber samples indicate good control of root-knot nematode damage was achieved in several treatments using multiple applications of Vydate. Similar studies conducted in the Columbia Basin will assist in determining nematode population dynamics and the potential for control with this product. Metham-sodium injected at three depths pre-plant in areas used for variety trials did not provide satisfactory control of root-knot nematodes at KES.
Impacts
Klamath Basin seed growers are bulking early generation seed of the new Oregon releases Klamath Russet, Mazama, and Winema. Each of these selections seems to offer the local industry potential for specialty or fresh market access. Significant commercial acreages will not be available until 2004. KES data and written and oral presentations to the NRC panel charged with evaluating the science behind biological opinions that resulted in denial of irrigation water to the Klamath Reclamation Project in 2001, may have positively influenced the panel's findings presented in their preliminary report issued in February 2002. As a result of the NRC report, water allocation in 2002 provided adequate deliveries for irrigation and reduced allocations for endangered species in the watershed. Unchanged biological opinions would have resulted in severely reduced irrigation supplies for 2002.
Publications
- SHOCK, C.C., K.A. Rykbost, et al. 2002. Oregon potato variety development program. In: Research Progress Reports. Oregon Potato Commission. pp. 88-94.
- RYKBOST, K.A., H.L. Carlson, et al. 2002. Evaluation of seed aging of new russet varieties. In: Potato Board Annual Report. California Potato research Advisory Board. Dinuba, CA. pp. 65-73.
- RYKBOST, K.A., B.A. Charlton, et al. 2002. 2001Western regional red- skinned/specialty variety trials. In: 2001 Tri-state Potato Variety Trials. Progress Report 357. AES, Univ. of Idaho, Moscow, ID. pp. 89-94.
- LOVE, S.L., K.A. Rykbost, et al. 2002. IdaRose: a potato variety with bright red skin, excellent culinary quality, and long tuber dormancy. Am J Potato Res 79:79-84.
- NOVY, R.G., K.A. Rykbost, et al. 2002. Bannock Russet: a dual-purpose, russet cultivar with high U.S. No. 1 yield and multiple disease resistances. Am J Potato Res 79:147-153.
- RYKBOST, K.A., D.R. Clark, et al. 2002. Research in the Klamath Basin, 2001 Annual Report. Special Report 1042. AES, Oregon State University, Corvallis, OR. 116 pp.
- MOSLEY, A.R., K.A. Rykbost et al. 2002. OREGON National Potato Germplasm Evaluation and Enhancement Report, 2000. ARS-160. USDA, ARS, Beltsville, MD. pp. 374-391.
- RYKBOST, K.A. and B.A. Charlton. 2002. Cultural management for potato varieties. In: Research Progress Reports. Oregon Potato Commission, Portland OR. pp. 80-87.
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Progress 01/01/01 to 12/31/01
Outputs
Research programs were curtailed by loss of irrigation water in the Klamath Irrigation Project to protect endangered sucker species in Upper Klamath Lake and threatened coho salmon in the Lower Klamath River. About 150 numbered selections were evaluated in Oregon and regional potato variety development programs at an off-station rented site. Three promising clones from the Oregon program are planned for release in 2002, including a processing russet, a chipping line and a red-skinned fresh market selection. Cooperative studies with UC Davis personnel evaluated affects of seed conditioning on the new, late-maturing russet varieties Klamath Russet and Gem Russet. The potential for early harvest, specialty fresh-market performance of 5 varieties over a range of planting dates was also studied jointly. KES participated in multi-location studies to evaluate seed treatment for control of silver scurf in potato. Results of a 3-year study of nutrient loading of surface waters
were published and presented in several venues. Sugarbeets are no longer grown in the region and research on this crop has been suspended.
Impacts
New potato varieties Klamath Russet, Mazama, and Winema, released from the Oregon breeding program, all have excellent potential for the fresh market industry in the Klamath Basin. Seed supplies could be sufficient for significant acreages in 2003. Initial commercial experience with Klamath Russet has been very successful. Loss of irrigation supplies in 2001 resulted in serious financial loss to the Klamath Basin industry. Recovery may hinge on the ability to establish niche markets with new varieties ideally adapted to local conditions. Water quality data developed and published from this project are being used to protect agricultural interests as TMDL limits for nutrient loading are established in the near future.
Publications
- RYKBOST, K.A., R. Voss et al. 2001. Winema: An early maturing, red-skinned cultivar for fresh market. Am J Potato Res 78:371-375.
- RYKBOST, K.A., R. Voss et al. 2001. Mazama: An early maturing, bright red-skinned cultivar for fresh market. Am J Potato Res 78:383-387.
- MOSLEY, A.R., K.A. Rykbost et al. 2001. Klamath Russet: A full season, fresh market, long russet. Am J Potato Res 78:377-381.
- GEARY, Brad, K.A. Rykbost et al, 2001. Silver Scurf, an emerging potato disease. Am J Potato Res 78:454 (Abst).
- INGHAM, R.E., P.B. Hamm, and K.A. Rykbost. 2001. Control of corky ringspot in Oregon. Am J Potato Res 78:460 (Abst).
- MOSLEY, A.R., K.A. Rykbost et al.2001. Oregon National Potato Germplasm Evaluation and Enhancement Report. USDA/ARS, Beltsville, Maryland. pp. 267-277.
- RYKBOST, K.A., D.R. Clark et al. 2001. Research in the Klamath Basin, 2000 Annual Report. Special Report 1030. AES, Oregon State University, Corvallis, OR. 106 pp.
- RYKBOST, K.A. and B.A. Charlton. 2001. Nutrient loading of surface waters in the Klamath Basin. Special Report 1023. AES Oregon State Univ. Corvallis, OR. 14 pp.
- RYKBOST, K.A., B.A. Charlton et al. 2001. 2000 western regional red-skinned variety trial. In: 2000 Tri-state Potato Variety Trials. Progress Report 345. AES, Univ. of Idaho, Moscow, ill. pp. 79-84.
- JAMES, S.R., K.A. Rykbost et al. 2001. Oregon Potato Variety Development. In: Oregon Potatoes - Research Progress Reports. Oregon Potato Commission, Portland, OR pp. 37-41.
- RYKBOST, K.A. and B.A. Charlton. 2001. Cultural management for potato varieties. In: Oregon Potatoes - Research Progress Reports. Oregon Potato Commission, Portland, OR pp. 122-131.
- RYKBOST, K.A. and B.A. Charlton. 2001. Nutrient Loading in the Klamath Basin. In: Proceedings of the Western Nutrient Management Conference, Salt Lake City, UT.
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Progress 01/01/94 to 12/30/94
Outputs
ORE00492 1994-1998 access 0163890 Hatch OK conversion 1961-1994 access 0013084 State end Sugarbeet research evaluated: 44 varieties; N rates from 55 to 220 kg/ha; and response to planting date and population. Varieties for commercial production are based on results of variety evaluations. Optimum sugar yield and economic returns occurred at 55 kg N/ha. Each week delay in planting after mid-April reduced gross returns by $200/ha. Populations of 40 to 80 K plants/ha produced similar yields and economic returns over a 6-week planting period. Plantings in late May were not profitable. About 100 advanced russet and red-skinned potato selections were evaluated for yield, grade and quality. Century Russet will be the first Oregon release in 1995. Local research identified optimum management practices for Century Russet. Several red-skinned lines from local screening of 4,000 to 6,000 single-hills, annually, are in advanced stages of regional evaluation. One selection,
NDO2438-7R, has shown excellent performance and late blight resistance. Standard and experimental chemicals failed to control stubby-root (SR) nematodes and corky ringspot disease (CRS) in Russet Burbank at pretreatment populations of 200/250g soil. Telone II at high labeled rates gave adequate control of root-knot (RN) nematodes at 150 to 250/g soil). SR populations stayed constant through the season. RN nematodes had generation increases at HU accumulations (base 5C) reported elsewhere. CRS infection was observed at 2.5 cm tuber diamet.
Impacts
(N/A)
Publications
- FEIBERT, E.B.G., JAMES, S.R., RYKBOST, K.A., MITCHELL, A. R., and SHOCK, C.C. l1995. Foliar-applied methanol and potato yield and quality. Hortscience (in epress) RYKBOST, K.A. and INGHAM, R.E. 1994. Timing and severity of corky ringspot infection of four potato cultivars. Am Potato J 71(10):697 (Abst.) FEIBERT, E.
- B.G., JAMES, S.R., RYKBOST, K.A., MITCHELL, A.R., SHOCK, C. C., and CROWE, F.J. 1994. Effect of methanol on potato production at three Oregon locations. Am Potato J 71(10):671 (Abst.) JAMES, S.
- R., FEIBERT, E.B.G., RYKBOST, K.A., MITCHELL, A. R., and SHOCK, C.C. 1994. Effect of methanol on potato production at three Oregon locations. Agron. Abst. p 140.
- CARLSON, H.L. and RYKBOST, K.A. 1994. Sugarbeet date of planting studies in the Klamath Basin. Research Progress No. 105. University of California IntermountainResearch and Extension Center, Tulelake, CA. 9 numb. leaves.
- HANE, D., JAMES, S.R., RYKBOST, K. A., and STANGER, C. 1994. Oregon potato variety development program. In: Oregon Potatoes - Research Progress Reports. Oregon Potato Commission. Portland, OR. pp 14-17.
- RYKBOST, K.A. 1994. Cultural management for potato varieties. In: Oregon Potatoes - Research Progress Reports. Oregon Potato Commission. Portland, OR. pp76-84.
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