Potato Grower

February 2020

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WWW.POTATOGROWER.COM 41 For pictures and Info go to Dwight: 208-221-4765 - Carl: 208-431-3405 - Keith: 208-431-9300 Thursday, March 5, 2020• 11:00 Located: 1900 S 2610 W Aberdeen, Idaho 4073-16USAuction13s.indd 1 1/6/20 12:03 PM effect was a reduction in fungi known to be nematode pathogens, and the second effect was an increase in bacteria known to be able to decay complex carbohydrates, including carbohydrates of nematode corpses. In terms of nematodes in this experiment, we found that 1,3-D killed 98 percent of the nematodes present in pre-treatment measurements across all nematode species assessed, primarily root lesion and stubby root nematodes. Although we did not observe statistically significant differences in potato yield in 2017, we did observe an average 3.4 ton- per-acre (14.5 percent) increase in yield in treatments fumigated with 1,3-D over the non-fumigated control. There also appeared to be a rate response, with 11, 13, 15 and 20 gallons per acre yielding 11, 15, 15 and 18 percent more than the non-fumigated control, respectively. Investigating soil microbial community structure in response to different crop management strategies, including pesticide application, may eventually help growers manage their soil microbial communities in ways that will enhance crop health and productivity. In potato cropping systems in the short- term, there may be a greater impact on the soil microbial community from agricultural practices such as tillage, use of cover crops and irrigation than from fumigant application. Ken Frost is a plant pathologist at Oregon State University's Hermiston Agricultural Research and Extension Center. He can be contacted at kenneth.frost@oregonstate.edu. Yuan Zeng is a post-doctoral researcher in Colorado State University's Department of Bioagricultural Sciences and Pest Management. Jane Stewart is a professor of plant pathology at Colorado State University, and can be reached at jane.stewart@colostate.edu. Zaid Abdo is a computational biologist specializing in metagenomics and microbiome research at Colorado State University. He can be contacted at zaid.abdo@colostate.edu . Amy Charkowski is a plant pathologist and head of Colorado State University's Department of Bioagricultural Sciences & Pest Management. She can be reached at amy.charkowski@colostate.edu. 162809Baicor13s.indd 1 10/25/16 2:58 PM

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