http://hdl.handle.net/1957/16375 2013-05-18T11:23:01Z http://hdl.handle.net/1957/16623 Cultural management of corn root rot: Report to the Oregon Processed Vegetable Commission, 2005 Stone, Alex; Miyazoe, Mikio; Weston, Galen; Hertel, Michael 1. Rotbusters Field Survey.  Kokanee and Basin were the only varieties sampled in 2005. There was a significant relationship between radicle rot severity and gross yield for Kokanee but not for Basin.  In previous years, we have shown that for Jubilee, approximately 3 tons of gross yield are lost in fields of very high root rot potential compared to those of very low root rot potential. We have also shown that Coho and SSJ+ lose about half that, or about 1.5 tons. In 2005, across all fields scouted, approximately 1.5 tons of gross yield in Kokanee were lost when this variety was planted into fields of very high root rot potential relative to planting into fields of very low root rot potential.  Kokanee, Coho and Basin are higher yielding than either Jubilee or SSJ+, regardless of the root rot potential of the soil. 2. Impacts of High Biomass Cover Cropping on Root Rot and Yield of Sweet Corn.  In a research station replicated field trial, no late summer or winter cover crop treatments significantly suppressed root rot or increased yield of sweet corn.  In a pseudo-replicated on-farm trial, all winter cover crop treatments (oats “Saia”, arugula “Nemfix” and mustard mix “Caliente” strongly suppressed nodal root rot of sweet corn but had no significant effect on sweet corn yield.  It is likely that the effects of cover crops on root rot and yield of sweet corn are the combined result of the effects of cover crop management on microbial activity (general suppression), nitrogen mineralization, plant available water, and possibly other soil factors. More work is required to better understand how to best manage high biomass cover crops to improve sweet corn productivity. 2005-01-01T00:00:00Z http://hdl.handle.net/1957/16622 Cultivar evaluation for control of common smut in sweet corn and high plains virus in the Columbia Basin of Oregon and Washington: Report to the Agricultural Research Foundation for the Oregon Processed Vegetable Commission, 2005 Hamm, Philip; Clough, George; duToit, Lindsey; David, Nick; Gieck, Stacy Planting date/cultivar evaluation: Thirty-six sweet corn cultivars were evaluated for resistance to natural infection by common smut (Table 1). Plots were seeded to 30,800 plants/acre on May 16 and Jun 23 on the Hermiston Agricultural Research and Extension Center on Adkins fine sandy loam (pH 6.7, 0.9% organic matter). The four 30 ft rows/plot were spaced 30 inches apart. The experimental design was a randomized complete block, with four replications. Normal commercial production practices were followed. At ear maturity, plant stand was recorded, and the number and location (at base, between base and ear, on ear, between ear and tassel, on tassel) of smut galls were noted for each plant. Some plants had more than one infection location. Data were analyzed with the SAS GLM procedure following arcsine transformation. Duncans multiple range test was used for mean separation. 2005-01-01T00:00:00Z http://hdl.handle.net/1957/16620 Puncturevine and hairy nightshade management: Research report submitted to the Agricultural Research Foundation and the Oregon Processed Vegetable Commission, 2005 Peachey, Ed The objectives of this project were to evaluate the efficacy of common row crop herbicides for control of puncturevine, and determine the effect of post harvest weed management strategies on hairy nightshade seed development. 2005-01-01T00:00:00Z http://hdl.handle.net/1957/16619 Evaluation of fungicides for the control of gray and white mold in snap beans: Report to the Agricultural Research Foundation for the Oregon Processed Vegetable commission, 14 December, 2005 Ocamb, Cynthia M.; McReynolds, Robert B.; McGrath, Daniel; Peachey, Ed Cancellation of the registration of an effective bean mold fungicide, Ronilan, is slated to occur at the end of growing season in 2005. Finding equivalent alternatives by 2006 for use in snap bean is critical. The goal of the project is to continue evaluations of alternative fungicides for their effectiveness in controlling Gray Mold (Botrytis cinerea) and White Mold (Sclerotinia sclerotiorum) on snap bean using Ronilan as the industry standard. 2005-12-14T00:00:00Z