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ARS Home » Pacific West Area » Pullman, Washington » Northwest Sustainable Agroecosystems Research » Research » Publications at this Location » Publication #236476

Title: Pacific Northwest USDA-ARS Jointed Goatgrass Research and Extension Activities

item Young, Francis

Submitted to: Western Society of Weed Science Meeting Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 3/8/2009
Publication Date: 7/13/2009
Citation: Young, F.L., Yenish, J.P., Sullivan, L.S., Ball, D.A., Thill, D.C., Zemetra, R.S. 2009. Pacific Northwest USDA-ARS Jointed Goatgrass Research and Extension Activities. Western Society of Weed Science Meeting Proceedings.

Interpretive Summary:

Technical Abstract: The USDA-ARS weed scientists have conducted research and extension activities on six research projects funded by the National Jointed Goatgrass Research Program (NJGGRP). This poster reviews the objectives and major research findings from these federally funded projects. Most of these projects were conducted in cooperation with research scientists and personnel from Washington State University, University of Idaho, and Oregon State University. The projects ranged from short-term single component to long-term integrated field projects. Short-term projects examined competitive winter wheat varieties, wheat seeding rate and seed size, natural selection of weed resistance, conventional versus no-till wheat planting methods, and date of spring wheat planting on weed seed viability. Three long-term (>5 yrs) projects were conducted which integrated numerous single-component studies conducted by Western Society of Weed Science researchers either prior to or during the early phase of the NJGGRP. The first long-term study, conducted in WA, OR, and ID, examined the effect of one-time stubble burning, length of time between winter wheat crops, and integrated planting practices for winter wheat (increase seed size and seeding rate). The second long-term project determined the effect of no-till, deep plowing, and herbicide-resistant winter wheat on JGG population dynamics. The third long-term study conducted in the low rainfall zone (winter wheat-fallow) and high rainfall zone (annual cropping region) evaluated the best crop rotation for JGG control using imidazolinone resistant wheat. Data from these NJGGRP studies were presented at professional regional, state, and international weed conferences; local field days; and in regional JGG bulletins.