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Title: ASSESSING THE RESPONSE OF GLYPHOSATE TOLERANT WHEAT TO FUNGAL PATHOGENS.

Author
item BALEY, G - WASHINGTON STATE UNIV.
item Paulitz, Timothy
item Garland-Campbell, Kimberly
item YENISH, J - WASHINGTON STATE UNIV
item KIDWELL, K - WASHINGTON STATE UNIV

Submitted to: American Society of Agronomy Meetings
Publication Type: Other
Publication Acceptance Date: 8/20/2003
Publication Date: 11/20/2003
Citation: BALEY, G.J., PAULITZ, T.C., CAMPBELL, K.G., YENISH, J.P., KIDWELL, K.K. 2003. ASSESSING THE RESPONSE OF GLYPHOSATE TOLERANT WHEAT TO FUNGAL PATHOGENS. (CD-ROM).AMERICAN SOCIETY OF AGRONOMY ANNUAL MEETING, 2-6 NOV., DENVER, CO. ASA, CSSA, AND SSSA ABSTRACTS.

Interpretive Summary:

Technical Abstract: Glyphosate tolerant wheat will permit 'in crop' weed control while maintaining the intrinsic environmental and economic benefits associated with no-till crop production. However potential yield gains may be lost due to increased activity of soilborne pathogen on dying weeds within a glyphosate tolerant wheat crop. The objective of this study is to proactively determine the risks of incorporating glyphosate tolerant wheat into no-till production systems. Near isogenic lines (NILs), with and without glyphosate tolerance, of two spring wheat cultivars were evaluated under no-till conditions in three agroclimatic zones in Eastern Washington. A mixture of spring barley and sterilized oat seed inoculated with Rhizoctonia solani/oryzae or Gaeumannomyces graminis var. tritici (GGT) were direct seeded into the field plots prior to planting the NILs to simulate greenbridge volunteer. A no greenbridge control also was included. NILs from three treatments (RoundUp, Buctril/HarmonyGT, and a no spray control) were evaluated for disease severity as well as agronomic performance.