Publications by authors named "Vince M Davis"
Background: Controversy has surrounded atrazine owing to its susceptibility to leaching and run-off, with regular calls for a ban or restrictions on its use. In the context of a decreasing trend in the percentage of US maize using no-till since 2008, coinciding with the trend of glyphosate-resistant weeds becoming problematic in the Midwestern United States, we empirically examine how atrazine use restrictions have impacted the diversity of weed management practices used by Wisconsin maize farmers.
Results: Using survey data from farms inside and outside atrazine prohibition areas, we found that prohibiting atrazine did not directly impact tillage practices, but rather it increased the adoption of herbicide-resistant seed, which then increased adoption of conservation tillage systems.
Article Synopsis
- Sudden death syndrome (SDS) in soybeans, caused by Fusarium virguliforme, is a major disease affecting yields, and the study aimed to assess glyphosate's impact on SDS severity, yield, and plant nutrition.
- Conducted across 14 locations in the Midwest and Canada from 2011 to 2013, the research found notable variations in SDS severity linked to irrigation, but glyphosate treatments did not significantly affect disease or yield outcomes compared to other herbicides.
- Overall, the study concluded that glyphosate application did not worsen SDS severity or lower soybean yields, and its interaction with nutrients in plant tissue was unclear.
Background: Horseweed is a weed commonly found in agronomic crops, waste areas and roadsides. Resistance to ALS-inhibiting herbicides in horseweed was first reported in 1993 in a population from Israel. Resistance to ALS-inhibiting herbicides in horseweed is now widespread, but, as of now, the resistance mechanism has not been reported.
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