Late-Season Grass Weed Management with In-Crop and Post-Harvest Herbicides in Twin-Row Glyphosate-Resistant Soybean
Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53457#.VMW11izQrzE Author(s) Krishna N. Reddy , Charles T. Bryson , Vijay K. Nandula Affiliation(s) Crop Production Systems Research Unit, USDA-ARS, Stoneville, Mississippi, USA . ABSTRACT Emergence of grasses late in the season has become a problem in glyphosate-resistant (GR) soybean production in the southern US. A 3-yr field study was conducted from 2011 to 2013 at Stoneville, MS to determine efficacy of post-harvest and pyroxasulfone-based in-crop herbicides on late-season grasses and yield in twin-row glyphosate-resistant soybean. Experiments were conducted in a split-plot arrangement of treatments in a randomized complete block design with fall herbicides (with and without pendimethalin at 1.12 kg ai ha -1 and paraquatat 0.84 kg ai ha -1 ) as main plots and in-crop herbicides as subplots with four replications. The six in-crop herbici...