| Abstrakt: |
Of eleven alternative products used to suppress and destroy cotton stalks, four contained LV 2,4-D formulations and seven included no 2,4-D. Although unlabeled for stalk destruction use, triclopyr, fluroxypyr, clopyralid, pyraflufenethyl, glufosinate-ammonium were evaluated for stalk destruction near urban areas using a full rate immediately following shredding and the one-half rate four weeks later. When compared with the standard practice of 1 qt/A 2,4- D amine immediately following shredding and a subsequent 1 pt/A 2,4-D amine treatment 3-4 weeks later, stalk destruction was complete with all products used except pyraflufen-ethyl (ET) and glufosinate-ammonium (Liberty). No volatilization or drift was observed. The rates of triclopyr, fluroxpyr and clopyralid were estimated to have been excessive for destroying cotton stalks, and further work is planned to reduce application costs. This rates used in 2004 resulted in only triclopyr + fluroxypry (PastureGard) being economically competitive with the costs of 2,4-D treatments. [ABSTRACT FROM AUTHOR] |
