Abstract
Field studies were conducted in second-ratoon crops of sugarcane infested with rhizome johnsongrass to determine the effects of aqueous diluent volumes ranging from 47 to 561 L ha-1on the performance of asulam. Trend analyses of johnsongrass recovery, based on panicle numbers late in the growing season, indicated a quadratic response with panicle numbers being lowest when asulam at 2.8 kg ai ha-1was applied in a diluent volume approaching 187 L ha-1. The response was similar regardless of whether droplet size or number was altered to obtain these diluent volumes. Differences in late-season johnsongrass control were reflected in harvested sugarcane stalk populations and net cane yields. In greenhouse studies, johnsongrass plants were thoroughly washed with water 24 h after treatment with asulam at 2.8 kg ha-1at water volumes ranging from 47 to 374 L ha-1. Asulam absorption, as evidenced by reduction in the growth of johnsongrass, was higher when surfactant was included, but was not affected by diluent volumes in the range evaluated.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference22 articles.
1. Bode L. C. 1988. Spray application technology. p. 85–110 in McWhorter C. G. , and Gebhardt M. R. , ed. Methods of Applying Herbicides. Weed Sci. Soc. Am. Monograph Series 4, Champaign, IL.
2. Timing Effects on Johnsongrass (Sorghum halepense) Control with Asulam in Sugarcane (Saccharumsp.)
3. Selectivity factors relative to asulam for Senecio jacobaea L. control in Medicago sativa L. I. Retention, uptake and translocation*
4. Teejet. Spraying Systems Co., North Ave., Wheaton, IL 60188. The use of trade names in this publication does not constitute a guarantee, warranty, or endorsement of the products by the U.S. Dep. Agric.
5. The history and development of sugar yield calculations;Legendre;Proc. Am. Soc. Sugar Cane Technol.,1973
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献