Author:
Holloway James C.,Shaw David R.
Abstract
Ivyleaf morningglory weed-free period, weedy period, and density studies were conducted in 1993 and 1994 to determine the effects of soil-applied imazaquin and chlorimuron plus metribuzin on ivyleaf morningglory interference in soybean. A weed-free period of 4 wk was needed to maintain soybean yield equivalent to weed-free season long when herbicides were not used, but treatment with either chlorimuron plus metribuzin or imazaquin maintained yield comparable to weed-free at all intervals. Ivyleaf morningglory biomass was reduced by both herbicides across all weed-free periods. The period nontreated ivyleaf morningglory plants were tolerated without yield loss was only 2 wk, but this interval was extended to 8 wk after treatment with chlorimuron plus metribuzin or imazaquin. Without herbicides, soybean yield was reduced by four ivyleaf morningglory per m of row, but the highest population evaluated in this study (eight per m of row) did not reduce soybean yield after treatment with chlorimuron plus metribuzin or imazaquin. Ivyleaf morningglory biomass was reduced at all densities after treatment with either herbicide.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference34 articles.
1. Fehr W. R. and Caviness C. E. 1977. Stages of soybean development. Iowa Coop. Ext. Ser. Special report 80.
2. Metribuzin and Chlorimuron Mixtures for Preemergence Broadleaf Weed Control in Soybeans,Glycine max
3. Field competition between tall morningglory and soybean;Scott;II. Development and distribution of root system. Weed Sci.,1976
4. Effects of preemergence herbicides on the competitiveness of selected weeds;Adcock;Weed Sci.,1991
5. Effect of row spacing on weed control in soybeans;Wax;Weed Sci.,1968
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