WEED-CONTROL WITH REDUCED RATES OF CHLORIMURON PLUS METRIBUZIN AND IMAZETHAPYR IN NO-TILL NARROW-ROW SOYBEAN (GLYCINE-MAX)

Citation
Wg. Johnson et al., WEED-CONTROL WITH REDUCED RATES OF CHLORIMURON PLUS METRIBUZIN AND IMAZETHAPYR IN NO-TILL NARROW-ROW SOYBEAN (GLYCINE-MAX), Weed technology, 12(1), 1998, pp. 32-36
Citations number
21
Categorie Soggetti
Agriculture,"Plant Sciences
Journal title
ISSN journal
0890037X
Volume
12
Issue
1
Year of publication
1998
Pages
32 - 36
Database
ISI
SICI code
0890-037X(1998)12:1<32:WWRROC>2.0.ZU;2-U
Abstract
Field studies were conducted at three locations in 1993 and 1994 to ev aluate weed control and crop response to combinations of glyphosate, m etolachlor, 0.5 x and 1 x label rates of chlorimuron plus metribuzin a pplied prior Co planting (PP), and 0.5 x and 1 x label rates of imazet hapyr applied early postemergence (EPOST) or postemergence (POST) in n o-till narrow-row soybean production, Giant foxtail densities were red uced with sequential PP followed by (fb) EPOST or POST treatments, Lar ge crabgrass nias reduced equivalently with all herbicide combinations involving chlorimuron plus metribuzin PP fb imazethapyr, Common cockl ebur control was variable but was usually greater with treatments that included imazethapyr. Ivyleaf morningglory densities were not reduced with any herbicide combinations. Sequential PP fb EPOST or POST treat ments tended to provide slightly better weed suppression than PP-only treatments, but the difference was rarely significant. Soybean yields with treatments utilizing 0.5 x rates were usually equal to 1 x rates.