Hostname: page-component-5d84bcc8dc-qvhhc Total loading time: 0 Render date: 2026-09-14T04:55:12.016Z Has data issue: false hasContentIssue false

Vegetable soybean tolerance to flumioxazin-based treatments for waterhemp control is similar to grain-type soybean

Published online by Cambridge University Press:  23 April 2019

Martin M. Williams II*
Affiliation:
Ecologist, US Department of Agriculture, Agricultural Research Service, Global Change and Photosynthesis Research, Urbana, ILUSA
James L. Moody
Affiliation:
Biological Science Technician (retired), US Department of Agriculture, Agricultural Research Service, Global Change and Photosynthesis Research, Urbana, ILUSA
Nicholas E. Hausman
Affiliation:
Agricultural Science Technician, US Department of Agriculture, Agricultural Research Service, Global Change and Photosynthesis Research, Urbana, ILUSA
*
Author for correspondence: Martin M. Williams II, Email: martin.williams@ars.usda.gov

Abstract

Herbicides registered in vegetable soybean often fail to control waterhemp. The objective of this research was to quantify vegetable soybean tolerance to preemergence herbicides for early-season waterhemp control, including flumioxazin applied alone PRE or in mixture with chlorimuron, metribuzin, or pyroxasulfone at use rates in grain-type soybean. Crop tolerance to the herbicides was tested in field trials with 20 vegetable soybean cultivars and four grain-type cultivars through 4 wk after treatment (WAT). Flumioxazin-based treatments were equally safe, resulting in only minor, transitory crop response (<5% injury 2 WAT) and no effect on crop emergence or early season growth. Flumioxazin mixtures provided greater than 99% control of waterhemp 4 WAT, as evidenced by reduced weed density from 29.7 plants m−2 in the nontreated control to no waterhemp. Flumioxazin applied alone or in tank mixture with chlorimuron, metribuzin, or pyroxasulfone were as safe in vegetable soybean as previously reported in grain-type soybean. Registration of these products in vegetable soybean would provide the industry with additional options for managing waterhemp.

Information

Type
Research Article
Copyright
© Weed Science Society of America, 2019 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable