Hostname: page-component-7b7567c8c-wxvwp Total loading time: 0 Render date: 2026-11-13T22:01:52.774Z Has data issue: false hasContentIssue false

Field Bindweed (Convolvulus arvensis) Control with Fluroxypyr

Published online by Cambridge University Press:  12 June 2017

Robert T. Macdonald
Affiliation:
Dep. Environ. Biol., Univ. Guelph, Guelph, ON, Canada N1G 2W1
J. Christopher Hall
Affiliation:
Dep. Environ. Biol., Univ. Guelph, Guelph, ON, Canada N1G 2W1
James J. O'Toole
Affiliation:
Centralia Coll. Agric. Technol., Guelph, Guelph, ON, Canada N1G 2W1
Clarence J. Swanton
Affiliation:
Dep. Crop Sci. Univ., Guelph, Guelph, ON, Canada N1G 2W1

Abstract

Experiments were conducted under controlled environment and field conditions to evaluate the influence of growth stage and fluroxypyr dosage on control of field bindweed. In controlled environment studies fluroxypyr effectively controlled 8- to 12-leaf field bindweed. Shoot number, length, and dry weight, and root dry weight decreased as herbicide dose increased. The estimated ED50 (effective dose for 50% reduction) values for shoot and root dry weight were 50 and 33 g ai/ha, respectively. The ED50 for shoot length was 98 g ai/ha. Fluroxypyr was applied at rates from 0.2 to 0.4 kg/ha under field conditions to field bindweed at selected stages of growth. Regardless of herbicide dosage, fluroxypyr applied at the late flowering stage of growth controlled field bindweed better than when applied at the bud or early flower stage. Corn grain yield increased as a function of fluroxypyr dose in 1988 but not in 1987. Dry weight of roots and shoots of field bindweed harvested one year after treatment decreased with increasing rates of fluroxypyr. These studies demonstrate the potential of fluroxypyr for the control of field bindweed.

Information

Type
Research
Copyright
Copyright © 1994 by the Weed Science Society of America 

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