Skip to main content
ARS Home » Research » Publications at this Location » Publication #94429
Title: INFLUENCE OF TEMPERATURE AND MOISTURE ON CLORANSULAM-METHYL FATE

Author
item CUPPLES, ALISON - UNIV OF ILLINOIS
item SIMS, GERALD

Submitted to: Soil Science Society of America Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 6/12/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Herbicide degradation, and hence efficacy, are often controlled by environmental factors. This study was conducted to ascertain the impact of temperature and moisture on cloransulam-methyl fate. Aerobic soil laboratory experiments were undertaken at 5 temperatures (5, 15, 25, 40 and 51C) and 3 moisture levels (20, 40 and 60% WFPS) for up to 56 days. The highest temperature (51C) resulted in greatest overall microbial activity, depletion from solution phase and bound residue formation. However, maximum emission of 14CO2 occurred at a lower temperature (25C). This suggests that at higher temperatures, degradation of cloransulam methyl favors bound residue formation rather than a pathway that produces CO2. This paper will also discuss the affect of moisture and organic matter on cloransulam-methyl degradation.