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Slow-Release Delivery System for Herbicides in Container-Grown Stock

Published online by Cambridge University Press:  12 June 2017

Stanley F. Gorski
Stanley F. Gorski*
Affiliation:
Dep. Hortic., The Ohio State Univ., Columbus, OH 43210
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Abstract

Metolachlor, applied to the surface of leaching columns as dicalcium phosphate tablets, was recovered over a period of 25 d compared with 2 and 3 d for emulsifiable concentrate and granular formulations, respectively. In similar studies, approximately 27% of napropamide was recovered from tablets during the same period. Adding an adjuvant to the napropamide tablet mixture increased the recovery rate to 55%. Tablet hardness and size had little effect on the release rate of napropamide. Tablets containing 4% ai napropamide released greater amounts of herbicide at a single collection period than did tablets containing 1% ai. Adding an adjuvant to the napropamide tablet mixture significantly improved Italian ryegrass control in the area adjacent to herbicide placement.

Keywords

Metolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl) acetamidenapropamide, N,N-diethyl-2-(1-naphthalenyloxy) propanamidedicalcium phosphate, Ca2HPO4Italian ryegrass, Lolium multiflorum Lam. # LOLMUContainer weed controlmetolachlornapropamideLolium multiflorumLOLMU
Type
Research
Information
Weed Technology , Volume 7 , Issue 4 , December 1993 , pp. 894 - 899
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

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