University of California

Toxicity of 2,4-D in California soils


A. S. Crafts

Author Affiliations

A. S. Crafts was Professor of Botany and Botanist in the Experiment Station.

Publication Information

Hilgardia 19(5):141-158. DOI:10.3733/hilg.v19n05p141. April 1949.

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Tests on several agriculturally important soils show that under California conditions 2,4-D retained in the soil after spraying may injure subsequent crops unless special measures are taken to supplement natural leaching and decomposition. Once decomposition occurs, crop growth is noticeably stimulated. Spraying gives more satisfactory selective control of weeds than direct application of 2,4-D to the soil. Current studies show the chemical to be practical for brush control and range improvement. Its use as a permanent soil sterilant is not recommended.

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Crafts A. 1949. Toxicity of 2,4-D in California soils. Hilgardia 19(5):141-158. DOI:10.3733/hilg.v19n05p141
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