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Effects of Soil Properties on EPTC Phytotoxicity

Published online by Cambridge University Press:  12 June 2017

L. S. Jordan  and
B. E. Day
L. S. Jordan
Affiliation:
Department of Horticulture, University of California, Riverside, California
B. E. Day
Affiliation:
Department of Horticulture, University of California, Riverside, California
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Abstract

Oats, sesbania (Sesbania macrocarpa Muhl.) and purple nutsedge (Cyperus rotundus L.) were grown as test plants in nine different soil types treated with 0, 0.5, 1, 2, 4, 8, and 16 ppm of ethyl N,N-di-n-propylthiolcarbamate (EPTC). Toxicity of EPTC was negatively correlated with the organic matter of the soil. A positive correlation was found between the sand and silt content of the soil and EPTC toxicity to oats and nutsedge. Toxicity of EPTC was not correlated with soil pH, cation exchange capacity, clay content, general reaction, or parent material. EPTC induced a dormancy of nutsedge tubers, of which the length was inversely related to the organic content of the soil.

Type
Research Article
Information
Weeds , Volume 10 , Issue 3 , July 1962 , pp. 212 - 215
Copyright
Copyright © 1962 Weed Science Society of America 

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References

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