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Fluridone for Annual Weed Control in Western Irrigated Cotton (Gossypium Hirsutum)

Published online by Cambridge University Press:  12 June 2017

John H. Miller  and
Charles H. Carter
John H. Miller
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Shafter, CA 93263
Charles H. Carter
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Shafter, CA 93263
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Abstract

For 3 yr, fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl)phenyl]-4(1H)-pyridinone} at 0.1, 0.2, and 0.3 kg/ha, was applied with or without 0.6 kg/ha of trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) before the preplanting irrigation for cotton (Gossypium hirsutum L.). Without trifluralin, fluridone at 0.1 kg/ha controlled less than 60% of annual grasses or redroot pigweed (Amaranthus retroflexus L.), but the 0.3-kg/ha rate controlled 90%. With trifluralin, fluridone at all rates controlled 98% of these weeds. Fluridone alone controlled 85% or more of black nightshade (Solanum nigrum L.). Fluridone did not alter cotton stand or yield. Fluridone residues 8 months after treatment reduced growth of several crops and weeds by 75% or more.

Keywords

Soil incorporationherbicide persistence
Type
Research Article
Information
Weed Science , Volume 31 , Issue 3 , May 1983 , pp. 290 - 293
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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