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Dinitroaniline Herbicides for Weed Control in Peas

Published online by Cambridge University Press:  12 June 2017

R.G. Harvey  and
G.L. Jacques
R.G. Harvey
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
G.L. Jacques
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
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Abstract

Eight substituted dinitroaniline herbicides were studied for relative effectiveness in controlling weeds and for tolerance of peas (Pisum sativum L.). Greenhouse trials comparing 10-5 M herbicide solutions added to washed silica sand indicated that trifluralin (α,α,α-trifluroro-2,6-dinitro-N,N,-dipropyl-p-toluidine) and dinitramine (N4,N4-diethyl-α,α,α-trifluoro-3,5-dinitrotoluene-2,4-diamine) were the most phytotoxic to peas. Field trials conducted over a 3-yr period using 0.84 and 1.68 kg/ha application rates demonstrated that all eight of the herbicides successfully controlled the weeds present. Use of trifluralin resulted in the lowest shelled pea yields at both rates of application. Significant reductions in yield occurred from the 1.68 kg/ha rate of trifluralin in 1973 and 1975 when compared with the untreated checks. While major differences did not occur between the other chemicals, the greatest average pea yields resulted from the use of oryzalin (3,5-dinitro-N4,N4-dipropylsulfanilamide), dinitramine, and fluchloralin [N-(2-chloroethyl)-2,6-dinitro-N-propyl-4-(trifluoromethyl)analine].

Type
Research Article
Information
Weed Science , Volume 25 , Issue 3 , May 1977 , pp. 256 - 259
Copyright
Copyright © 1977 by the Weed Science Society of America 

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References

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