Abstract
The selectivity of {2-[4-(2′,4′-dichlorophenoxy) phenoxy] methyl propionate}, (hereinafter referred to as dichlofop methyl), among wheat (Triticum aestivumL. ‘Neepawa’), barley (Hordeum vulgareL. ‘Bonanza’), wild oat (Avena fatuaL.), and green foxtail (Setaria viridis(L.) Beauv.) was investigated. On an ED50basis, barley, wild oat, and green foxtail were 2, 190, and 1,090 times more sensitive, respectively, to foliar-applied dichlofop methyl at the two-leaf stage than was wheat. Selectivity decreased with increasing maturity of the plant material with the ratio of selectivity between barley and wild oat decreasing from 55 at the two-leaf stage to three at the four-leaf-plus-one-tiller stage. Greater spray retention and more rapid penetration of dichlofop methyl partially explained the susceptibility of green foxtail, but did not explain selectivity between wheat, wild oat, and barley. Root uptake of14C-dichlofop methyl by the four species was proportional to the amount of solution absorbed during the treatment period and to the concentration of dichlofop methyl in the treatment solution but was not related to species sensitivity to this herbicide.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference11 articles.
1. Studies in the Principles of Phytotoxicity
2. Studies in the Principles of Phytotoxicity
3. Selectivity of nitrofen among rape, redroot pigweed, and green foxtail;Hawton;Weed Sci.,1971
4. Owino M.G. , Todd B.C. , and Stobbe E.H. 1975. Control of wild oats in barley with HOE 23408, barban, and difenzoquat. Can. Weed Comm. Res. Rept., West. Sect. p. 42.
5. Owino M.G. , Todd B.G. , and Stobbe E.H. 1975. Control of wild oats and green foxtail in wheat by HOE 23408, benzoylprop ethyl, and barban. Can. Weed Comm. Res. Rept., West. Sect. p. 516.
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