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The effects of volume application‐rate on the activity of 2 : 4‐dichlorophenoxyacetic acid and 2‐methyl‐4‐chlorophenoxyacetic acid
Author(s) -
Holly K.
Publication year - 1952
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740030703
Subject(s) - mcpa , chemistry , 2,4 dichlorophenoxyacetic acid , volume (thermodynamics) , chromatography , agronomy , botany , pesticide , biology , thermodynamics , physics
The volume‐rates used in current practice for the application of herbicides to cereals are discussed in relation to the results of field experiments designed to determine the effect of variation in spray volume on the phytotoxicity of 2 : 4‐dichlorophenoxyacetic acid (2,4‐D) and 2‐methyl‐4‐chlorophenoxyacetic acid (MCPA). The results of a preliminary greenhouse‐experiment to determine the effect of such variation in volume on the amount of spray retained by barley and Brassica alba are presented. They indicate that changes in the proportion of spray retained may be of considerable magnitude. The possible effects of volume‐rate on the penetration of 2,4‐D and MCPA into plants and the relation of environmental factors to the problem are discussed. The interpretation of results of field experiments and of experience in terms of such effects as spray retention and penetration is considered.