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Effects of Some Formulations of Methyl Parathion, Toxaphene and DDT on the Cotton Plant 1
Author(s) -
Roark Bruce,
Pfrimmer T. R.,
Merkl M. E.
Publication year - 1963
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1963.0011183x000300040017x
Subject(s) - toxaphene , library science , biology , citation , division (mathematics) , agricultural experiment station , agriculture , pesticide , ecology , mathematics , computer science , arithmetic
A/T E. MERKL observed in 1954 that differences in -!•"-•-• maturity of cotton plants were related to the kind of insecticide used for insect control but that observed differences in plant behavior were not related to differences in insect activity. This suggested that one or more of the insecticides had some direct action on the cotton plant. Similar reports were received from farmers, from other research and extension workers, and from representatives of the agricultural chemical industry. In 1959 and I960 replicated field experiments were conducted to determine whether certain commercial formulations of methyl parathion (0,0-dimethyl O-/?-nitrophenyl phosphorothioate), toxaphene (chlorinated camphene conta in ing 67-69% chlo r ine ) , and DDT (l,l,l-trichloro-2,2-bis(/>-chlorophenyl) ethane) have direct action on the metabolism of the cotton plant. Preliminary reports of this research have been given elsewhere.'