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Phytotoxic Pesticide Interactions in Soil
Author(s) -
Nash R. G.
Publication year - 1967
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1967.00021962005900030006x
Subject(s) - phorate , bioassay , phytotoxicity , captan , pesticide , carbaryl , chemistry , metribuzin , agronomy , biology , weed control , ecology
Phytotoxic interactions resulting from pesticide combinations in soil and bioassay techniques for determination of such phytotoxic effects were investigated. A combination of dalapon with Di‐Syston, phorate, or carbaryl in soil resulted in additive phytotoxic effects. Diuron combined with Di‐Syston, phorate, or carbaryl produced synergistic phytotoxic effects. Captan combined with dalapon gave an independent effect, while chloranil was antagonistic toward the herbicidal activity of diuron. Dry rather than fresh weights were a more precise measurement of phytotoxic effects. Identification of phytotoxic interactions was not affected by growth durations of 3 or 5 weeks when oats were the bioassay plant. Combinations of more than two pesticides in soil usually did not result in third order interactions.