Premium
Effects of Seed Treatment with Fungicides and Systemic Insecticides on Stand of Cotton 1
Author(s) -
Minton E. B.
Publication year - 1972
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/cropsci1972.0011183x001200010032x
Subject(s) - fungicide , chlorothalonil , captan , seed treatment , biology , malvaceae , thiram , seedling , horticulture , agronomy , germination
In 1967 the insecticide, 0,0,diethyl‐S‐2‐ [(ethylthio) ethyl] phosphorodithioate (disulfoton), did not affect cotton ( Gossypium hirsutum L.) seedling stands when used with the fungicide combinations of tetrachloroisophthalonitrite (chlorothalonil) + p‐dimethylaminobenzenediazo sodium sulfonate (Dexon 3 ) + 1,4‐dichloro‐2,5‐ dimethoxybenzene (chloroneb). However, it caused a slight reduction of the stand when used with chlorothalonil + N‐(trichloromethylthio)‐4‐cyclohexene‐l,2‐dicarboximide (captan), as compared to seed treated only with fungicides. In another test, stands from acid‐delinted seeds were not affected differentially by combination seed treatments of pentachloronitrobenzene + 3‐trichloromethyl‐5‐ethoxy‐l,2,4‐thiadiazole (formulated as Terracoat L21 3 ) and any of the systemic insecticides tested. However, stands from machine‐delinted seeds were lower consistently with the combined fungicide‐insecticide treatments, as compared to the fungicide treatment alone. In 1968 stands were increased by seed treatment with Terracoat L21 + disulfoton, or by the multiple‐fungicide treatment of Terracoat L21 + methyl mercury‐2,3‐dihydroxy propyl mercaptide and methyl mercury acetate (Ceresan L 3 ), as compared to seeds treated with only Terracoat L21. When an emulsifiable formulation of Terracoat L21, as compared to the oil‐base seed treatment formulation, was used for seed treatment purposes, stands from the combination treatments were reduced.