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Effect of Encapsulating Thiocarbamate Herbicides Within Starch for Overcoming Enhanced Degradation in Soils
Author(s) -
Reed Joseph P.,
Hall Franklin R.,
Trimnell Donald
Publication year - 1989
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19890410507
Subject(s) - thiocarbamate , chemistry , thiocarbamates , starch , soil water , environmental chemistry , agronomy , organic chemistry , environmental science , biology , soil science
Abstract Thiocarbamate herbicides were encapsulated within starch xanthate (SX) matrices to provide granules for spray mix applications. The SX granules were compared with microencapsulated (EN) and emulsifiable concentrate (EC) forms of these herbicides in greenhouse and field to determine weed contol in soil having a prior history of thiocarbamate use. The SX encapsulated thiocarbamates controlled over 80% of the weeds in 30 days. Thiocarbamate release from SX was better suited than release from EN for overcoming enhanced degradation in the field. Phytotoxicity of SX formulations was related to loss of the safener R‐25788 (N, N‐ Diallyl‐2,2‐dichloroacetamide) during formulation.