Efficacy and Rate of Release of EPTC and Butylate from Starch Encapsulated Formulations Under Greenhouse Conditions
| Autor: | M. A. Ross, D. W. Edgecomb, P. L. Orwick, B. S. Shasha, M. M. Schreiber |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
0106 biological sciences
Chromatography Chemistry Starch Greenhouse 04 agricultural and veterinary sciences Plant Science 01 natural sciences Controlled release Starch xanthate 010602 entomology chemistry.chemical_compound Soil water 040103 agronomy & agriculture Residual activity 0401 agriculture forestry and fisheries Bioassay Seeding Agronomy and Crop Science |
| Zdroj: | Weed Science. 26:679-686 |
| ISSN: | 1550-2759 0043-1745 |
| Popis: | Four starch-encapsulated formulations of EPTC(S-ethyl dipropylthiocarbamate) and of butylate(S-ethyl diisobutylthiocarbamate) were prepared and evaluated by comparison with their respective emulsifiable concentrate formulations for their slow-release capabilities and efficacies. Chemical and biological evaluation indicated that difference in controlled-release could be achieved by the selection of the starch xanthate and oxidant used in the formualtion process. EPTC and butylate released slower when formulated as starch-encapsulated granules than when formulated as emulsifiable concentrates under soil conditions that favored rapid release. The initial release was adequate for weed control and slow enough for desired residual activity. Repeated seeding and harvesting the treated soils and bioassays of treated soils generally produced release rate anticipated from short term dry and wet chemical tests. |
| Databáze: | OpenAIRE |
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