Residues and Persistence of Glyphosate in Irrigation Water
| Autor: | V. F. Bruns, A. D. Kelley, R. D. Comes |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
0106 biological sciences
Soil test 04 agricultural and veterinary sciences Plant Science 01 natural sciences Irrigation water Persistence (computer science) 010602 entomology chemistry.chemical_compound Animal science chemistry Single site Glyphosate Glycine 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Aminomethylphosphonic acid Agronomy and Crop Science After treatment |
| Zdroj: | Weed Science. 24:47-50 |
| ISSN: | 1550-2759 0043-1745 |
| DOI: | 10.1017/s0043174500065395 |
| Popis: | Neither glyphosate [N-(phosphonomethyl)glycine] nor the soil metabolite aminomethylphosphonic acid were detected in the first flow of water through two canals following application of glyphosate at 5.6 kg/ha to ditchbanks when the canals were dry. Soil samples collected the day before canals were filled (about 23 weeks after treatment) contained about 0.35 ppm glyphosate and 0.78 ppm aminomethylphosphonic acid in the 0 to 10-cm layer. When glyphosate was metered into the water at a rate calculated to provide 150 ppb in the canal water at a single site on two flowing canals, about 70% of the glyphosate was accounted for 1.6 km downstream from the application site. Thereafter, the rate of disappearance diminished, and about 58% of the applied glyphosate was present at the end of the canals 8 or 14.4 km downstream from the introduction sites. |
| Databáze: | OpenAIRE |
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