Vol. 7, Issue 1 (2019)
Leaching of pyrazosulfuron-ethyl in a sandy loam soil under natural rains in field lysimeters
Author(s): Shobha Sondhia
Abstract: A study was conducted to determine pyrazosulfuron-ethyl mobility in a sandy loam soil and distribution of its residues at various depths in field lysimeters. Pyrazosulfuron-ethyl was applied at a recommended dose 25 g/ha after onset of rains. Soil samples were taken at 0-225 cm depths after rains on various days. Approximately 1234 mm of rain caused leaching of pyrazosulfuron-ethyl through the soil and resulted in 0.163 mg to 1.64 µg/L of residues in the leachates. Pyrazosulfuron-ethyl residues were detected in significant amount from the soil collected at various depths up to 10 days. A positive correlation was found between amount of rain received at different days and a negative significant correlation of residues with the depth and EC. This study demonstrated higher mobility of pyrazosulfuron-ethyl in sandy loam soil. Results obtained are of interest to improve pyrazosulfuron-ethyl management in soil, and to predict risk of ground water contamination.
Fig. 1: Residues of pyrazosulfuron in soil at various depths in lysemeter of 1m depths
Fig. 2: Residues of pyrazosulfuron in soil at various depths in lysemeter of 2 m depths
Fig. 3: Effect of rainfall on residues in the leachates due to pyrazosulfuron-ethyl application on the surface of lysimeters
Pages: 313-318 | 853 Views 241 Downloads
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How to cite this article:
Shobha Sondhia. Leaching of pyrazosulfuron-ethyl in a sandy loam soil under natural rains in field lysimeters. Int J Chem Stud 2019;7(1):313-318.
