Cyhalofop-p-butyl mobility and distribution of residues in soil at various depths.
This study was conducted to evaluate cyhalofop-p-butyl mobility in a sandy loam soil and subsequent distribution of residues at various depths under field conditions. Soil samples were taken from 0 to 150 cm depths at 3-90 d after rains in lysemeter of 1 and 2 m depths. Cyhalofop-p-butyl application at two rates and subsequent precipitation had a significant impact on soil, physico-chemical properties and herbicide mobility. Precipitation caused substantial mobility of cyhalofop-p-butyl in the soil and 1.1-7.6 μg L(-1) of cyhalofop-p-butyl was found in leachates. Cyhalofop-p-butyl residues in the leachates were probably due to preferential flow through the soil. Cyhalofop-p-butyl residues were detected in significant amounts from the soil up to 10 d, later, residues were found below the detection limit but its three transformation products viz., cyhalofop acid, diacid, and phenol were detected.
a Department of Soil Science , Jawaharlal Nehru Agricultural University , Jabalpur , Madhya Pradesh , India.
Rishi Raj
RR
Khare
Shobha
S
Sondhia
D002073:Butanes / Q000032:analysis*; D004784:Environmental Monitoring; D006863:Hydrogen-Ion Concentration; D007194:India; D009570:Nitriles / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis*; D053719:Tandem Mass Spectrometry
D002073:Butanes; D009570:Nitriles; D010573:Pesticide Residues; D012989:Soil Pollutants; C501583:cyhalofop-butyl
Cyhalofop‐p‐butyl; lysemeter; mobility; residues; sandy loam soil; transformation products