1 Contribution No. 281/83 from the Division of Plant Physiology and Biochemistry, Indian Institute of Horticultural Research, 255, Upper Palace Orchards, Sadashivanagar,. Bangalore-560 080, India.
Peas detected alachlor residues upto 0.0000–1 ppm in solution culture and blackgram upto 0.001 ppm in soil culture measured in terms of reduced root length within a period of seven days under controlled conditions. Black gram, french beans, peas, okra and maize were tolerant to alachlor at 2.0 kg/ha under field conditions. Bioassav studies with feonugreek showed that alachlor treated at 1.5 and 2.0 kg/ha persisted for 30 days under sandy loam soils (organic matter 0.6%).
