Division of Entomology, ICAR Research Complex for NEH Region, Bishnupur, Shillong-793 013, Meghalaya (India).
*Present Address: Division of Plant Protection, Indian Grassland and Fodder Research Institute, Jhansi-284 003, UP (India).
The spraying of carbaryl (0.1 and 0.2 per cent) gave 99.15 and 118.75 ppm average deposits respectively on the curd of cauliflower which reached below tolerance level of 5 ppm in 21–30 days. The residues persisted beyond 30 days after treatment at 1500 metres, above mean sea level. The half-life values varied from 6.69 to 6.84 days on curd. The residues were also detected on stalk which reached below tolerance level in 5–7 days. The leaves were found to contain the residues which reached below tolerance level in 5–10 days and had half-life for 5–6 days.
