1Department of Plant Breeding, Punjab Agricultural University, Ludhiana-141 004 (India).
2Agricultural Development Officer, C/o Chief Agricultural Officer, Faridkot (Punjab), India.
Studies were conducted on the incidence of maize jassid, Zyginidia manaliensis (Singh) in relation to date of sowing on spring maize fodder crop during 1990. The crop was sown on seven different dates at 10 days interval commencing from 1 March. It was found that the crop sown on 1 March and 10 March had significantly less infested plants (50.9–52.8%) than that grown on 30 March, 10 and 20 April (71.7–86.8%). The maximum plant infestation was witnessed in crop sown on 20 April. The crop sown on 1 and 10 March also carried less jassid population than that in other four dates of sowing. It was the maximum (9.0/3 sweep nets) in 20 March sowing.
