MANAGEMENT OF APHID, LIPAPHIS ERYSIMI (KALTENBACH) (HOMOPTERA: APHIDIDAE) IN CANOLA (BRASSICA NAPUS L.) CROP USING NITROGENOUS FERTILIZERS AND SYNTHETIC INSECTICIDES
DOI:
https://doi.org/10.57041/pjs.v68i1.154Keywords:
nitrogen application, Lipaphis erysimi, aphid, CanolaAbstract
Field experiment was conducted at the farm of Faculty of Agriculture, Gomal
University, Dera Ismail Khan to determine integrated effect of nitrogenous fertilizer and synthetic
insecticides on aphid, Lipaphis erysimi (Kaltenbach) (Homoptera: Aphididae) population in canola
crop during 2010-11. Results showed that tested insecticides significantly reduced aphid population
compared to control. Minimum (8.67aphids) were recorded after 3rd week of treatment with karate 2.5
EC (625ml.ha-1) using medium dose (58kg.ha-1) of nitrogen fertilizer. The same treatment also provided maximum (1246.91kg.ha1) grains yield. It was concluded from the present studies that tested
levels of nitrogen fertilizer had no effect on aphid population, while synthetic insecticides significantly
reduced pest infestation.
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