Population Dynamics of Major Insect Pests of Cucumber
Keywords:Amrasca biguttula biguttula Bactrocera cucurbitae, Liriomyza trifolii, Bemisia tabaci, cucumber, population dynamics, correlation coefficients, peak incidence, temperature, relative humidity
This study on incidence of the jassid Amrasca biguttula biguttula in cucumber reveal that the incidence begins from 10<sup>th</sup> standard meteorological week (SMW) (0.56 jassid/ three leaves) with a peak (2.96 jassids/ three leaves) in the 16<sup>th</sup> SMW. Whitefly Bemisia tabaci appeared during 11<sup>th</sup> SMW (0.80 whiteflies/ three leaves), increasing to a a peak (2.65 whiteflies/ three leaves) during 17<sup>th</sup> SMW. Fruit fly Bactrocera cucurbitae infestation on fruit began from the 13<sup>th</sup> SMW (16.35%), with a maximum (45.03%) during the 17<sup>th</sup> SMW. Leaf miner Liriomyza trifolii infestation started from the 10<sup>th</sup> SMW (0.66%), with leaf damage being maximum (4.45%) at the 15th SMW. Maximum and minimum temperature showed significant and positive correlation with B. cucurbitae infestation, whereas the morning and evening relative humidity had non-significant and positive association.
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