Abstract
In the last ten years, whitefly has presented a serious risk to vegetables most commonly the tomatoes and natural products in the field. Another significant issue is associated with the pest management control system and insect preferences for the tomato plants. In these lines we investigate Predatory efficiency capability and capacity of Chrysoperla carnea with whitefly Bemisia tabaci in a greenhouse were study at Hyderabad, Pakistan. Larvae of Chrysoperla carnea were used against whitefly in a greenhouse. Adult, eggs and nymph of Bemisia tabaci is affected by Chrysoperla carnea. In this experiment used different numbers of larvae is attached to tomatoes plants to measure the efficiency of Chrysoperla carnea larvae. The overall mean population of whitefly indicates positive correlation with the number of larvae introduced. Highest overall mean whitefly population is observed in Un-Treated (13.11±1.614) and (4.012±0.804), the lowest count found in 10larvae/plant (7.400±0.904) and (1.363±0.561) for adult and nymph respectively. Up to 50% mortality is observed as compared to untreated plants. During this experiment, a strong negative correlation is observed between Chrysoperla carnea applied/plant and whitefly population (-0.808) and (-0.978) in adult and nymph respectively. Data also clearly showed decreased from start and after introduced Chrysoperla carnea larvae to tomato plants. Keywords: Chrysoperla carnea; Bemisia tabaci; larvae; mortality; tomato http://dx.doi.org/10.19045/bspab.2020.90227
Highlights
Introduction amongst the most imperative vegetableThe tomato, Lycopersicum Escolentum Mill, products developed for its beefy leafy foods is a vital and generally utilized vegetable as vital business and dietary vegetable yield.yield
The natural control by the utilization of predator Chrysoperla carnea has likewise picked up significance for pest administration in Pakistan
Some current examinations give a pivotal case of discharge locales for lacewings against Bemisia tabaci (Genn.) in cotton
Summary
The tomato, Lycopersicum Escolentum Mill, products developed for its beefy leafy foods is a vital and generally utilized vegetable as vital business and dietary vegetable yield. Observations Tomatoes plants pots are placed in Complete Randomized Design in a greenhouse, 5plats/treatment. The number of Chrysoperla carnea larvae applied to the per plant was strongly negative correlation r-value (-0.808) to whitefly population (Fig. 2). Lowest count observed in T1= (10 larvae/plant) with (1.363±0.561) and highest overall mean population was observed in untreated (4.012±0.804) (Table 2). Very strong negative correlation r-value (-0.978) is observed in between Chrysoperla carnea applied and whitefly nymph (Fig. 2). Information information recorded an increase in recommended that high numbers of population density of Bemisia tabaci in the Chrysoperla carnea released to expand the untreated plot. In all treatment just one negative pursuing that in all experiment in start number of recorded which demonstrated expanded in whitefly is high and decreased at the end population density of whitefly in T6=un-.
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