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COMPARATIVE STUDY OF INTEGRATED PEST MANAGEMENT AND FARMER’S STANDARD PRACTICES FOR CONTROLLING CHRYSANTHEMUM THRIPS UNDER PLASTIC HOUSE
Thrips is an important worldwide cause of severe damage to various hostplants, especially chrysanthemums. Current management still relieson synthetic insecticides to control thrips. However, these pesticidesharm the environment and promote thrips resistance. The study aimedto compare integrated pest management (IPM) and farmer’s standardpractices to control Thrips parvispinus on two chrysanthemum varietiesand calculate the cost-benefit ratio of both pest control practices. Twochrysanthemum cultivars were planted in plastic houses to compare IPMand farmer’s standard practices. The observed variables included thripsdensity, attack and damage rates, cut flower yield, and natural enemiesabundance. Data were analyzed using ANOVA, and Tukey’s HSD testidentified significant differences at a 5% level. The results showed thatthe population of T. parvispinus nymphs was higher (78%) than adults.The highest adult thrips population emerges when chrysanthemumsachieve the flowering phases. This study reveals that the control effectsof IPM were not different from farmer’s standard practices. A holisticapproach integrating several management strategies successfullycontrolled the thrips population while producing high-quality crops withminimal aesthetic damage. The IPM strategy against thrips showeda competitive cost and reduced synthetic insecticide applicationswithout decreasing the quality and productivity of chrysanthemums.
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