SYNERGISTIC EFFECT OF INSECTICIDE-BOTANICAL MIXTURES ON CITRUS LEAF MINER, Phyllocnistis citrella Stainton

P. D. KAMALA JAYANTHI, ABRAHAM VERGHESE

Abstract


Efficacy ofncem seed kernel extract individually and in combination with
synthetic pyrethroid, cypermethrin in ditTerent ratios (half the recommended dose and standard full dose) were evaluated experimentally on citrus leaf miner, Phyllocnistis cifrella Stainton on acid lime (Citrus Guranfijolia (Christon) Swing) during 2002 - 2003 at Indian Institute of Horticultural Research, Bangalorc, India. Observations were made on the number oflive mines, dead mines, adult emergence and leaf damage. The results clearly showed that the combination treatment viz., neem seed kernel extract 4%+ cypermethrin 0.5 mlll (full dose) was found to be the best combination to manage P citrella infestation with minimum leaf damage. FUl1her, this treatment also recorded minimal fresh infestation, high larval mortality and low adult emergence. The present work shows the strong synergistic effect of the neem seed kemel extract with cypermethrin to minimize the leaf miner damage.


Keywords


Botanicals; citrus; Phyllocllistis cifrella; synthetic pyrethroid

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