EFFECTIVENESS OF PHYTOPESTICIDE NEEM AZAL Т/S AGAINST TOMATO LEAF MINER (TUTA ABSOLUTA MEYRICK) IN GREENHOUSE TOMATO

N. Valchev, D. Markova, V. Yankova

Abstract: In recent years tomato leaf miner (Tuta absoluta Meyrick) became one of the most dangerous pests for tomato greenhouse production. The larvae make damages on all aboveground parts of the plant from seedlings production stage to the harvesting. In the period 2011-2012 studies were performed for determination of the effectiveness of the phytopesticide Neem Azal T/S® 0.3% with active ingredient azadirachtin against T. absoluta, in tomato growing variety Velocity under greenhouses. High effectiveness of the product (Е=80.51%) was established 14 days after treatment against early stages of the larvae (L1 and L2) of the pest. Neem Azal Т/S 0.3% shows very good effectiveness (84.10% and 86.61% respectively) both in twofold and threefold treatment in intervals of 7 days against mixed population of larvae 1-4 instars of T. absoluta. The good biological activity of Neem Azal Т/S 0.3% makes possible its including in the integrated and biological systems for control of the pest in tomato greenhouse production.

Keywords: biological activity; botanic insecticides; greenhouse; tomato; Tuta absoluta

Date published: 2017-10-11