valuation of some insecticides and their combinations with mineral oil against Tuta absoluta and the side-effects on tomato plant and fruits

Document Type : Original Article

Authors

Pesticide Chemistry and Technology Dept., Faculty of Agriculture, Alexandria University

10.21608/jpces.2017.459310

Abstract

Tuta absoluta can attack tomato plant at any developmental stage around the year. Thus, the modern integrated pest management recommends effective pesticides that have high efficiency and low side-effects. Therefore, the efficiency of some insecticides and their mixtures with mineral oil was evaluated against tomato leaf miner, T. absoluta under greenhouse conditions. Also, the side-effects of the insecticides on the tomato plant and fruit quality characteristics were evaluated. The results revealed that all the tested treatments decreased the T. absoluta infestation with the following
descending order; imidaclopride > (emamectin benzoate + mineral oil) > (pyridalyl +mineral oil) > (abamectin + mineral oil) > (emamectin benzoate + indoxacarb) >(indoxacarb + mineral oil) > (abamectin + lufenuron) > (Bacillus thuringensis, Bt +mineral oil) > (lufenuron + mineral oil) > (diazinon + mineral oil). The inhibitory effect of treatments on the chlorophyll content was lower than that due to the damage of T. absoluta in control. According to the efficacy of insecticides on tomato leafminer and their effects on the tomato quality, the tested insecticides could be divided into four categories as follows: Excellent (imidacloprid, emamectin + mineral oil, abamectin +mineral oil), good (indoxacarb + mineral oil, emamectin + indoxacarb, abamectin + lufenuron), moderate (pyridalyl + mineral oil, B.t + mineral oil) and fail (diazinon + mineral oil, lufenuron + mineral oil).

Keywords

Journal of Pest Control and Environmental Sciences
Volume 22, Issue 1
2017
Pages 37-47

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