EVALUATION THE EFFECT OF BACILLUS THURINGIENSIS, PHYTOMAX®, MATCH® AND MOVENTO® ON MORTALITY PERCENTAGE OF SCHIZAPHIS GRAMINUM IN VITRO AND FIELD CONDITIONS

Farmers around the world still rely on pesticides as a defensive wall against pests, especially arthropods like insects, that may remarkably damage their crops. this current study was aimed to evaluate the effect of Bacillus thuringiensis, Phytomax®, Match® and Movento® on mortality percentage of Schizaphis graminum under laboratory and field conditions. In vitro, a series of experiments was conducted to estimate the effectiveness of B. thuringiensis, Phytomax®, Match® and Movento® on mortality percentage of immature and mature stages of Schizaphis graminum. The recommended dose was used for each chemical Phytomax® and Movento® were shown to be the most effective treatment in suppressing wheat aphid population. Phytomax was able to increase the mortality rate of immature stages from (64.73 ± SD) in the first nymphal instar to (72.31 ± SD and 78.10 ± SD) in the second and third nymphal instars, respectively. Additionally, Phytomax® showed considerable mortality on the first nymphal stage under the field condition, reaching a complete mortality rate after two weeks of exposure. More research is required to uncover the effect of phtomax and the other treatment on the mortality of second, third and the adult stages of the wheat aphid under field conditions.