Studying the efficacy of some insecticides and sporophyte suspension of beauveria bassiana (balsam)‎ vuil. fungus in controlling nymphs and adults of bagrada hilaris (burmeister)‎ (hemiptera: pentatomidae)‎ on radish crop (raphanus sativus l. )‎ in vitro and field

Abstract EN

This study aimed to use the fungal suspension of Beauveria bassiana and the pesticides (Leader and Mospildate) in controlling nymphs and adults of Bagrada hilaris on radish plants.

The study showed the effect of the concentration (1.6 × 105) from the suspension of the B.

bassiana fungus on the nymphs and adults of the insect, where the percentage of mortality amounted to (42.22% and 40.00% ), respectively.

The control showed the effect of different concentrations of Leader and Mosepileted on inhibiting the radial growth of the fungus.

The highest percentage of inhibition amounted to (33.37% ) for Mosepiletid, while the lowest percentage of inhibition amounted to (31.37% ) for Leader.

The study showed the effect of different concentrations of the two pesticides on the mortality of nymphs and adults of the insect in vitro, where the concentration (0.4) has excelled by giving a percentage of mortality amounted to (86.67% , 93.33% ), respectively for Leader and (59.40% , 65.83% ) for Mosepileted.

The concentration of (0.2) for Leader and Mosepileted showed high compatibility with bassiana fungus.

The effect was increased by increasing the concentration of the two pesticides.

As for the effect of the interaction between the two pesticides and the fungus in vitro, the treatment of the two pesticides with the fungus has excelled on the rest of the treatments, causing a percentage of mortality amounted to (93.3% , 9.7% , and 96% ) for nymphs and adults, respectively.

While the interaction between two pesticides and the fungus recorded a percentage of mortality in the pot experiment amounted to (83.3% , 86.7% ) for the nymphs and adults, respectively, and the interaction treatment between the fungus and the two pesticides achieved a percentage of mortality in the field amounted to (76.7% , 83.3% ) for the nymphs and adults, respectively.