Role of Alternative Insecticides in Integrated Pest Management (IPM) to Certain Sugar Beet Insects

Abstract

Conventional insecticides led to numerous problems, environmental pollution, elimination of insect predators and incidence insect resistance to these insecticides. thus, this field experiment was done at the experimental farm of Sakha Agricultural Research Station, Kafr El-Sheikh Governorate during 2019/2020 and 2020/2021 seasons for evaluating the efficacy of some alternative insecticides against certain sugar beet insects and calculating their side effect on associated insect predators as compared to conventional ones. Alternative insecticides (Raner ® 24% SC, ferto® 5% SC and Methobiet® 24% SC) caused overall mean of reduction in Spodoptera spp. larvae populations with (78.51- 93.78), (80.4- 93.29) and (77.97-92.04%), respectively during the two seasons. In such concern, these insecticides caused reductions in insect predators numbers with (26.55-11.57%), (23.16- 10.84) and (24.0- 11.39%) respectively throughout the two seasons. As, the conventional insecticides (Dora ® 48% EC, Marshal® 20% EC, Diracomel® 90%SP and Pleo ® 5% EC) Caused reductions to these predators population with (98.66 - 96.72), (97.41 - 98.02), (99.38 - 98.68) and (95.59-97.95%) respectively in the two seasons. Concerning the beetfly, pegomyia mixta, alternative insecticide (Gold ® 1.8% EC) caused reductions to this insect larvae numbers with (72.40 and 67.29%), respectively during the two season. Whereas, the same previous insecticide incidence reductions with (34.77 - 40.60%) against insect predators in the two seasons, respectively. On the other hand, conventional insecticides (Ematrade ® 35% SC, Billy ® 25% wG, Flagetara ® 25% WP, Sumithion ® 50% EC, Basudin ® 60% Ec) caused reductions to these predators ranging between (88.13 to 94.877) over the two seasons. Lastly, these alternative insecticides are promising insecticides with high efficacy against sugar beet insects, at the same time less-toxic to predators compared with conventional ones. Consequently, it would be ideal agents for integrated pest management (IPM) to sugar beet insects, especially sugar beet is a food crop.