Management of Insect-pests Population in Black Gram with Novel Insecticides and Their Natural Enemies

Management of Insect-pests Population in Black Gram with Novel Insecticides and Their Natural Enemies

A field experiment was performed on Black Gram variety T-9 at Entomology Instructional Farm, JNKVV-College of Agriculture, Rewa (M.P.) during Kharif. In the 2nd week of August, the initiation of white fly infestation was reported and reached a peak level of 10.84 per five leaves in the 2nd week of September when the temperature ranged from 20.6-29.9 ° C & 70-99 percent RH. Correlation coefficient values for white fly occurrence and weather parameters showed that, apart from minimum temperature, maximum and minimum relative humidity had a positive correlation, but maximum temperature and rainfall had a negative correlation with the population of white flies. While the first appearance of the Bihar hairy caterpillar was recorded in the 4th week of August and reached a peak level of 10.44 larvae / mrl in the 4th week of October when the temperature ranged from 15.1-30.7 ° C & 62-96 percent relative humidity. Correlation coefficient values for the incidence and weather parameters of the Bihar hairy caterpillar showed that the maximum The temperature had a positive association and the Bihar hairy caterpillar population had a negative effect on minimum temperature, maximum & minimum relative humidity in addition to rainfall. Test the effectiveness of new insecticide molecules, i.e. Flubendiamide 39.35 percent SC, Indoxacarb 15.8 percent EC, Thiomethoxam 25 percent WG, Triazophos 40 percent EC, Monocrotophos 36 percent SL, Thiacloprid 21.7 percent SC, Chlorantraniliprole 18.5 percent SC and Quinalphos 25 percent EC and the Bihar Hairy Caterpillar, Spilosoma obliqua Walker and White fly, Bemisia tabaci Gennadius untreated control map. Thiacloprid 21.7% SC was considered most powerful against white fly followed by white fly followed by Thiomethoxam 25% WG was found to be most effective against Bihar Hairy Caterpillar, while Chlorantraniliprole 18.5% SC was found most effective. In a plot treated with Chlorantraniliprole 20 g a.i., the highest yield of 1012,3 kg / ha was reported. /ha.-Ha. Natural enemies were reported during the seedling to podding stage of the crop during the Kharif season from the black gramme cultivars, indicating the incidence of eight species of insect pests and six species of natural enemies were observed on the crop under the agro-climatic condition of the region of Vindhaya.

Author (s) Details

Mr. Girish Patidar
College of Agriculture, JNKVV, Rewa (MP), India.

Dr. Akhilesh Kumar
College of Agriculture, JNKVV- KVK, Rewa (MP), India.

Mr. Kapil Soni
College of Agriculture, JNKVV, Rewa (MP), India.

Mr. Ashwin Patel
College of Agriculture, JNKVV, Rewa (MP), India.

Mr. Vivek Tripathi
College of Agriculture, JNKVV, Rewa (MP), India.

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