Screening of Pigeonpea [Cajanus cajan (L.) Millsp.] Against Tur Pod Bug, Clavigralla gibbosa (Spinola) in Long Duration Pigeonpea Genotypes
The pigeonpea was infested with the number of insect pests at various stage of crop growth. Out of which the incidence pattern of C. gibbosa was studied. The result of the investigation pertaining to the “Screening of pigeonpea [Cajanus cajan (L.) Millsp.] against Tur Pod bug, Clavigralla gibbosa (Spinola) in long duration Pigeonpea genotypes” was carried out in 2018-19 at the Agricultural Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi. This insect was studied during reproductive phase of the crop during 2018-19. The very first presence of pod bug, [C. gibbosa (spinola)] was reported in all genotypes with a maximum population of (1.13 bug/plant) in the MAL-13 (AVT1) genotype in the 4th standard week pursued in the first week by AVT1-706 (1.06 bug/plant), AVT1-705 (1.03 bug/plant) in first week. Pod Bug population continued between the 4th standard Week of 2018-19. Throughout all genotypes, that 12th standard week Pod bug populations had been reported to also be especially high mostly during 12th standard week for nearly every genotypes. MAL-13 (AVT1) genotypes, accompanied by AVT1-704, would have the highest percentage of 10.55 bugs/plant, as well as 9.62 bugs/plant populations. In genotypes AVT1-707 (4.96 bug/plant), the lowest population of pod bugs was found. AVT2 - 903 (5.02 bug/plant), and AVT1-703 (5.17 bugs/plant) during the 10th standard week. The mean pod bug population was substantially different in different genotypes and ranged from AVT1-708 (1.72 bugs/plant) to MAL 13(AVT1) (3.77 bugs/plant). . Its degree of damage in cultivar AVT2-904 ranged from 27.33% to 51.00% in cultivar AVT1-703. The grain loss in genotype AVT2-904 ranged from 12.68% to 30.52% in genotype AVT2-907.
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