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Screening sorghum genotypes to the damage sorghum earhead bug calocoris angustatus lethierry hemiptera miridae



Screening sorghum genotypes to the damage sorghum earhead bug calocoris angustatus lethierry hemiptera miridae



Mysore Journal of Agricultural Sciences 21(4): 446-449



Reaction of 36 kharif and 16 rabi sorghum genotypes to the damage of sorghum earhead bug, Calocoris angustatus Lethierry was tested at the Argicultural College Farm, Dharwad (Karnataka) during 1978 and 1979. The genotypes were screened based on the mean population of bugs per earhead and damage grade index (DGI). Among genotypes screened during kharif 1978, S-GIRL, MR-1 during 1979 were found promising, wheras D-340, SB-1807B, SB-901 and BH-4-1-4 (during 1978), Nandyal IS-84, SB-32B, SB-2612 and SB-461 (during 1979) were found to be highly susceptible and the rest were susceptible. Among 16 genotypes screened during rabi 1978 none promising whereas during 1979, BJ-102 was promising. The genotype CS-3541 during 1978 and SB-401 and AJ-1052-1-1 during 1979 were highly susceptible. The correlation coefficient between bug population and damage grade index was significant in both the screening trails.

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Accession: 007771584

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