B. DEBASREE*, M. RAJASRI, K. DEVAKI AND D. MOHAN REDDY

Department of Entomology, S.V. Agricultural College, ANGRAU, Tirupati-517 502.

ABSTRACT

Field screening of forty seven black gram (Vigna mungo L.) genotypes against spotted pod borer, Maruca vitrata was carried out during late rabi, 2023-24 under field conditions at S.V. Agricultural College, Tirupati, Andhra Pradesh. The genotypes were categorized based on the per cent pod damage and were converted to Pest Resistance Rating (PRR) scale for all the genotypes. Among the 47 genotypes, 17 genotypes exhibited highly resistant reaction with PRR scale 2, whereas, 19 genotypes recorded resistance to pod borer damage. Nine genotypes were categorized as moderately resistant and one genotype was recorded as tolerant. The maximum pod damage was found in LBG 961 (8.24%) and significantly least pod damage was recorded in GBG 269 (0.57%).

KEYWORDS: Blackgram, Screening, Maruca vitrata, Pest Resistance Rating, Pod damage.