Screening of Genotypes / Cultivars for their Susceptibility against Aphid, Aphis craccivora Koch Infesting Fenugreek
S. M. Goswami *
Department of Entomology, C.P.C.A., S. D. Agricultural University, Sardarkrushinagar, Gujarat, India.
N. P. Pathan
Department of Plant Protection, College of Horticulture, S. D. Agricultural University, Jagudan, Gujarat, India.
N. R. Patel
Seed Spices Research Station, S. D. Agricultural University, Jagudan, Gujarat, India.
*Author to whom correspondence should be addressed.
Abstract
The present investigations were carried out at Seed Spices Research Station, Jagudan Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar during the rabi, 2024- 25. Fenugreek is an important spice and medicinal crop. The aphid A. craccivora is a major insect pest of fenugreek. Fifteen genotypes/ cultivars of fenugreek viz., LSVT-1, LSVT-2, LSVT-5, LSVT-14, LSVT-10, CVT-2, IET-7, CVT-1, GM 3, CVT-12, IET-2, GM 2, IET-1, CVT-13 and CVT-14 were screened for their relative susceptibility against aphid, Aphis craccivora Koch in fenugreek by using the aphid index scale. The genotypes LSVT-1 (0.60 A.I.), LSVT-2 (0.70 A.I.) and LSVT-5 (1.01 A.I.) were categorized as resistant genotypes. The genotypes LSVT-14 (1.20 A.I.), LSVT-10 (1.30 A.I.) and CVT-2 (1.41 A.I.) were moderately resistant. The genotypes CVT-13 (2.52 A.I.) and CVT-14 (2.64 A.I.) were categorized under susceptible. The highest yield (18.35 q/ha) recorded from the genotype LSVT-1.
Keywords: Aphis craccivora, genotypes, cultivars and categorization