Vol. 7, Issue 5 (2019)
Field screening of medium duration pigeonpea cultivars against pod borers
Author(s): M Sreekanth, S Rajamani and MV Ramana
Abstract: Among different germplasm lines screened, none of the genotype showed resistance to H. armigera. The genotypes, LRG 120, LRG 119, LRG 116, LRG 86, LRG 61 and LRG 52 showed moderate resistance with pod damage ranging from 16.8 to 21.4% to M. vitrata. Similarly, the genotypes, LRG 121, LRG 108, LRG 104, LRG 61 and LRG 52 showed moderate resistance with pod damage ranging from 16.9 to 21.2% to M. obtusa. Overall, the two entries viz., LRG 61 and LRG 52 were moderately resistant to both Maruca and Melanagromyza. However, LRG 104, LRG 52 and LRG 41 with 1570, 1500 and 1500 kg/ha, respectively were highly productive. Similarly, under advanced varietal trial, the genotypes, LRG 52 (4.5%), WRG 181 (5.3%) and RVSA 34 (5.5%) were categorized as moderately susceptible to gram pod borer, Helicoverpa armigera with pest susceptibility rating (PSR) of 5 and 6; and the genotypes, SKNP 224 (14.4%), WRG 79 (14.8%) and SKNP 207 (15.2%) were categorized as moderately resistant to spotted pod borer, Maruca vitrata with PSR of 4. The pod damage due to pod fly, Melanagromyza obtusa ranges from 11.8% (SKNP 207) to 35.5% (RVSA 81) and were categorized from moderately susceptible to highly susceptible with PSR ranging from 5 to 9. The local check, LRG 41 has recorded highest yield (1611.0 kg/ha), followed by WRG 181 (1556.0 kg/ha).
Pages: 2156-2158 | 215 Views 42 Downloads
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How to cite this article:
M Sreekanth, S Rajamani, MV Ramana. Field screening of medium duration pigeonpea cultivars against pod borers. Int J Chem Stud 2019;7(5):2156-2158.
