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Estimation of Avoidable Losses in Mungbean Genotypes Evaluated under field conditions during summer against Maruca Vitrata

Author Affiliations

  • 1Department of Entomology, Agricultural College, Bapatla-522 101, Guntur District, Andhra Pradesh, INDIA

Int. Res. J. Biological Sci., Volume 4, Issue (1), Pages 57-54, January,10 (2015)

Abstract

Hundred and ten greengram genotypes screened against M. vitrata during summer, 2009-10 and 2010-11. Among the hundred and ten screened greengram genotypes, avoidable loss was ranged from 1.4 to 83.5 percent and the lowest avoidable losses were recorded in 18 genotypes, which grouped under resistant category and highest avoidable losses in 20 highly susceptible genotypes, where as the remaining 72 genotypes were grouped under moderate category. The genotypes KM-8-666 (83.5%), KM-8-656 (76.9%), KM-9-121 (76%), LGG-497 (75.5%) and LGG-514 (75%) recorded the highest percent avoidable losses, while genotypes MGG-336 (1.4%), KM-8-655 (2.4%), MGG-335 (3.2%), Madhira Mung (7.9%), KARS-165 (8.3%), KM-9-122 (9.0%), Pusa Vishal (9.1%), MGG-295 (10.6%), GG-9 (10.8%) and MGG-353 (11.9%) recorded the lowest avoidable losses. The low yielding greengram genotypes, KARS-22 (25.5), KARS-166 (26.5), Asha (29.0), KM-2241 (41.5), MGG-330 (45.5), MGG-359 (48.0), Line -76 (49.0), BAR-02/22 (49.5), KM-9-136 (51.0), MGG-367 (51.5) under unprotected conditions, became moderate yielders (KARS-22 (56.5), KARS-166 (82.5), Asha (95.5), KM-2241 (110.5), MGG-330 (110), MGG-359 (137.5), Line -76 (185), BAR-02/22 (60.0), KM-9-136 (139), MGG-367 (73.0)) under protected conditions. Similarly, the moderate yielding genotypes, viz., KM-8-666 (70.5) and KM-8-656 (109.5) under unprotected conditions, became high yielders (KM-8-666 (427) and KM-8-656 (473.5)) under protected conditions, this significant yield improvement, might be due to Maruca management. It is concluding that we can avoid 83.5 percent yield losses by choosing resistant varieties and adopting management practices against Maruca.

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