Browsing by Author "Jat, S. L."

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Invasion of fall armyworm (Spodoptera frugiperda) in India: nature, distribution, management and potential impact
(Current Science Association, Bengaluru, 2020) Suby, S.B.; Soujanya, P. Lakshmi; Yadava, Pranjal; Patil, Jagadeesh; Subaharan, K.; Prasad, G. Shyam; Babu, K. Srinivasa; Jat, S. L.; Yathish, K. R.; Vadassery, Jyothilakshmi; Kalia, Vinay K.; Bakthavatsalam, N.; Shekhar, J. C.; Rakshit, Sujay
Fall armyworm (FAW; Spodoptera frugiperda (J. E. Smith)) is emerging as the most destructive pest of maize in India since its report in May 2018. Its rapid spread to more than 90% of maize-growing areas of diverse agro-ecologies of India within a span of 16 months presents a major challenge to smallholder maize farmers, maize-based industry, as well as food and nutritional security. FAW has been reported from other crops as well like sorghum and millets with varied proportion of economic damage. In this review, the transboundary movement of FAW, role of ecology, its spread and damage are discussed. Management of FAW by developing and deploying various pest management tools is elaborated. The role of agroecological measures for reducing FAW damage with African experiences has also been highlighted.
Leaf damage based phenotyping technique and its validation against fall armyworm, Spodoptera frugiperda (J. E. Smith), in maize
(Frontiers Media S.A., 2022) Soujanya, P. Lakshmi; Sekhar, J. C.; Yathish, K. R.; Karjagi, Chikkappa G.; Rao, K. Sankara; Suby, S. B.; Jat, S. L.; Kumar, Bhupender; Kumar, Krishan; Vadassery, Jyothilakshmi; Subaharan, K.; Patil, Jagadish; Kalia, Vinay K.; Dhandapani, A.; Rakshit, Sujay
Globally, maize is an important cereal food crop with the highest production and productivity. Among the biotic constraints that limit the productivity of maize, the recent invasion of fall armyworm (FAW) in India is a concern. The first line of strategy available for FAW management is to evaluate and exploit resistant genotypes for inclusion in an IPM schedule. Screening for resistant maize genotypes against FAW is in its infancy in India, considering its recent occurrence in the country. The present work attempts to optimize screening techniques suited to Indian conditions, which involve the description of leaf damage rating (LDR) by comparing injury levels among maize genotypes and to validate the result obtained from the optimized screening technique by identification of lines potentially resistant to FAW under artificial infestation. Exposure to 20 neonate FAW larvae at the V5 phenological stage coupled with the adoption of LDR on a 1–9 scale aided in preliminary characterize maize genotypes as potentially resistant, moderately resistant, and susceptible. The LDR varies with genotype, neonate counts, and days after infestation. The genotypes, viz., DMRE 63, DML-163-1, CML 71, CML 141, CML 337, CML 346, and wild ancestor Zea mays ssp. parviglumis recorded lower LDR ratings against FAW and can be exploited for resistance breeding in maize.