Browsing by Author "Hidangmayum Lembisana Devi"

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Bioefficacy, environmental safety and synergistic impacts of biorational formulations against whitefly, leafhopper and blister beetle in organic okra ecosystem
(Cambridge University Press, 2021) Satyapriya Singh; Gulab Singh Yadav; Anup Das; Biswajit Das; Hidangmayum Lembisana Devi; Mahadevan Raghuraman; Amit Kumar
Whitefly (Bemisia tabaci Gennadius), leafhopper (Amrasca biguttula biguttula Ishida) and large yellow-banded blister beetle (Mylabris phalerata) cause considerable damage to okra, especially under organic farming. Thus, the present study was carried out to test the bioefficacy and environmental safety of six naturally derived components [indigenous water plant extracts, i.e. chilli (Capsicum annum), garlic (Allium sativum L.) and neem (Azadirachta indica A. Juss.) along with cow urine in three different combinations, one commercial botanical (azadirachtin 0.15%), and two formulated entomopathogenic fungi (Verticillium lecanii and Beauveria bassiana)] on aforesaid pests for two consecutive years at field scale. In addition to this, the eco-toxicological effect of naturally derived components was also studied on natural enemies' populations, viz. spiders and coccinellids. Quaternary mixture application of chilli, garlic, neem leaf and cow urine (CGNC) at 10% w/v was found effective in reducing leafhoppers (94.6%), whiteflies (95.2%) and blister beetle (94.6%) over control. Okra treated with CGNC produced a higher marketable fruit yield (18.44 mg/ha) than those of other treatments. It was also observed that the application of CGNC had no phytotoxic symptoms on okra plants. Application of CGNC was found safer to the natural enemy's population (spiders and coccinellids). Thus, the study suggests that CGNC can be considered as a potential source for managing the population of whitefly, leafhopper and blister beetle without affecting the ecology of natural enemies and it could be a viable eco-friendly option in organic okra production for ensuring food safety and healthy environment. Copyright © The Author(s), 2021. Published by Cambridge University Press.
Occurrence, Distribution, Damage Potential, and Farmers’ Perception on Fall Armyworm, Spodoptera frugiperda (J.E. Smith): Evidence from the Eastern Himalayan Region
(MDPI, 2023) Satyapriya Singh; Mahadevan Raghuraman; Manikyanahalli Chandrashekara Keerthi; Anup Das; Saswat Kumar Kar; Biswajit Das; Hidangmayum Lembisana Devi; Sunil Kumar Sunani; Manas Ranjan Sahoo; Ryan Casini; Hosam O. Elansary; Gobinda Chandra Acharya
The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith), is a polyphagous non-native pest identified as a serious threat to crop production and food security globally, including in India. Its unintentional introduction and quick coverage in large areas is a serious concern to millions of farmers in the eastern Himalayan region. However, detailed understanding of farmers’ perceptions and the biological attributes associated with the meteorological factors for FAW is limited. The present investigation, which aimed to create baseline data on this pest, concurs with the idea that the FAW is widely dispersed throughout the maize ecosystems of Tripura, with an average infestation rate of 21.33 percent. The severity ranged from 0 to 1.40, with an average leaf damage score of 1 on a 0–4 categorical scale. The findings indicate that pheromone trap catch was significantly correlated with the evaporation rate as other meteorological factors influenced variably. The biological attributes imply that the life cycle was completed in 32.82 ± 0.08 days, with a high fecundity potential (1068.57 ± 4.35 numbers) in controlled conditions (25 ± 1 °C, 70 ± 5% RH). Indigenous natural enemies, such as entomopathogens, spiders, and wasps, were found to be the first defence against this invasive pest. A minority of the population (17.51%) was aware of the incidence of FAW. Furthermore, respondents’ socio-demographic variables were associated significantly with FAW status. This is the first scientific report from the eastern Himalayan region about farmers’ knowledge and awareness of the invasiveness of FAW. This finding enumerates a detailed understanding of FAW from diverse perspectives. Further, the concerted data provide an important baseline that could help the development of holistic management strategies for FAW. © 2023 by the authors.
Unlocking the Potential of Arbuscular Mycorrhizal Fungi: Exploring Role in Plant Growth Promotion, Nutrient Uptake Mechanisms, Biotic Stress Alleviation, and Sustaining Agricultural Production Systems
(Springer, 2025) Ingudam Bhupenchandra; S. K. Chongtham; Ayam Gangarani Devi; Pranab Dutta; M. R. Sahoo; Sansuta Mohanty; Sumit Kumar; Anil Kumar Choudhary; Elangbam Lamalakshmi Devi; Soibam Sinyorita; Soibam Helena Devi; Madhusmita Mahanta; Arti Kumari; Hidangmayum Lembisana Devi; R. K. Josmee; Ayam Pusparani; Neeta Pathaw; Sachin Gupta; Mukesh Kumar Meena; Janmeda Pracheta; Chandra Shekhar Seth; Jaya Arora; Abhishek Sahoo; Prashant Swapnil
Arbuscular mycorrhizal fungi (AMF) are symbiotic organisms that form intimate relationships with host plants by developing intracellular structures called arbuscules within root cortical cells. They are vital to natural ecosystems, offering a range of ecological benefits. They enhance the uptake and transfer of essential nutrients, influence the composition of fungal and bacterial communities in the soil, and improve soil texture and structure. They also strengthen plant resilience by mitigating the effects of salinity, drought, extreme temperatures, pathogens, pests, and weeds. They support plant defense mechanisms through the production of antimicrobial compounds, induction of defense-related biomolecules, and activation of resistance genes. This article provides a thorough review of recent research on the interactions between plant nutrients and AMF. It explores key mechanisms in nutrient uptake, and examines the morphological, biochemical, and molecular changes in plants colonized by AMF. Additionally, the article discusses AMF's crucial role in alleviating biotic stress. By shedding light on these aspects, the review identifies research gaps and suggests future directions. Harnessing AMF's potential can reduce dependence on agrochemicals and promote a more sustainable agricultural system. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.