Browsing by Author "Gupta, Sanjay Kumar"

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    Explicating the fertilizer potential of anaerobic digestate: Effect on soil nutrient profile and growth of Solanum melongena L.
    (Elsevier B.V., 2022) Vaish, Barkha; Srivastava, Vaibhav; Singh, Umesh Kumar; Gupta, Sanjay Kumar; Chauhan, Puneet Singh; Kothari, Richa; Singh, Rajeev Pratap
    The use of anaerobic digestate (ADg), a nutrient-rich residual product of the anaerobic digestion (AD) process, could be a promising strategy for nutrient recycling in agriculture. However, when analyzing the usage of waste digestate as an organic amendment, properties such as organic and nutritional content, hygienic quality, and stability are important factors to consider. In this context, the present study elucidates the suitability of ADg as a fertilizer supplement based on agricultural criteria, including soil nutrient dynamics and the growth performance of brinjal (Solanum melongena L. var. Kashi Uttam). Pot experiments were conducted to explore the viability and response of ADg produced from three different organic wastes viz. the organic fraction of municipal solid waste (OFMSW), sewage sludge (SS), and flower waste (FW). Five fertilization treatments of each ADg, i.e., 0, 25, 50, 75, and 100%, designated as C, T1, T2, T3, and T4, were examined. The findings exhibited a significant (p<0.05) increase in Total Organic Carbon (TOC), exchangeable Na, K, Ca, and available P, while a considerable increment (p>0.05) in TKN was noticed in all the treatments. Biochemical analyses of brinjal depicted significant enhancement (p<0.05) in total chlorophyll (66.7 %) and carotenoid (56.03%) in T1 treatment of OFMSW ADg at 65 DAS. Likewise, maximum protein content increased by 326.8% in T2 of FW ADg at 65 DAS. However, a few of the metal contents also increased with increasing ADg(s) dosage but were well within the permissible limits of the Indian standard. A progressive increase in proline, peroxidase, and lipid peroxidation (p<0.05) was observed with increasing dosages, indicating metal-induced physiological stress in plants. However, improved ascorbic acid and phenol (23.8% at T2 treatment of OFMSW ADg) content allayed oxidative stress. Likewise, augmented morphological and yield (173.4% in T3 treatment of OFMSW ADg and 153.6% in T4 treatment of FW ADg) responses of brinjal in all the treatments showed their aptness for agricultural application with multifaceted environmental benefits. However, more research into the impacts of ADg on soil and plant growth and its transformation during AD is needed to identify the digestate's end-use value. � 2022 The Author(s)
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    Exploring the Entrepreneurial Climate and Attributes of Agripreneurs and its Determinants
    (Indian Society of Extension Education, 2023) Gupta, Sanjay Kumar; Nain, Manjeet Singh; Singh, Rashmi; Mishra, Jyoti Ranjan; Lata, Anshu
    The entrepreneurial climate is a set of tangible and intangible factors that shape and create a climate for agripreneurship in a region or area. An attitude scale was developed with 44 items (36 items positive and 8 negatives) during 2022. It was administered to 120 agripreneurs of Uttar Pradesh and it was found that the majority of the factors namely institutional, psychological, cognitive, sociological, economical, and managerial were contributing significantly to creating and shaping the entrepreneurial climate. Among these major factors, managerial factors were contributing most prominently with the highest total mean score of 2.83. The possible relation between socio-personal, socio-psychological, and entrepreneurial variables was explored considering the various dimensions of entrepreneurial climate as dependent variables. It was found that the majority of characteristics was associated with entrepreneurial climate and was able to define to the extent of 62.30 per cent. � Indian Journal of Extension Education (http://www.iseeiari.org).
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    India's renewable energy research and policies to phase down coal: Success after Paris agreement and possibilities post-Glasgow Climate Pact
    (Elsevier Ltd, 2023) Singh, Kripal; Meena, Ram Swaroop; Kumar, Sandeep; Dhyani, Shalini; Sheoran, Seema; Singh, Har Mohan; Pathak, Vinayak V.; Khalid, Zaira; Singh, Anita; Chopra, Kapil; Bajar, Somvir; Ansari, Faiz Ahmad; Gupta, Sanjay Kumar; Varjani, Sunita; Kothari, Richa; Tyagi, Vineet Veer; Singh, Bhaskar; Byun, Chaeho
    In Paris Climate Agreement (COP 21) in December 2015, India committed to cut its carbon (C) emissions by 30�35% of its GDP (gross domestic product) and attain 40% of installed energy from renewables by 2030. In the Glasgow Climate Pact (COP 26), an agreement developed at COP26 of UNFCCC in November 2021, India committed to enhancing its renewable energy (RE) capacity to 500 GW and installing 50% of its power from renewable resources by 2030. It is projected that this will help India to reduce its C emissions by 1Bt, reduce emission intensity to the economy by 45% by 2030, and meet the goal of C neutral economy by 2070. Realization of these highly ambitious commitments made at COP26 can be determined by the nation's growth in REs after COP21. Therefore, this article reviews the overall development of renewable energies � solar, wind, biomass, hydrogen, and hydro � in India after COP21 by the end of December 2021. This review provides detailed information on various policies and roadmaps for each energy sector commitments. It identifies major technical and social challenges associated with the sustainability of these sectors. This review offers insights into how realistically ambitious plans India has for �phasing down� the use of coal by 2050 and being a carbon-neutral economy by 2070. India achieved massive success through solar energy after COP21 and 80% of future investments are for solar energy. Comparatively, there has been the least investment in other REs such as bioenergy, water, and wind. � 2023 Elsevier Ltd
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    Microalgae from wastewaters to wastelands: Leveraging microalgal research conducive to achieve the UN Sustainable Development Goals
    (Elsevier Ltd, 2023) Singh, Kripal; Ansari, Faiz Ahmad; Ingle, Kapilkumar Nivrutti; Gupta, Sanjay Kumar; Ahirwal, Jitendra; Dhyani, Shalini; Singh, Shraddha; Abhilash, P.C.; Rawat, Ismael; Byun, Chaeho; Bux, Faizal
    The scientific evidence on applications of microalgae in bioremediation of wastewaters, increasing agricultural productivity, and biomass production strengthens their potential in supporting global socio-economic and environmental sustainability. Microalgae can consume organic compounds and pollutants present in domestic, agricultural, and industrial wastewater. This leads to biomass production in wastewater and water being relatively safe to be disposed of into water bodies and safeguard life in water. The extensive diversity of microalgae, encompassing a distinct array of physiological, reproductive, and functional traits, along with their remarkable efficiency in wastewater treatment, positions this group of organisms as exceptionally superior to other organisms. Molecular and biotechnological approaches have provided promising tools for improving the biomass production of microalgae from wastewater. Recent technological innovations have facilitated harvesting algal biomass from wastewater treatment plants for developing a range of bioproducts like bioenergy, biofertilizer and other various high value biochemicals. Microalgal communities and their biomass produced from wastewater are investigated for the restoration of degraded lands. The potential use of diverse microalgal species and their biomass from wastewater for restoration of degraded lands such as salt-affected lands, drought ridden arid areas, fly ash contaminated lands, and metal-polluted mine spoils is discussed. Moreover, this review elaborates on how use of microalgae from wastewater to wastelands can contribute to various sustainable development goals (SDGs). It is found that extending microalgae research and use from wastewater to wastelands can support achieving all SDGs by directly contributing to 10 goals. � 2023