Effect of Compost and Vermicompost Amendments on Biochemical and Physiological Responses of Lady’s Finger ( Abelmoschus esculentus L.) Grown under Different Salinity Gradients

Ibha Suhani, Vaibhav Srivastava, Mallavarapu Megharaj, Surindra Suthar, Vinod Kumar Garg and Rajeev Pratap Singh ()
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Ibha Suhani: Waste Management, Resource Recovery & Ecotoxicology Laboratory, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
Vaibhav Srivastava: Department of Botany, Faculty of Science, University of Allahabad (A Central University), Prayagraj 211002, Uttar Pradesh, India
Mallavarapu Megharaj: College of Engineering, Science and Environment, The University of Newcastle University Drive, Callaghan, NSW 2308, Australia
Surindra Suthar: School of Environment & Natural Resources, Doon University, Dehradun 248001, Uttarakhand, India
Vinod Kumar Garg: School of Environment and Earth Sciences, Department of Environmental Science and Technology, Central University of Punjab, Bathinda 151401, Punjab, India
Rajeev Pratap Singh: Waste Management, Resource Recovery & Ecotoxicology Laboratory, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India

Sustainability, 2023, vol. 15, issue 15, 1-19

Abstract: In the coming decades, the pressure to use saline water will increase as most of the natural resources with good water quality are being depleted. In order to avoid more stress on the soil plant system, a better understanding of the type of amendments and their integration with the irrigational water quality of any location-specific region is essential. Utilizing salt-affected lands in the best way possible will facilitate food security for the growing human population. An experiment was conducted with the Abelmoschus esculentus L. plant, irrigated with saline water having different NaCl gradients (0, 50, 100 and 150 mM), to evaluate the biochemical and physiological responses under different salinity gradients. Additionally, the effect of compost and vermicompost amendments in soil on plant responses to the changing salinity of irrigated water was observed. The results suggested that the addition of compost and vermicompost in soil not only suppressed the adverse impact of salinity in plants but also increased soil nutrients (TKN, OC, avail. P, avail. K and avail. Ca contents). Moreover, some biochemical parameters and plant growth parameters showed better traits in such manure-amended setups. The enhancement of proline, phenol, ascorbic acid and lipid peroxidation contents in the leaves of Abelmoschus esculentus L. under high salinity levels suggests some secondary metabolite-mediated response possibly due to stress caused by soil salt accumulations. In summary, crop production could be efficiently maintained in saline water-irrigated areas after amending the soils with appropriate organic manure.

Keywords: saline water; NaCl; irrigation; compost; vermicompost; Abelmoschus esculentus L. (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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