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Impact of the low and high concentrations of fly ash amended soil on growth, physiological response, and yield of pumpkin (Cucurbita moschata Duch. Ex Poiret L.)

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Abstract

Fly ash, a result of coal burning in thermal power plants, is sustainably used in agriculture and has been regarded as a problematic solid waste worldwide. The presence of some desired nutrients (macro and micro) and its porosity makes it a marvelous soil amendment for plant growth and development. The present study was done to evaluate the effect of different fly ash levels on pumpkin crop (Cucurbita moschata). Pot experiment in randomized block design was conducted with different fly ash supplement treatments to analyze the impact of fly ash on growth, chlorophyll, carotenoid, biochemical parameters, and pumpkin crop yield. The results show variation in soil’s physical and chemical properties after the application of fly ash (30 and 50%). Also, the lower levels (10–30%) of fly ash amended soil significantly (P ≤ 0.05) enhanced the growth (plant height, plant fresh and dry biomass, no. of leaves, and average area of the leaf), chlorophyll content, and biochemical contents (protein, carbohydrate, mineral, and leaf water content) in pumpkin crop. The proline content was also observed to enhance by the increasing levels of fly ash to soil. The yield parameters in terms of a number of flowers and fruits, fruits’ length and diameter, and fresh and dry weight of fruits were also significantly increased in amended soil with 10–30% fly ash. On the other hand, the higher doses, i.e., 40% and 50% of fly ash showed a negative effect and reduced the growth, chlorophyll, carotenoid, biochemical content, proline, and yield in pumpkin crop. We concluded that the lower level of fly ash (up to 30%) could be used as fertilizer in agricultural fields for the improvement of vegetable as well as other food crops in a sustainable manner but the higher level of fly ash (40 and 50%) is toxic to the plant.

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Acknowledgment

The authors are extremely thankful to the chairperson, Department of Botany, AMU, Aligarh, and University Grant Commission (UGC), New Delhi, for providing necessary facilities during experimental work.

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The authors are extremely thankful to the chairperson, Department of Botany, AMU, Aligarh, and University Grant Commission (UGC), New Delhi, for funding this research.

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  1. Environmental Botany Lab, Department of Botany, Aligarh Muslim University, Aligarh, India

    Gufran Ahmad & Abrar A. Khan

  2. Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Cairo, Egypt

    Heba I. Mohamed

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  1. Gufran Ahmad
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Gufran Ahmad: conceptualization, methodology, statistical analysis, data analysis, writing original data preparation; Abrar Ahmad Khan and Heba Ibrahim Mohamed: supervision, reviewing, and editing.

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Ahmad, G., Khan, A.A. & Mohamed, H.I. Impact of the low and high concentrations of fly ash amended soil on growth, physiological response, and yield of pumpkin (Cucurbita moschata Duch. Ex Poiret L.). Environ Sci Pollut Res 28, 17068–17083 (2021). https://doi.org/10.1007/s11356-020-12029-8

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