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<p>The concern over micronutrient deficiencies, especially zinc (Zn), is a pressing agricultural issue, impacting both crop yield and human nutrition. Conventional Zn fertilizers often show low efficiency, prompting the development of nano-based alternatives. This study evaluates the effects of conventional and nano Zn fertilizers, specifically Zincated Nanoclay Polymer Composite (ZNCPC) on Zn fractions and the yield performance of rice crop. The experiment was conducted over two consecutive years (2019–2020) with three prominent rice varieties (Sabour Shree-V<sub>1</sub>, Rajendra Sweta- V<sub>2</sub>, and Sabour Ardhjal-V<sub>3</sub>) and five different sources of zinc (in both chemical and nano-polymer forms) in split plot design replicated thrice. Application of Zn, either as ZnSO<sub>4</sub> or ZNCPC, significantly enhanced DTPA-extractable Zn by 22–27% over control. The highest increase in soil organic carbon level was observed in treatments with basal Zn application, with comparable values with the application of ZNCPC. Rice yields were significantly improved with Zn treatments, with Sabour Shree achieving the highest grain yield (3.54 t ha<sup>− 1</sup>). Zn uptake varied among the rice varieties, with the highest uptake in Sabour Shree. ZNCPC improved the apparent zinc recovery (AZR) and agronomic efficiency (AE<sub>Zn</sub>). In comparison to all the conventional sources of Zn application, ZNCPC raised all Zn fractions in the soil. There was a strong correlation between rice yield and zinc uptake by rice plants, while AZR and AE<sub>Zn</sub> also showed significant associations with soil Zn fractions. These findings suggest the potential application of ZNCPC in rice cultivation, as it enhances zinc availability, apparent zinc recovery, and overall use efficiency.</p>

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Evaluation of Yield Response and Soil Zinc Fractions in Three Rice Varieties Grown with Conventional and Nano Zinc Sources

  • 期刊论文

  • 发表日期：

    2025年11月24日

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  • Shweta Shambhavi,
  • Ankit Kumar,
  • Anupam Das,
  • Bholanath Saha,
  • Bipin Bihari,
  • Rajiv Rakshit

摘要

The concern over micronutrient deficiencies, especially zinc (Zn), is a pressing agricultural issue, impacting both crop yield and human nutrition. Conventional Zn fertilizers often show low efficiency, prompting the development of nano-based alternatives. This study evaluates the effects of conventional and nano Zn fertilizers, specifically Zincated Nanoclay Polymer Composite (ZNCPC) on Zn fractions and the yield performance of rice crop. The experiment was conducted over two consecutive years (2019–2020) with three prominent rice varieties (Sabour Shree-V1, Rajendra Sweta- V2, and Sabour Ardhjal-V3) and five different sources of zinc (in both chemical and nano-polymer forms) in split plot design replicated thrice. Application of Zn, either as ZnSO4 or ZNCPC, significantly enhanced DTPA-extractable Zn by 22–27% over control. The highest increase in soil organic carbon level was observed in treatments with basal Zn application, with comparable values with the application of ZNCPC. Rice yields were significantly improved with Zn treatments, with Sabour Shree achieving the highest grain yield (3.54 t ha− 1). Zn uptake varied among the rice varieties, with the highest uptake in Sabour Shree. ZNCPC improved the apparent zinc recovery (AZR) and agronomic efficiency (AEZn). In comparison to all the conventional sources of Zn application, ZNCPC raised all Zn fractions in the soil. There was a strong correlation between rice yield and zinc uptake by rice plants, while AZR and AEZn also showed significant associations with soil Zn fractions. These findings suggest the potential application of ZNCPC in rice cultivation, as it enhances zinc availability, apparent zinc recovery, and overall use efficiency.