Influence of nano Zn formulations on rice cultivars under salt affected calcareous soils of Bihar
DOI:
https://doi.org/10.48165/jefa.2025.20.2.6Keywords:
Calcareous, nano zinc, salt affected, rice cultivarsAbstract
The field experiment, conducted at RPCAU, Pusa, Bihar, during Kharif 2022, to assess the effects of zinc treatments—control (no zinc), ZnSO4 foliar spray @ 0.5% (Zn1), nano zinc @ 20 ppm (Zn2), nano zinc @ 50 ppm (Zn3), and soil-applied ZnSO4 @ 50 kg ha–¹ (Zn4) on rice cultivars CSR 23 and DRR Dhan 48, in a split-plot design with recommended fertilizers, showed significantly enhanced tiller numbers, filled grains per panicle, and yields with Zn4 and Zn3 achieving the highest grain yields (3490 and 3430 kg ha–¹), respectively. DRR Dhan 48 outperformed CSR 23 in yield and nutrient uptake. Nitrogen content was highest with Zn4 (1.30% in grain, 0.50% in straw). Zinc content in grain and straw was significantly increased by Zn4 and Zn3, demonstrating nano zinc’s superior efficacy. Nano zinc, particularly at 50 ppm, is a sustainable alternative to conventional ZnSO4, enhancing rice productivity and nutritional quality in subtropical humid climates.
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