Vol. 12, Issue 9 (2023)

Author(s):
Sampurna Nand Singh, Navin Singh, Gurdeep Bains, Omveer Singh, Vijay Pratap Singh, Rajesh Kumar and Pratibha

Abstract:
An experiment was conducted in 2021-22 to evaluate the biochemical characteristics of guava cv. VNR Bihi in different seasons (winter and rainy) by the spray of different concentrations of ZnO NPs (0, 50 100, 150 and 200 ppm). The results indicated that applying zinc oxide nanoparticles at 150 ppm via spraying led to the highest levels of Total Soluble Solids (TSS) at 11.10 ^oB, ascorbic acid at 157.65 mg/100g, and sugars content at 7.98%, while keeping titratable acidity at its lowest at 0.45%, consistent in both seasons. Among the seasons all the qualitative characteristics were found better in the winter season crop as compared to the rainy season. The study suggested that foliar application of ZnO nanoparticles significantly enhanced the biochemical characteristics of guava in both seasons. Consequently, ZnO nanoparticles have the potential to serve as an alternative to conventional bulk zinc fertilizers.