Vol. 11, Issue 7 (2022)

Author(s):
Charishma DS, MV Ravi, SR Balanagoudar, H Veeresh and Sharanagouda Hiregoudar

Abstract:
Field experiment was conducted during rabi 2019-20 to study the effect of various sources of zinc nanoparticles in sorghum under rainfed conditions. The experiment was laid out in Randomized Block Design (RBD) with 12 treatments and replicated thrice. In this study nitrogen, phosphorus and potassium content and uptake in sorghum grain and stover were evaluated. Results revealed that different treatments had a significant effect on nutrient content and uptake in sorghum. Foliar spray of both green and chemical zinc oxide nanoparticles (ZnO NPs) was superior in results than conventional zinc sulphate heptahydrate (ZnSO₄.7H₂O) sources. The nutrient content of phosphorus and potassium in grain and stover at different intervals was superior with foliar spray of chemical ZnO NPs @ 1000 ppm. The total nutrient uptake of nitrogen, phosphorus and potassium in grain and stover was higher with foliar spray of green ZnO NPs @ 1000 ppm with increased biomass production and it was on par with foliar spray of chemical ZnO NPs @ 1000 ppm.