Asian Journal of Soil Science and Plant Nutrition

A field experiment was conducted during Rabi season of 2021 at Agronomy Instructional Farm, C. P. College of Agriculture, S. D. Agricultural University, Sardarkrushinagar. To evaluate the phosphorus and zinc on wheat yield, nutrient uptake, quality and post harvest soil fertility status. The experiment comprised of two factors each having four levels each of phosphorus (P₀–0 kg P₂O₅ ha^-1, P₁–30 kg P₂O₅ ha^-1, P₂–60 kg P₂O₅ ha^-1 and P₃–90 kg P₂O₅ ha^-1) and zinc (Zn₀–0 kg Zn ha^-1, Zn₁–2.5 kg Zn ha^-1, Zn₂–5.0 kg Zn ha^-1 and Zn₃–7.5 kg Zn ha^-1). Total sixteen treatment combinations were laid out factorial randomized block design with three replications. The results revealed that application of 90 kg P₂O₅ ha^-1 (P₃) and 7.5 kg Zn ha^-1 recorded significantly the higher grain and straw yields; which was found at par with 60 kg P₂O₅ ha^-1 and 5.0 kg Zn ha^-1.  Values revealed that phosphorus content in grain and straw was significantly increased with the application of 90 kg P₂O₅ ha^-1 (P₃) over rest of the treatments; which was found at par with 60 kg P₂O₅ ha^-1 (P₂). Nitrogen, phosphorus and potassium uptake by grain and straw was significantly higher with the application of 90 kg P₂O₅ ha^-1 and Zn @ 7.5 kg ha^-1; which was remained at par with 60 kg P₂O₅ ha^-1 and 5.0 kg Zn ha^-1. Available P₂O₅ content in soil was significantly increased with the application of 90 kg P₂O₅ ha^-1 and; which was remained at par with 60 kg P₂O₅ ha^-1. Results obtained that different levels of phosphorus and zinc did not show any significant change in soil pH, EC, OC, available K²O as well as quality parameters like gluten and protein contents. On the basis of results, it can be concluded that application of 90 kg P₂O₅ ha^-1 and Zn @ 7.5 kg ha^-1 significantly higher the grain and straw yields, nutrient uptake like N, P and K and available P₂O₅ status in soil after harvest of crop.