Vol. 12, Issue 12 (2023)

Author(s):
Ankesh, Anand Naik, Ravi S, Pandit S Rathod and Bellakki MA

Abstract:
A field experiment on “Effect of sulphur and zinc on uptake of nutrients and available soil nutrients status after harvest of cowpea (Vigna unguiculata L.)” was conducted during Kharif 2022 at ICAR-KVK farm, Kalaburagi. The experimental site soil colour was black, shallow to medium in depth with moderately alkaline pH, low in EC and SOC, low in nitrogen, medium in phosphorus, high in potassium and medium in sulphur. The experiment was laid out in RCBD with eight treatments replicated thrice. Results revealed that, soil pH, Electrical Conductivity, SOC and CaCO₃ were not significantly affected by soil application of sulphur and zinc. Application of RDF + 20 kg ha^-1 sulphur + 10 kg ha^-1 zinc sulphate recorded significantly higher available nutrients status and nutrient uptake like, uptake of nitrogen (88.03 kg ha^-1), phosphorus (20.87 kg ha^-1), potassium (58.7 kg ha^-1), sulphur (14.19 kg ha^-1), zinc (171.21 g ha^-1) and other micronutrients. Which was on par with RDF + 10 kg ha^-1 sulphur + 5 kg ha^-1 zinc sulphate. Hence, for effective management of sulphur and zinc, the application of RDF + 10 kg ha^-1 sulphur + 5 kg ha^-1 zinc sulphate was recommended.