Vol. 9, Special Issue 10, Part N (2025)

The present study entitled, “Effect of different levels and sources of nitrogen on chemical properties of sodic soil under spinach cultivation” was carried out at research farm of Department of Soil Science, MPKV, Rahuri during summer 2024. The study revealed that, among different levels (40, 80 and 100 kg N ha^-1) of urea and ammonium sulphate on soil pH, electrical conductivity, organic carbon, calcium carbonate, available phosphorous, available potassium and available micronutrients were found non-significant. But for available nitrogen treatment T₇ (100 kg N ha⁻¹ ammonium sulphate) has highest available nitrogen (167 kg ha^-1) in soil which is at par with 80 kg N ha⁻¹ ammonium sulphate-T₆ (163 kg ha^-1), 80 kg N ha⁻¹ ammonium sulphate + foliar spray of 0.2% nano urea-T₁₁ (162 kg ha^-1) and 100 kg N ha⁻¹ urea-T₄ (159 kg ha^-1) over all other treatments.