Vol. 12, Issue 12 (2023)

Author(s):
MM Parve, MJ Mane, PS Bodake, VA Rajemahadik, RV Dhopavkar, AV Mane, VN Kale and AT Thorat

Abstract:
Appropriate nitrogen (N) management technique enhances nutritional properties and yield while limiting the environmental impact. In modern agriculture, precision nutritional management is led by nano-fertilizers. In this paper we investigate the “Effect of foliar application of Nano-Urea on nutrient quality and yield of kharif rice (Oryza sativa L.) under lateritic soil condition.” A field experiment was conducted at Instructional Farm, Department of Agronomy, College of Agriculture, Dapoli; Dr. B. S. Konkan Krishi Vidyapeeth, Dapoli; during Kharif, 2022. The analytical work was done at research laboratory of Department of Agronomy. in randomized block design with 9 treatments viz., T₁: Control (no foliar application),T₂: 100% N, P₂O_5, K₂O RDF (Recommended Fertilizer Dose), T₃: 75% N + 100% P₂O₅ and K₂O + 1 spray of Nano-Urea @ 0.4% at 30 DAT, T₄: 75% N + 100% P₂O₅ and K₂O + 2 spray of Nano-Urea @ 0.4% at 30 and 50 DAT, T₅: 50% N + 100% P₂O₅ and K₂O + 2 spray of Nano-Urea @ 0.4% at 30 and 50 DAT, T₆: 50% N + 100% P₂O₅ and K₂O + 3 spray of Nano-Urea @ 0.4% at 30, 45 and 60 DAT, T₇: 25% N + 100% P₂O₅ and K₂O + 3 sprays of Nano-Urea @ 0.4% at 30, 45 and 60 DAT,T₈: 25% N + 100% P₂O₅ and K₂O + 4 sprays of Nano-Urea @ 0.4% at 15, 30, 45 and 60 DAT, and T₉: 100% P₂O₅ and K₂O + 4 sprays of Nano-Urea @ 0.4% at 15, 30, 45 and 60 DAT. replicated thrice. The results reveled that the maximum grain yield (4817.80 kg ha^-1), straw yield (5956.26 kg ha^-1) and biological yield (10774.06 kg ha^-1) of rice and higher nutrient (N, P and K) content and uptake by grain and straw and their total uptake by rice crop were also ensured under treatment receiving 50% N + 100% P₂O₅ and K₂O + 3 spray of nano-urea @ 0.4% at 30, 45 and 60 DAT (T₆).