Vaishnavi Rajput, Pradeep Rajput, Sanket Ingle, Pradeep Kr. Kanaujiya and Jaidev Sharma
Abstract
A field experiment was conducted during the winter (rabi) season of 2023-24 at Crop research Centre 1 (CRC-1) of ITM University Gwalior, (M.P.), to investigate the response of wheat (Triticum aestivum L.) to nano-urea under different combinations of herbicide. The experiment consisted a split-plot design involving 4 herbicide-based weed management treatments, H1- Mesosulfuron-methyl 3% + Iodosulfuron-methyl sodium 0.6 WG @ 400 g ha-1, H2- Clodinafop propargyl 15% + Metsulfuron-methyl 1% WP @ 400 g ha-1, H3- weed-free check and H4- weedy check in main plots and 4 nutrient management treatments, N0- control (no nitrogen), N1- 100% recommended dose of nitrogen (RDN), N2- 75% RDN + 1 Spray of Nano urea at 40 days after sowing (DAS), and N3- 50% RDN + 2 Spray of Nano urea (at 40DAS and 60 DAS) in sub plots and replicated thrice. Results revealed that maximum grain and straw yield were significantly higher in weed-free check, being at par with H2-Clodinafop propargyl 15% + Metsulfuron methyl 1% WP @ 400 g ha-1 (3373.19 and 4232.63 kg ha-1), followed by H1- Mesosulfuron-methyl 3% + Iodosulfuron-methyl sodium 0.6 WG @ 400 g ha-1 (3086.44 and 3941.72 kg ha-1). Among nutrient management practices, grain and straw yield were significantly higher in N1-100% RDN (3610.96 and 4310.33 kg ha-1), which was being at par with N2-75% RDN + 1 spray of nano-urea (3409.74 and 4221.20 kg ha-1) over N3-50% RDN+ 2 sprays of nanourea, respectively.