Vol. 9, Special Issue 9, Part K (2025)

This study investigated the application of RDN (recommended dose of nitrogen) combined with foliar spray of Nano Urea affects vegetative growth of gaillardia (Gaillardia pulchella) cv. Local, conducted at the Horticulture Polytechnic, ASPEE College of Horticulture, Navsari Agricultural University, Navsari, Gujarat, during Summer 2024. The experiment employed seven treatments involving different combinations of recommended dose of nitrogen (RDN) and Nano Urea. Among the treatments, combination of 75% RDN with Nano Urea @ 4 ml/lit recorded maximum plant height (27.9, 53.0 and 65.9 cm), number of leaves per plant (102.25, 272.67 and 421.13) and number of branches per plant (11.33, 15.38 and 18.20) at 60, 90 and 120 days after transplanting. Maximum leaf area (17.49 and 19.88 cm²) was recorded at 90 days and 120 DAT, along with leaf chlorophyll content (3500.37 mg/100 g).