Effect of Plant Growth Regulators and Micronutrients on Growth, Flowering and Corm Production in Gladiolus (Gladiolus grandiflorus L.) cv. Nova Lux

A field experiment was conducted at the Department of Horticulture, Janta College, Bakewar, Etawah, India, during 2022-23. The experiment was conducted in a randomized block design with 10 treatments in three replications. Different combinations of Plant Growth Regulators (GA3) and Micronutrients - ZnSO4 and FeSO4 were used as treatments. The results revealed that, amongst all the treatments, the application of ZnSO4 (0.5%)+FeSO4 (0.5%)+GA3 (200 ppm) in treatment produced significant results. No. of sprouts per corm 3.32, Height of Plant at 30 DAP (59.53cm), Height of Plant at 45 DAP (76.26cm), Number of leaves per plant at 30 DAP 9.13, Width of leaves per plant 30 DAP(3.50cm), Days to initiation of spike 72.95, Number of spike per plant 3.66, Days to opening of first floret 85.29, Length of spike (75.36cm), Diameter of corm (10.36cm), Number of corms/plot 27.00 and average weight of single corm 209.61 gram. The findings suggest that the combination of ZnSO4 (0.5%) + FeSO4 (0.5%) + GA3 (200 ppm) might be used in production of gladiolus.