Studies on the impact of organic and inorganic stimulants on growth, flowering and corm production in gladiolus (Gladiolus grandiflorus L.)

Abstract

An experiment entitled “Studies on the impact of Organic and Inorganic Stimulants on growth, flowering and corm production in Gladiolus (Gladiolus grandiflorus L.)” was carried out at the Horticultural Research cum Instructional farm, College of Agriculture, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.) during the year 2023-24. The treatment contained GA3 (100 and 200 ppm), Thiourea (2% and 3%), BA (50 and 100 ppm), KNO3 (250 and 500 ppm), Cow urine (25 and 50%), Cow dung slurry (25 and 50%) and Water (Control). The experiment was performed in a Randomized Block Design with three replications. The application of GA3 at 200 ppm proved to be the most effective in increasing days taken to sprouting (5.38 days), plant height (129.07 cm), number of days taken to spike initiation (59.00 days), spike length (76.13 cm), number of florets per spike (14.73), vase life of cut spike days (10.20), weight of corms per plant (63.30 g) and weight of cormels per plant (23.86 g). BA increased number of sprouts per corm (3.30), number of spike (3.30) and number of corms per plant (3.06). Whereas among the organic stimulants cow dung slurry at 50% performed best in improving spike length (72.80 cm).