Stability Analysis of Plant Density and Frequency of Foliar Application of Nitrogen in Gladiolus hybrida

An attempt was made to find stable planting density and frequency of foliar nitrogen application using stability models. The data on various flowering and growth characteristics in gladiolus for four foliar nitrogen spray viz., 0, 3, 5 and 7 days and three planting density i.e. 100, 120 and 140 cormels m⁻² were collected and experiment was repeated in four seasons over two years. Treatment combinations of 3 days + 120 cormels m⁻² and 5 days + 120 cormels m⁻² were found to be stable for number of corms per m⁻²; 3 days + 100 cormels m⁻², 3 days + 120 cormels m⁻², 3 days + 140 cormels m⁻², 5 days + 100 cormels m⁻², 5 days + 120 cormels m⁻², 5 days + 140 cormels m⁻², 7 days + 120 cormels m⁻² and 7 days + 140 cormels m⁻² were found to be stable for weight of corms m⁻². 3 days + 140 cormels m⁻² was found to be stable for number of cormels plantm⁻¹ and 5 days + 100 cormels m⁻² was found to be stable for weight of cormels plantm⁻¹.