Response of Different Stem Cutting to IBA on Sprouting and Survival of Night-blooming Jasmine (Cestrum nocturnum L., Solanaceae)

Abstract

The present investigation was assessed at Floriculture farm of College of Horticulture, Dapoli, Dist. Ratnagiri, (Maharashtra state) during Rabi season of the year 2023-24. The experiment was designed in Factorial Randomized Bock Design replicated thrice comprised two factors viz. types of stem cutting (Factor A) as softwood cutting, semi-hardwood cutting and hardwood cutting and IBA levels (factor B) as control, IBA @ 1500 ppm, 2000 ppm, 2500 ppm and 3000 ppm. Softwood cutting recorded minimum days taken for first sprout (6.33 days) and highest days required for sprouting (32.07 days). Hardwood cutting registered higher sprouting percentage (85.60 %) and survival percentage (80.93 %). Minimum days taken for first sprout (6.11 days), days required for highest sprouting (29.22 days) and maximum sprouting percentage (88 %) were recorded in control treatment. IBA @ 2000 ppm recorded the highest survival percentage (84.64 %). In interaction effect, softwood cutting treated with IBA @ 2000 ppm recorded early appearance of first sprout (4.00 days). However, softwood cutting treated without IBA took least days for highest sprouting (29.22 days). The highest sprouting percentage (100 %) was recorded in hardwood cutting treated with 1500 ppm IBA and 2000 ppm IBA. Hardwood cutting treated with 2000 ppm IBA recorded 100 % of survival percentage. Hence, it concluded that treatment combination of hardwood cutting treated with 2000 ppm IBA showed promising result for sprouting and survival percentage of night-blooming jasmine under Konkan agro-climatic condition.