Effect of PGRs and Inorganic Fertilizers on Vegetative Growth and Flowering Behaviour of Chrysanthemum

An experiment was conducted to investigate the effect of PGRs and inorganic fertilizers on vegetative growth and flowering behaviour in chrysanthemum cv. Birbal Sahni and Julia during 2012-13 at Horticulture Research Farm, J V College, Baraut, Baghpat (UP). The three levels of each of GA3 (100, 200 and 250 ppm) and Cycocel (1000, 3000 and 5000 ppm) and three levels of inorganic fertilizers (F1 :100 kg N2 + 60 kg P O 2 5 + 40 kg K O 2 /ha; F2:150 kg N2 +120 kg P O 2 5 + 80 kg K O 2 /ha; and F3 : 200 kg N2 + 180 kg P O 2 5 + 120 kg K O 2 /ha) were applied. All the treatments appreciably improved the vegetative growth and flowering attributes of chrysanthemum. Maximum plant height, plant spread, diameter of main stem, number of branches/plant, number of leaves/plant and flowering parameters such as days taken to first flower bud appearance, days taken to flowering, flower size, flower weight/plant and number of flowers/plant were recorded at 150 ppm level of GA3 and 3000 ppm level of CCC. The inorganic fertilizers also significantly affected the above characters of chrysanthemum.