Effect of nutrient management and gibberellic acid on growth, flowering and nutrients availability in post-harvested soil of Marigold (Tagetes erecta L.) cv. Pusa Narangi Gainda

Abstract

An experiment was carried out at Horticultural Research Centre (HRC) of Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut, (UP) during winter season of 2017-2018. Among the treatments applied in the study, maximum plant height, plant spread, number of branches per plant, earliest flower bud initiation, days taken to opening of first flower, duration of flowering, length of flower stalk, diameter of flower and number of flowers per plant were recorded with the application of treatment T9 (100% R.D of NPK (100 kg N, 75 kg P and 75 kg K) + 25% R.D of Vermicompost (17.85 q/ha) + GA3 100 ppm and minimum values exhibited by control. The maximum available nitrogen in post-harvested soil (131.30 kg/ha) was recorded under treatment T4, while maximum availability of phosphorus in post-harvested soil (18.50 kg/ha) and potassium (278.25 kg/ha) was recorded under the treatment T6 and minimum NPK content was found under the treatment T12.