Effect of planting dates and GA3 on growth, flowering and yield of golden rod

Abstract

An experiment entitled "Effect of planting dates and GA3 on growth, flowering and yield of golden rod" was carried out during Kharif season of the year 2018-2019 at Satpuda Botanical Garden, Horticulture Section, College of Agriculture, Nagpur, Dr. PDKV, Akola (M.S.). The treatments comprised of four planting dates viz., 15 th June, 15 th July, 15 th August and 15 th September and three levels of GA3 viz. Control, 200 ppm GA3 and 250 ppm GA3. Before planting suckers of golden rod were dipped in GA3 solution of different concentrations as per the treatment for 6 hours. The experiment was laid out in Factorial Randomized Block Design with three replications. The results revealed that, in respect of growth parameters, plant height with panicle, number of leaves plant -1 and plant spread were recorded significantly maximum with the planting date of 15 th June and suckers treatment with 200 ppm GA3. In respect of flowering parameters, initiation of panicle and opening of first flower were registered significantly earliest when golden rod suckers planted on 15 th June and treated with 200 ppm GA3. The yield parameters like number of panicles plant -1 and ha -1 were also found significantly maximum with the planting date of 15 th June and the sucker's treatment with 200 ppm GA3.