Effect of growth substances on growth and yield of golden rod (Solidago Canedensis L.)

An experiment was conducted to study the effect of growth substances on growth and development of golden rod (Solidago canedensis L.). Application of growth substances had a significant effect on all the vegetative characters such as plant height, number of suckers, number of leaves and chlorophyll content of golden rod. Flower stalk yield in terms of number and tonnage was influenced due to application of growth substances. The maximum number (768.45 thousands/ha) of flower stalks were obtained from the plants treated with 1000 ppm CCC. Flower stalk yield in terms of tonnage was the highest in plants treated with GA₃ and CCC. Yields from the plants treated with GA₃ at 100 and 200 ppm and CCC at 1000 ppm were higher as compared to other treatments It was maximum (41.2 tonnes/ha) from the plants treated with GA₃ at 200 ppm, while it was minimum (12.08 tonnes/ha) in plants treated with 2000 ppm paclobutrazol.