Abstract:
A field experiment was conducted to study the effect of plant growth regulators and time of
application on growth and tuber yield of Coleus forskohlii. The experiment consists of five
levels of growth regulator concentration and four times of application treatments. The
experiment was arranged in Randomized Block Design with factorial concept and replicated
three times. The results showed that application of cycocel significantly suppressed the
vegetative growth. Cycocel 250 ppm and 500 ppm produced significantly highest number of
branches per plant Highest number of tubers per plant, length of tubers and fresh weight of
tubers were significantly influenced by application of Cycocel 500 ppm. The highest fresh
tuber yield per hectare (70.14 q/ha) were obtained with application of Cycocel 500 ppm and it
was on par with Cycocel 250 ppm
