One month old plants of C. tuberosum and P. daemia are grown in
earthen pots containing 4 kg of soil. Treatment with different
concentrations, that is 10, 20, 50 and 100 ppm of different growth
regulators that is IAA, IBA, NAA, and GA3 were given. Solutions
with these concentrations were prepared separately and a total of
two sprays were applied. The first spray was done on one month
old plants and the second spray was done after 15 days of the first
spray. Control plants were sprayed with sterilized distilled water.
Home spray atomizer was used as sprayer. Solution was sprayed
at the rate of 100 ml per plant. After 15 days of second spraying
plants were harvested in general by uprooting. Effect of growth
regulators on growth and productivity at various concentrations
were studied.