Quality characteristics of cotton lint as affected by plant growth regulators, micronutrients and insecticides

The lint samples for different treatments were collected separately. The ginning, seed index, micronaire, fibre maturity, staple length, fibre strength, ginning out turn and seed germination tests were 4 carried out with the help of different machines. The results show that there is no significant effect of damage simulation (removal of fruiting bodies and leaves) and applications of plant growth regulators and micronutrients on seed index, fibre maturity, staple length, ginning out turn and seed germination. However the higher micronaire value and fibre strength values of cotton lint were recorded which show that they were significantly affected. Whereas the micronaire and fibre strength were not significantly affected by the application of plant growth regulators. Moreover, the application of insecticides significantly affect the staple length, fibre strength, G.O.T% and did not significantly affect the seed index, fibre maturity, seed germi nation and micronaire. The time of harvesting significantly affected all the lint quality characters under present studies. There was no significant effect of damage simulation (removal of fruiting bodies and leaves) and application of micronutrient and plant growth regulators on seed index, fire maturity, staple length, ginning out turn and seed germination but micronaire value and fibre strength were significantly affected by the use of micronutrients. Whereas plant growth regulators have no effect on micronaire and fibre strength. Moreover, application of insecticides was not significantly effect the seed index, Fiber maturity, seed germination and micronaire but significantly effect the staple length, Fiber strength and G.O.T. Whereas the time of harvesting (picking) significantly affected lint quality characters.