Approved Plant Growth Regulator | Crop | Time of application / purpose | a.i. (ppm/gm/%) (Dosage per ha) | Formulation (ml/gm/L tr/kg/%) | Dilution In Water (Litres) / Preparation of solution | Waiting period / PHI between last applicatio n & harvest (days) |
Alpha Naphthyl Acetic Acid 4.5% SL (Na salt) | Cotton | To prevent shedding of flower squares & bolls (3 sprays at 15 days interval from square formation stage | 10-20 ppm. | 222-444 ml | 1000 ltr. | – |
Gibberellic Acid 0.001%L | Cotton | a) First spray 40-45 DAP b) Second spray: At the time of ball formation | 0.018gm | 180 ml | 450-500 | – |
Gibberellic Acid 0.186% SP | Cotton | to improve fiber quality one spray at square formation or early flowering stage | 142ppm. | 71 gm | 450-500 | – |
Mepiquat chloride 5% AS | Cotton | single spray at flowering stage to Control of excessive vegetative growth and to increase crop yield in cotton | 50-62.5 gm | 1.0-1.25 ltr | 500-600 | 57 |
Sodium Para –Nitrophenolate 0.3% SL | Cotton | Flower bud initiated stage and fruit set stage | 0.5% | 5ml | 800 | 16 |
Triacontanol 0.05% EC | Cotton | To increase the yield Three sprays at 45, 65 and 85 days after planting | 0.125 gm | 0.25ltr | 400-500 | – |
Triacontanol 0.05%w/w min. GR | Cotton | To increase the yield Broadcast & mix the desired quantity of granules in soil 2-3 days before sowing. | 12.5 gm | 25 kg. | – | – |
Triacontanol 0.1% EW | Cotton | To increase the yield Three sprays at 45, 65 and 85 days after planting | 0.25 gm | 0.25 ltr. | 400-500 | – |
Cyclanilide 2.10% w/w +Mepiquat Chloride 8.40% w/w SC | Cotton | First spray should be applied at square formation stage or after 45-55 days of sowing. 2nd and 3rd spray should be applied at an interval of 15 days. | 4.40 +17.60 to 4.95 +19.80 gm | 200 – 225 | 500 | 21 |
Chlormequat Chloride 50% SL | Cotton (American) | Square formation of early flowering (one spray) | 20-40 gm a.i/ha | 40-80 ml/ha | High Volume 375-600 Low volume 125-187 | – |
Chlormequat Chloride 50% SL | Cotton (Deshi) | Square formation of early flowering (one spray) | 75 a.i. gm/ha | 150 ml/ha | High volume 375-600 | – |