Plant growth promoters including 2,4-D, Ethephon, NAA,IBA,GA3, DA-6, Sodium nitrophenolate, 6BA and so on, they can promote cells division, differentiation and elongation growth, accelerate the growth of nutritive organs and reproductive organs.
2,4-D used to soak seeds and accelerate germination, improve germination rate, prevent flower and fruit from dropping, induce stenospermocarpy.
NAA mainly used to stimulate growth, promote cuttings rooting, flower thinning and fruit thinning, promote early ripe and increase production.
Ethephon can promote fruits and vegetables colour and ripe, shorten growth period and improve yield, storage and preservation, lose puckery, adjust flowering phase, usually used on Cucurbit corps, tomato and fruit trees.
DA-6 can improve plants peroxidase and nitrate reductase activity, increase chlorophyllous content and accelerate photosynthetic rate, promote plant cells division and elongation and roots growth, adjust nutrient balance.