- Apr 23, 2018 -
Plant growth regulators are artificially synthesized substances with a phytohormone activity, which at a lower concentration (usually a few parts per million) still show a regulating effect on plant growth and development. According to the effect of plant growth regulators, plant growth regulators are generally divided into four major categories, growth promoters, growth retardants, growth inhibitors, and herbicides, in addition to preservatives, drought-resistant agents, and so on. There are no strict boundaries between phytohormones and plant growth regulators, and sometimes they can be interlinked, such as the cytokinin 6-BA, which is both a plant self-synthesis and artificial synthesis. It is both a hormone and a plant growth regulator. However, there are differences, such as sodium nitrophenolate, DA-6, and DCPTA. Which cannot be synthesized by pants themselves and only synthesized. Therefore, they are called plant growth regulators and cannot be called hormones.
When using plant growth regulators, please pay attention to four aspects:
1. The first is to be careful not to use plant growth regulators to replace fertilizer, that is to say it cannot replace fertilizer and other agricultural measures. Even if it is a plant growth promoter. It must be able to exert its effect with sufficient fertilizer and water conditions.
2. The second is not to change the concentration: the crop reuquire a stringent plant growth agent concentration. The concentration being too large, will cause the leaves to become fat and brittle and there will be dry and fall of the deformed leaves, and even the death of the whole plant; the concentration beling too small, it can not reach some effects.
3. The third is to pay attention to timely use: the use of plant growth regulators should be based on its type, climate conditions, drug efficacy duration and cultivation needs. Select the best time to use, so as to avoid unnecessary investment.
4. The fourth is not to mix or use arbitrarily: The mixture of several kinds of plant growth regulators or mixed with other pesticides and chemical fertilizers must be based on a thorough understanding of the enhancement or resistance of mixed pesticides to decide whether it is feasible or not.