Pesticides refer to the kind of chemical reagents used in agriculture for protecting crops from disease, insects, rodents and regulating plant growth, and killing the weed. In addition to being applied to agriculture, it can also be used in health and epidemic prevention, forestry, animal husbandry, environmental, and health aspects. Based on the control object, it can be divided into insecticides, fungicides, miticides, nematicides, rodenticides, herbicides, defoliants, and plant growth regulating agents.
Paclobutrazol belongs to azole plant growth regulators, being the biosynthetic inhibitors of the endogenous gibberellin. It has effects of hindering plant growth and shortening the pitch. For example, being used in rice can improve the activity of indole acetic acid oxidase, reduce the level of endogenous IAA in rice seedlings, significantly control the growth rate of the top of the rice seedlings, promote leaf, make the leaves dark green, the root system developed, reduce the lodging and increase the production amount. The general control rate is up to 30%; the leaf promotion rate is 50% to 100%, and the production increase rate is 35%. Being used in peach, pear, citrus, apples and other fruit trees can be used to shorten the tree. Geranium, poinsettia, and some ornamental shrubs, when treated with paclobutrazol, have their plant type be adjusted, giving higher ornamental value. Cultivation of greenhouse vegetables such as tomatoes and rape gives a strong seedling effect.
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