Herbicide herbicide remedies

There are many varieties of wheat herbicides, and their physicochemical characteristics, site of action, and principle of action are all different. Therefore, the symptoms of phytotoxicity are also different, some are expressed in the body of plants, some are on the outside, some are on the ground, Some are in the underground section.

First, the symptoms of phytotoxicity (A) 2,4-D herbicides (2,4-D butyl ester, 2 A, 4 sodium chloride, etc.) used in excessive use and low temperatures, will make the wheat seedling leaves chlorosis Yellowing, the new leaves are onion-like and their ears are curled. It is difficult to pull them out and there are terrible spikes. (2) Oat fear When wheat is sown before sowing, it will be absorbed by a large amount of wheat colemullars, resulting in expansion of the coleoptile sheath, headspace of the sheath, growth stoppage, and the leaves of the wheat will be dark green and withered after emergence. (c) Green mellon, prometryn, simazine, etc. These are all herbicides that are absorbed by the roots. When the amount of medication is too large or the spraying is not uniform, the wheat exhibits typical “green chlorosis” due to inhibition of wheat photosynthesis. After the wheat roots are absorbed, the leaves of the wheat sprouts retreat green and yellow, like the symptoms of spotting and burning. The plants are dwarf, grow slowly until they stop, and finally the victim plants are starved for lack of nutrients. (d) Baicao enemy is applied before and after the 3rd leaf stage of wheat. If the period of use is not appropriate, it can cause the leaves to roll inwards and the plants are compact and straight. After returning green, the leaves are dark green, the stems are straight and hard, the main stem and minute leaves become thin, the ear deformities are twisted, and the grapevines are tilted. Scallion tube. Excessive use of Baicao enemy during vigorous growth of wheat results in the emergence of seedlings, slanting or bending of plants. If the application of the spikelet development in wheat enters the stamen and stamen differentiation stage, the development of the floret will be seriously interfered and destroyed, which will result in the failure of the wheat to produce a substantial reduction in yield.

Second, the remedies for phytotoxicity (a) to take detoxification measures as soon as possible. When phytotoxicity has occurred or is about to occur, immediate irrigation and detoxification measures shall be taken, toxic irrigation water in the field shall be drained, fresh water shall be continuously used for irrigation, or combined with drainage and lime, etc. to neutralize acidic herbicides in the field. Reduce phytotoxicity. For the phytotoxicity on the plants, the residual pesticides on toxic plants can be rinsed with sprinkling or spray water to reduce the damage. (b) Strengthen field management in affected wheat fields. 2,4-D herbicides applied improperly to the wheat seedling stage. When a cylindrical leaf was found, it was necessary to increase tiller fertilizer, promote tillering, and increase the percentage of spikes so as to reduce the damage caused by pesticides. In the fertilization, pay attention to apply more organic fertilizer. Organic matter can adsorb herbicides, causing some of the herbicide to lose some of its activity, while also providing nutrients for the crop to recover. (C) Application of plant growth regulators to promote wheat growth. Plant growth regulators can promote the growth of wheat, stimulate the growth and development of wheat, but also help reduce the damage. Commonly used detoxification drugs such as gibberellin, spraying 2 grams of water per mu, 50 kg of water evenly sprayed wheat seedlings, can stimulate the growth of wheat seedlings, reduce injury.

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Technical Data

Dcs-S Bagging Scale System

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