Pesticides play a very important role in the production of agriculture, but also have more or less adverse effects on crops. If such unfavorable effects are aggravated, they cause crops to respond abnormally, resulting in reduced yields and declining quality. Phytotoxicity. There are several kinds of symptoms that can be summed up as follows: First, the spots of this kind of injury are mainly reflected in the leaves, there are yellow spots, brown spots, dead spots and so on. If butachlor is used to cause brown spots in the early stage of rice field application, a high concentration of mancozeb may cause spots on the edges of rice leaves. Sometimes the spots also appear on stems and fruits, such as small pears when applied mancozeb prone to fruit surface spots. Second, the cause of yellowing and yellowing is that pesticides hinder the synthesis of chlorophyll, or block the photosynthesis of chlorophyll, or destroy chlorophyll, such as rapid extermination and killing on the watermelon caused by the new shoot yellow; Tribenurum for wheat fields Yellowing appeared on other crops. Third, all organs of malformed plants may have this phytotoxicity. Common deformities include leaf curling, tufting, root swelling, malformed ear, malformed fruit, etc. If tomatoes are sprayed with high concentrations of naphthylacetate, leaf curling will occur, hollow fruit, and malformed fruit will appear as a result of improper application of 2,4-D; ,4-D injury occurred fan-shaped leaves, the low purity of triacontanol tends to curl the tomato leaves. 4. Withering, the whole plant performance is generally caused by herbicides. For example, the watermelon seedlings are damaged by chlorotoluron, yellow leaves appear on the leaves, and the leaf edges are scorched and atrophied; the beans are sprayed with high concentrations of pesticides. Garlic, wilt, dead seedlings and other phytotoxicity appear. Fifth, stagnation of growth inhibitors, herbicides improper application of phytotoxicity, such as excessive use of chlormechanine caused crop growth stagnation. Six, infertility caused by this kind of injury is due to improper use of flowering, such as the application of rice feet in rice heading will cause empty grains. VII. Shedding occurs frequently on fruit trees and other dicotyledonous plants, such as flowering, defoliation, fruit dropping, etc., such as the application of isocarbophos in peach trees and omethoate in the flowering period to cause defoliation, or defoliation under the influence of copper preparations; Methamidophos caused the drop; improper application of ethephon in hawthorn caused fruit drop and defoliation. VIII. Injuries in the fruit of a bad fruit sometimes manifest as an abnormality in the fruit surface, and the quality deteriorates. For example, a watermelon is harmed by an ethylene drug, and the melon mushroom is dark red and has an odor. JRT usb interface distance sensor board adds a USB port to a Laser Distance Sensor, inexpensive laser distance measurement sensors, allowing customers directly using GBeacon-2.3-Fx.exe software to control the rangefinder sensor. Usb laser distance sensors are the the most popular model devices, it works by measuring the phase of an visible-red laser beam that reflects on the target. Usually, customers would like to choose CH341SER.EXE version to test. USB Laser Distance Sensor,Distance Sensor,Laser Distance Sensor,Distance Measurement Sensors Chengdu JRT Meter Technology Co., Ltd , https://www.accuracysensor.com
What are the common crop injury?
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