Matters needing attention in using Fungicides in Cotton Seedling stage
First, when choosing fungicides, it is necessary to find out the properties of fungicides. There are two types of fungicides, one is protective agent, this kind of fungicide is to prevent plant disease, such as Bordeaux solution, mancozeb, carbendazim, etc.; the other is therapeutic agent, which is applied after plant disease, in order to kill or inhibit the pathogens invading the plant, the therapeutic agent has a better effect in the early stage of the disease, such as Kangkuning, Baozhida and other compound fungicides.
Fungicides should be sprayed before 9: 00 a.m. or after 4: 00 p.m. If sprayed in the hot sun, the chemical is easy to decompose and evaporate, which is not conducive to crop absorption.
Fungicides should not be mixed with alkaline pesticides. Can not increase or reduce the use of fungicides at will, and should be used with.
Fourth, fungicides are mostly powders, emulsions and colloidal suspensions, which must be diluted before application. When diluting, put the medicine first, then to the water, and then stir with a stick. When mixed with other pesticides, fungicides should be diluted first and then mixed with other pesticides.
The interval between the use of fungicides and spraying is 710 days. For agents with weak adhesion and poor internal absorption, it should be re-sprayed in case of rain within 3 hours after spraying.
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Control measures of Cotton Seedling Disease after Rain at Seedling stage
In the case of rainfall in cotton seedling stage, the disease is easy to break out and spread. Light pathogens infect the leaves, and the disease spots affect the photosynthesis of leaves, which leads to late occurrence of cotton seedlings, and serious ones lead to rotten buds and rotten roots, forming diseased or dead seedlings. Humic acid foliar fertilizer should be sprayed twice after cotton emergence to improve the low temperature resistance and disease resistance of cotton seedlings. Spraying 50% carbendazim or 70% methyl thiophanate wettable powder 800 times + 70% mancozeb 600 times, or spraying and irrigating roots with 3000 times of carbendazim at seedling stage.
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Cotton vas deferens get twice the result with half the effort at seedling stage
& nbsp & nbsp on May 25, at the invitation of the Guangzong Service Station of the Cotton Committee of the China Agricultural Technology Association, I went to Gaojiazhuang, Fengjiazhai Township, Guangzong to see the cotton fields and discussed the current management technology with the farmers. Guangzong County, adjacent to Weixian County, is a dry zone with less rain and more sand in the central and southern part of Hebei Province, which is very suitable for growing cotton and is one of the key cotton producing counties. At present, the seedling situation is growing well, there are 4 true leaves, and the seedlings are basically disease-free; some near the tree edge are damaged by cotton bug bugs, and a few cotton seedlings have cotton aphids, and the villagers have carried out control. Due to the adoption of
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