What are the methods of prevention and control of pear diseases and insect pests in winter?
What are the pear diseases and insect pests in winter? What are the methods of prevention and control of pear diseases and insect pests in winter? Also ask experienced netizens to help introduce the main pear diseases and insect pests in winter, such as pear weevil, pear fruit bee, pear gall midge, pear scab, pear black spot, red yellow spider, shell insect and so on. The farming net has sorted out the control methods according to the above diseases and insect pests. The following detailed lists are listed for netizens' reference. Pear pest control methods in winter: method 1. Spraying pesticide on the ground of pear orchard: overwintering adult emergence stage, pear gall midge from mid-March to the end of March, pear fruit wasp from the end of March to early April, and pear weevil in the first and middle of April. The drug was applied at the beginning of the excavation. 5% trichlorfon powder 4 kg per mu, mixed with fine soil or fine sand, sprinkled in the crown dripping line between rows, the effect is better. After application, if there is light rain or showers, the effect will be more obvious. Method 2. Spray the pear tree crown: in the pear weevil damage period, pear wasp and pear gall midge unearthed peak period, pesticide control can play the role of pre-control and post-control. To control pear weevil, 90% crystal trichlorfon or 2.5% EC can be used to control pear weevil, 2000 times of 20% EC or 1200 times of 40% omethoate can be used to control pear wasp, and 2000 times of 25% dimethoate can be used to control pear gall midge. Red and yellow spiders can be controlled alternately with red and white egg mites, egg mites, mites must be killed and other drugs. The control of shell insects can be carried out by killing phosphorus or dead scale and other drugs in time after fruit harvest. Control methods of pear tree diseases in winter: pear scab and pear black spot can be controlled by spraying in time after pear fruit is harvested. Dysen zinc, Fuxing and Bordeaux solution (1 jin of quicklime, 2 jin of copper sulfate, 200 jin of water) can be used alternately. Click for more pear tree planting techniques click to get more fruit planting techniques
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How to prevent and cure walnut anthracnose?
What harm does anthracnose do to walnuts? How to prevent and cure walnut anthracnose? Also ask experienced netizens to help introduce the harm and control methods of walnut anthracnose in the farming network, which are listed in detail below for netizens' reference. The harm of walnut anthracnose: anthracnose usually occurs in June-August, in the rain.
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What are the pruning techniques of pear trees in winter? Video introduction
What are the pruning techniques of pear trees in winter? How to prune pear trees in winter? Also ask experienced netizens to help introduce that pear tree winter pruning is pruning after pear leaves fall to before sprouting. The main purpose is to cultivate pear tree shape, adjust pear crown structure, cultivate pear fruiting branch group, adjust pear flower bud quantity and adjust.
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