Plant garlic must be disease and pest control technology!

What are the common diseases and insect pests of garlic? How to prevent and cure it? The following will be introduced separately.

1. Grey mold

1. Disease-resistant varieties were selected. It is reported that the high-footed varieties of Cangshan garlic have strong resistance, followed by Puzhu and Lushan white, Ershuizao, Jiading white garlic and Anqiu garlic. The susceptible varieties are Brown garlic and Soviet Red garlic No.2.

2. Choose the area with low groundwater level and good soil drainage to plant. Leveling the border and setting up drainage ditches to prevent and control stagnant water in the field.

3. Applying organic fertilizer as base fertilizer, increasing phosphorus and potassium fertilizer, avoiding excessive application of nitrogen fertilizer and irrigation, reasonable close planting and preventing overgrowth of plants.

4. After finding the central diseased plant in the field, pull out and spray 1500 times of 50% Sukeling wettable powder, or 1000 times of 50% prohydantoin wettable powder and 1500 times of 50% imipramine. Spraying 500 times of 70% mancozeb wettable powder or 800 times of 70% methyl thiophanate wettable powder, spraying once every 7-8 days, 2-3 times in succession, the effect is better.

5. The cold storage of garlic bolts and the shelves therein shall be sterilized by spraying 1%-2% formalin solution or 0.3%-0.5% bleach solution before use.

2. Leaf blight

2. Strengthen the work of field drainage and soil loosening and soil moisture conservation, reduce field humidity, control disease conditions, avoid damage to leaves during field operation, so as to reduce wounds.

3. Diseased plants are found in time, collected and burned or buried deeply.

4. Before sowing, the seed valve is soaked in 40% 50% warm water for one and a half hours to prevent the seed valve from carrying bacteria.

5. After the central diseased plant is found, spray 50% thiophanate wettable powder 500 times 600 times liquid, or 75% chlorothalonil wettable powder 500 times liquid, or 50% dicumazole powder 1000 times liquid, or 10% ether methoconazole wettable powder 3000 times liquid. In order to enhance the adhesion of the liquid on the leaves, 0.1% washing powder can be added to the solution. Choose 70% mancozeb wettable powder 500 times liquid, spray every 7-10 days, a total of 2-3 times, alternate application, the effect is better.

3. Purple spot disease

1. Before sowing, the seed valve is soaked in 40-45 ℃ warm water for 1.5 hours, or the seed is mixed with 50% carbendazim powder, the dosage is 0.5% of the seed valve weight, or the seed is soaked in 40% carbendazim glue suspension 50 times solution for 4 hours to prevent the seed valve from carrying bacteria.

2. 3-4 years rotation should be carried out to avoid continuous cropping with onion and garlic vegetables.

3. Spray 70% mancozeb wettable powder 400 times liquid, or 75% chlorothalonil wettable powder 500 times liquid, or 40% germicidal Dan wettable powder 400 times liquid, or 64% poison alum M8 wettable powder 400 times liquid.

IV. White rot

1. Avoid continuous cropping and practice rotation for 3-4 years.

2. Select the land with low groundwater level and good drainage to plant garlic, strengthen the loosening soil to preserve soil moisture and reduce the surface humidity.

3. Often carry on the field inspection, find the central diseased plant in time, dig out the root soil and bury it deeply when the sclerotia is not formed.

4. Before sowing, the seed valve is mixed with 15% of the powder rather than wettable powder, or 50% methyl topiramate wettable powder, and the dosage is 0.3% of the weight of the seed valve. The method of seed dressing is to dissolve the powder with an appropriate amount of water, spray and mix the seed valve in a sprayer, dry and sow the seed.

5. In the early stage of the disease in the field, spray 50% Sukeling wettable powder 1500-2000 times, or 50% carbendazim wettable powder 400-500 times. 1000 times the solution of 50% Pythium wettable powder.

Virus disease: the application of carbendazim wettable powder, sprayed every 7-10 days, a total of 2-3 times, alternate application, the effect is better.

Aphids: 10% imidacloprid wettable powder 3000-4000 times solution can be used to control aphids for 2 times in a row, each time at intervals of 5-7 days.

Transferred from China's good agricultural materials, source: Internet, copyright belongs to the original author, if copyright issues are involved, please let us know.

Pesticide assistant