Here are some common wheat pests and diseases in spring and their control methods:
Wheat rust and powdery mildew: In areas where the disease is serious and the formation of obvious disease centers, it is necessary to fight drugs in a timely manner and control the spread. Use 15% of the rust-free 40-50 grams per acre, add 10-12 kilograms of water, and use a motorized sprayer to fight the medicine. Wheat leaves within 2-4 meters. If the spray is late, the dosage per acre can be increased to 60-70 grams.
Wheat scab: After the onset, it should be attacked and controlled. Use 80% of carbendazim micropowder for 25g per acre, or 50g of 40% carbendazim suspension. It can be used once in the flowering period. Take another medicine.
McMug: More than 500 heads per hundred ears of wheat, when the ratio of beneficial insects to wheat bran is more than 1 to 100, 10 grams of imidacloprid 10 grams per acre, plus 10 kilograms of water spray, harmless to natural enemies. 40% omethoate can also be used, 30 ml per acre plus 10 kg of water spray.
Mai Spider: The spider is perched around the wheat roots during the day and can be drowned by watering after 9 o'clock in the afternoon. When investigating 33 cm double rows with more than 200 wheat spiders, there may be 80% dichlorvos, 1020 ml per mu plus 10 kg of water spray. It can also be sprayed with a broom-killing pesticide such as broom, red and white.
Wheat larvae: The larvae usually live in the soil and come out to harm the ears in a short time. In late April, 50% phoxim or 40% methyl ethion can be used to form a poisonous sand with 250 grams per acre. The control effect can reach about 90%.
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