Spring wheat susceptible to pests and diseases
2022-08-23 08:04:49
Spring is a key period for wheat growth, and it is also a period of frequent disease and pests. Therefore, wheat spring management pays attention to the prevention and control of pests and diseases. The following 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, 10 to 20 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%.
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, 10 to 20 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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