Summer and autumn seasons are hot and rainy, and in case of continuous rainy weather, green onions are susceptible to rust, and farmers’ friends should take effective measures to strengthen prevention and control.
Timely medication prevention and treatment In summer and fall season, especially after encountering continuous rain for 2-3 days, timely check the occurrence of green onion rust. If it is found on the onion leaves have brown-green spots, it is necessary to fight drugs immediately, generally available 25% triadimefon EC 3000 times the liquid, plus a quarter of detergent powder, spray fine mist with a sprayer, after the first application of pesticides, prevent and control again after 7-10 days, in order to improve the disease prevention effect.
To improve the disease resistance ability of scallions In addition to doing field management such as drought resistance and waterlogging, in the summer and fall seasons, 15-20 kg of ammonium bicarbonate can be applied per acre of land to promote the development of onion and resistance to diseases.
Before transplanting, apply enough basal fertilizer per acre of onion field to treat 3,000 kg of pig manure, 45% of NPK fertilizer, 25 kg, and then transfer the young scallions after turning it over.
Reasonable crop rotation in the same area, do not even plant green shallots, generally should be changed every year. In the absence of rotation conditions, after the occurrence of rust, the next year can no longer continue to plant green onions.
Timely medication prevention and treatment In summer and fall season, especially after encountering continuous rain for 2-3 days, timely check the occurrence of green onion rust. If it is found on the onion leaves have brown-green spots, it is necessary to fight drugs immediately, generally available 25% triadimefon EC 3000 times the liquid, plus a quarter of detergent powder, spray fine mist with a sprayer, after the first application of pesticides, prevent and control again after 7-10 days, in order to improve the disease prevention effect.
To improve the disease resistance ability of scallions In addition to doing field management such as drought resistance and waterlogging, in the summer and fall seasons, 15-20 kg of ammonium bicarbonate can be applied per acre of land to promote the development of onion and resistance to diseases.
Before transplanting, apply enough basal fertilizer per acre of onion field to treat 3,000 kg of pig manure, 45% of NPK fertilizer, 25 kg, and then transfer the young scallions after turning it over.
Reasonable crop rotation in the same area, do not even plant green shallots, generally should be changed every year. In the absence of rotation conditions, after the occurrence of rust, the next year can no longer continue to plant green onions.
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