Management Methods for Welsh Onions During Hot and Rainy Summer Weather
How to manage Welsh onions during hot and rainy summer weather? Please advise, thank you. Promoting root growth in the early stage is the foundation. After Welsh onions are transplanted, when the soil temperature is relatively high, the physiological function of the root system is very weak, and the plants recover slowly from transplanting, so they should not be watered too much. When it is very dry, a small amount of water can be applied; when it rains, pay attention to drainage and waterlogging prevention, and promptly hoe and loosen the soil after rain, so as to drain moisture and improve aeration...
How to manage Welsh onions during hot and rainy summer weather? Please advise, thank you.
Promoting root growth in the early stage is the foundation. After Welsh onions are transplanted, when the soil temperature is relatively high, the physiological function of the root system is very weak, and the plants recover slowly from transplanting, so they should not be watered too much. When it is very dry, a small amount of water can be applied; when it rains, pay attention to drainage and waterlogging prevention, and promptly hoe and loosen the soil after rain, so as to drain moisture and improve aeration and prevent root rot from waterlogging. After the Beginning of Autumn, nighttime temperatures drop noticeably, so the frequency of watering should be increased to keep the soil surface moist. Watering in the early morning and evening is best, as this can accelerate plant growth.
Earth up and topdress to achieve high yields. After Welsh onions recover from transplanting, they should be earthed up lightly, that is, just level the planting trench, which can prevent lodging and water accumulation. After the Beginning of Autumn, earth up once every 15 days, 3 to 4 times in total, which is a key measure to increase the length of the white stalk. Earth up when the soil temperature is low, and do not earth up when the soil temperature is high; the height of the earth should be such that the heart leaves are not buried. Topdressing should grasp two points: first, the fertilizer should be mainly nitrogen fertilizer, appropriately supplemented with phosphorus and potassium fertilizer. Second, apply less first and more later, that is, for the first topdressing after the Beginning of Autumn, apply 10 kg of urea and 5 to 10 kg of compound fertilizer per mu; in early September when the weather is cool, apply 15 kg of urea and 15 kg of compound fertilizer per mu.
Promoting root growth in the early stage is the foundation. After Welsh onions are transplanted, when the soil temperature is relatively high, the physiological function of the root system is very weak, and the plants recover slowly from transplanting, so they should not be watered too much. When it is very dry, a small amount of water can be applied; when it rains, pay attention to drainage and waterlogging prevention, and promptly hoe and loosen the soil after rain, so as to drain moisture and improve aeration and prevent root rot from waterlogging. After the Beginning of Autumn, nighttime temperatures drop noticeably, so the frequency of watering should be increased to keep the soil surface moist. Watering in the early morning and evening is best, as this can accelerate plant growth.
Earth up and topdress to achieve high yields. After Welsh onions recover from transplanting, they should be earthed up lightly, that is, just level the planting trench, which can prevent lodging and water accumulation. After the Beginning of Autumn, earth up once every 15 days, 3 to 4 times in total, which is a key measure to increase the length of the white stalk. Earth up when the soil temperature is low, and do not earth up when the soil temperature is high; the height of the earth should be such that the heart leaves are not buried. Topdressing should grasp two points: first, the fertilizer should be mainly nitrogen fertilizer, appropriately supplemented with phosphorus and potassium fertilizer. Second, apply less first and more later, that is, for the first topdressing after the Beginning of Autumn, apply 10 kg of urea and 5 to 10 kg of compound fertilizer per mu; in early September when the weather is cool, apply 15 kg of urea and 15 kg of compound fertilizer per mu.
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