Tutorial on the Latest Field Management Techniques for Welsh Onions

The Welsh onion is indispensable as both a staple and a vegetable in daily life, and it is essential when stir-frying dishes. Its vitamin content is extremely high, it can effectively prevent certain diseases, and it can also relieve fatigue. The process of growing Welsh onions is relatively simple. In order to achieve high yields, field management techniques are very important. Below, let us take a look together at the field management techniques for Welsh onions.

1. Watering

After the Welsh onion is transplanted, it enters the high-temperature period of summer. At this time, the key point of management is to promote root growth. Watering should be controlled, and after rain, drainage should be carried out to prevent waterlogging, so as to avoid root rot, yellow leaves, and dead seedlings. At the same time, intertillage should be strengthened to promote root growth. From the Beginning of Autumn to White Dew, the principle for watering should be light watering and watering in the morning and evening. After the Welsh onion enters the peak growth period, the principle for watering should be frequent and heavy watering, watering once every 5 days. After Frost's Descent, the temperature is lower. At this time, the Welsh onion has basically grown to full size, and its water requirement is [reduced]; it is only necessary to keep the soil moist. Watering should be stopped 5-7 days before harvest to facilitate storage and transportation.

2. Topdressing

Before planting Welsh onions, in addition to applying sufficient base fertilizer, topdressing is also needed in stages. After the Beginning of Autumn, plant growth accelerates and the fertilizer requirement increases. At this time, 1500-2000 kg of decomposed farmyard manure and 20-25 kg of superphosphate should be applied to promote leaf growth. After White Dew, the plants enter the peak growth period of the scallion white, which is the key period for yield formation of Welsh onions. At this time, topdressing should be carried out twice in combination with watering, applying 15-20 kg of urea and 10-15 kg of potassium sulfate per mu each time, broadcast between the rows, followed by shallow intertillage and then watering.

3. Hilling

Hilling is done to soften the leaf sheaths and prevent lodging, and it is an important measure for increasing the yield and quality of Welsh onions. From the Beginning of Autumn to before harvest, generally 2-3 hillings are needed. The first two are carried out in combination with intertillage, pushing the ridge soil into the onion trench and filling the trench level.

4. Pest and Disease Control

Common pests and diseases of Welsh onions include downy mildew, black mold, purple blotch, leafminer, thrips, and root maggots. It is necessary to accurately grasp the occurrence periods and symptoms of pests and diseases, and vigorously promote the application of botanical pesticides, biological pesticides, or high-efficiency, low-toxicity, low-residue pesticides for timely green integrated prevention and control.

The above is an introduction to field management techniques for Welsh onions. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.