What Causes Dead Welsh Onion Plants? Analysis of the Latest Control Measures

The Welsh onion is one of the common vegetables, drought-tolerant and highly adaptable, and it is cultivated all over the country, but during cultivation dead plants often appear, bringing economic losses to farmers. So what causes dead Welsh onion plants? How should they be controlled? Let's take a look.

1. Causes of dead Welsh onion plants

1. High humidity

The leaf surface of the Welsh onion has a layer of wax, whose main function is to prevent water loss, and transpiration is low. In summer and autumn there are many rainy days with high air humidity, which suppresses leaf transpiration, so the absorption capacity of the root system weakens and the nutrients absorbed are greatly reduced. When the plant suffers from a lack of nutrients, dead plants result, and it also worsens the severity of disease, leading to even more dead plants.

2. Disease

Because of many years of continuous cropping on the same land, soil-borne disease transmission is relatively serious, causing large outbreaks of soft rot, Fusarium wilt, root rot and other diseases. Together with moist soil, the condition worsens and more plants die.

3. Insect pests

Because wheat straw and wheat husks are soaked and burned in the field, large numbers of scarab beetles lay eggs and survive in the soil. In this situation, pest control should be strengthened, but many farmers neglect the breeding of pests, leading to underground pest outbreaks that bite many plants to death.

2. Control measures

1. Rational crop rotation

When planting, choose soil rich in organic matter, with a deep soil layer, high and dry terrain and good drainage, and the first crop should not be an onion-type crop. Apply enough base fertilizer together with land preparation, then make beds or ridges, and promptly spray disinfectant agents and New High-fat Film to disinfect and sterilize the soil.

2. Rational planting

Plant strictly according to the requirements, with rational close planting, and at the same time do a good job of earthing up and seedling recovery management, spraying New High-fat Film to conserve internal soil moisture, prevent external waterlogging, preserve fertilizer efficiency and promote new roots, and at the same time drain water in time to avoid waterlogging in the field causing root rot and dead plants.

3. Strengthen management

During the stage when Welsh onion plants are dying, replenish fertilizer and water in time, especially elements such as nitrogen, phosphorus, potassium and calcium, and pay particular attention to promoting roots, strengthening the plants and earthing up for yield. During the white stalk formation period, spray Diguo Zhuangtiling so that the underground fruit transport ducts become thicker, improving the swelling vigor of the underground roots and stems for high quality and high yield.

4. Pest and disease control

The diseases of the Welsh onion include downy mildew, black mold and purple blotch, and the pests include leafminers and root maggots. Spray targeted control agents, plus New High-fat Film, to improve the utilization rate of pesticides, and at the same time enhance the ability to resist disasters, reduce the amount of pesticide and chemical fertilizer used, and lower pesticide residues.

The above is an introduction to the causes of dead Welsh onion plants and the control measures. We hope it helps you. If you want to learn more related knowledge, please follow us.