Causes and control methods of dry tip of yellow leaves of garlic seedlings

Garlic sprouts are common vegetables and condiments in life. They have rich fragrance and are often used as auxiliary vegetables for seasoning. They are planted in a wide range and area, and have high economic benefits. However, the phenomenon that makes farmers upset is yellow leaves and dry tips, which seriously affects the quality of garlic sprouts and reduces economic benefits. So what is the cause of garlic sprouts yellow leaf dry tip? How to prevent it? Let's take a look at the detailed introduction of pro-agricultural network together.

1. Continuous cropping

Successive cropping will make the accumulation of pests and germs in the soil, resulting in serious occurrence rate and serious disease, and the continuous consumption of nutrients in the soil, resulting in weak plant growth, decreased resistance to the environment, and the phenomenon of yellow leaves and dry tips.

Control methods: reasonable crop rotation, planting not with onion, ginger and garlic crops rotation, this can destroy the living environment of pests and bacteria, reduce the incidence of diseases and insect pests and serious disease, planting to increase the application of organic fertilizer, maintain the organic elements in the soil, make it healthy growth.

2. Improper sowing time

Garlic is a cold-loving crop, suitable for growth temperature in 12-16 degrees, with global warming, the previous suitable sowing time temperature is constantly changing, the seedlings before winter are too large, nutrient consumption is too large, easy yellow leaves dry tip, garlic seedlings cold resistance reduced, vulnerable to freezing damage, premature senescence in spring.

Prevention and control methods: so in the previous sowing time but also a period of time, the specific time according to the local climate, generally in the temperature of about 20 degrees when sowing, if it is greenhouse and plastic film, but also delayed a week or so.

3. Diseases and pests

Garlic maggot is a common pest in garlic seedling planting, but also the main pest, it is a putressive-eating pests, in the harm of garlic seedlings easily appear yellow leaf dry tip phenomenon. In addition, improper cultivation and management will lead to plant infection, yellow leaves, premature senescence, and affect yield and quality.

Control methods: garlic maggots are mainly plants applied farm manure is not completely decomposed, maggots in which reproduction and growth, and then harm plants, so that the best control method is to apply farm manure must be completely decomposed, in addition to disease control work should also pay attention to, found disease timely treatment.

4. Lack of nutrition

The root system of garlic seedlings is shallow and the absorption capacity is weak, so the soil fertility requirements are high, especially nitrogen and potassium elements. The lack of fertility in planting leads to insufficient nutrition of plants and causes yellow leaves to dry and tip.

Control methods: rational fertilization, fertilization with organic fertilizer or farm manure as the main, chemical fertilizer as a supplement, each application amount is not too much, so as to avoid excessive nutrition phenomenon, but also cause yellow leaf phenomenon, nitrogen, phosphorus and potassium fertilizer rational use. Before sowing, apply enough base fertilizer, generally apply farm manure 4000-5000kg per mu, match phosphorus fertilizer 50kg, potassium fertilizer 30kg, urea 20kg, late according to the plant growth condition reasonable topdressing, found yellow leaf phenomenon, spraying foliar fertilizer can achieve excellent results.

The above is the reason and prevention method of garlic seedling yellow leaf dry tip brought by pro-agricultural network. I hope it can help you. If you want to know more about relevant knowledge, please pay attention to pro-agricultural network.