Causes of and Solutions for Yellow Leaves and Dry Tips in Garlic Sprouts

Garlic sprouts are a common vegetable and seasoning in daily life, often used as a side dish for flavoring, and they offer high economic returns when grown. However, yellow leaves and dry tips during cultivation severely affect the quality of garlic sprouts and reduce economic returns, so what causes yellow leaves and dry tips in garlic sprouts? And how should you deal with them?

I. What causes yellow leaves and dry tips in garlic sprouts

1. Continuous cropping on the same land year after year

Continuous cropping on the same land year after year causes pests and pathogens in the soil to accumulate continuously, leading to a higher incidence and greater severity of pests and diseases, while nutrients in the soil are constantly depleted, causing weak plant growth and reduced stress resistance to the environment, resulting in yellow leaves and dry tips.

2. Improper sowing time

Garlic is a crop that prefers cool conditions, with a suitable growing temperature of 12-16 degrees. As the global climate warms, the temperatures at what used to be the suitable sowing time are constantly changing, and seedlings become too large before winter, consuming too many nutrients, making them prone to yellow leaves and dry tips; the cold tolerance of garlic sprouts decreases, making them susceptible to freezing damage and premature aging in spring.

3. Impact of pests and diseases

Garlic maggots are a common and major pest during garlic sprout cultivation. They are saprophagous pests, and when they cause damage, garlic sprouts are highly prone to yellow leaves and dry tips. In addition, improper cultivation management can lead to plants being infected by diseases, producing yellow leaves and premature aging, affecting yield and quality.

4. Lack of nutrients

Garlic sprouts have a relatively shallow root system and weak absorption capacity, so they have high requirements for soil fertility, especially for nitrogen and potassium. If fertility is lacking during cultivation, it will cause insufficient nutrition in the plants and result in yellow leaves and dry tips.

II. What to do about yellow leaves and dry tips in garlic sprouts

1. Reasonable crop rotation

Do not rotate with crops of the onion, ginger and garlic family when planting, as this can disrupt the living environment of pests and pathogens, reducing the incidence and severity of pests and diseases. When planting, increase the application of organic fertilizer to maintain organic elements in the soil so that the plants grow robustly.

2. Sow when the temperature is suitable

The previous sowing time should be postponed for a period, with the specific time depending on the local climate. Generally, sow when the temperature is around 20 degrees. If using a greenhouse or plastic film mulch, delay by about one more week.

3. Prevent and control pests and diseases

Garlic maggots mainly occur because farmyard manure applied to the plants is not fully decomposed, and the maggots breed and grow in it, then harm the plants. Therefore, the best control method is to ensure that farmyard manure applied must be fully decomposed. In addition, attention must be paid to disease prevention and control, and diseases should be treated promptly when found.

4. Reasonable fertilization

When fertilizing, base it mainly on organic fertilizer or farmyard manure, with chemical fertilizer as a supplement. Do not apply too much each time, to avoid excessive nutrition, which can also cause yellow leaves. Pay attention to the reasonable combined use of nitrogen, phosphorus and potassium fertilizers. Apply sufficient base fertilizer before sowing, generally applying 4000-5000kg of farmyard manure per mu, combined with 50kg of phosphate fertilizer, 30kg of potassium fertilizer, and 20kg of urea. Later, topdress reasonably according to plant growth conditions. If yellow leaves are found, spraying foliar fertilizer can achieve excellent results.

The above is Tuliu.com's introduction to the causes of and control methods for yellow leaves and dry tips in garlic sprouts. Garlic sprout cultivation offers high economic returns, but during cultivation you must pay attention to reasonable crop rotation, sowing when the temperature is suitable, preventing and controlling pests and diseases, and reasonable fertilization, so that you can grow them well and obtain good returns.