What causes garlic leaves to turn yellow and dry? What to do?

Malnutrition can be properly topdressed in the early stage of garlic germination, so that garlic can better absorb nutrients and grow better.

Causes of yellowing and drying of garlic leaves: soil compaction, lack of fertilizer, water accumulation in the roots, disease impact, heavy cropping.

1. Soil compaction

The yellowing of garlic leaves may be due to the fact that the soil is too compact, resulting in poor respiration of the root system and affecting the growth of the leaves.

2. Lack of fertilizer

If there is a lack of nitrogen fertilizer in the growth period of garlic, it will cause the old leaves to turn yellow, and the lack of potassium fertilizer will lead to the drying of branches and leaves, so it is necessary to observe its growth state regularly during the planting period of the plant, and reasonably top dressing according to the actual situation to avoid excessive nitrogen fertilizer.

3. Water accumulation at the roots

Garlic should not grow in an excessively moist soil environment, if it is usually watered too much, or the rainy season does not discharge excess water in time, it will lead to root water rot, and the leaves will turn yellow, at this time to strengthen environmental ventilation, dry the water in the soil.

4. Disease impact

After garlic is infected with leaf blight, gray mold and other diseases, it will also cause yellowing of the leaves of the grinding dust, leaf blight can be prevented and controlled with carbendazim, and gray mold is carried out with metrichan or polycarb, which can be sprayed every 10-15 days.

5. Heavy crop planting

When planting garlic seedlings, if it is planted on the original land for a long time, without crop rotation, the soil will grow poorly due to the lack of trace elements, such as magnesium, molybdenum, sulfur, iron and other elements, which will lead to the dry and yellowing of the leaf tips during the growth period of garlic seedlings. If it is planted due to heavy cropping, it can be alleviated by adding organic fertilizer, calcium, magnesium and phosphorus fertilizer, and ferrous sulfate.

There are many reasons, such as infection with bacteria, or due to insufficient fertility, or it may be caused by lack of water.

This is due to the cause of the disease, or it is caused by the fact that it is very dry, depending on the specific variety.

It may be due to a lack of water, sometimes the temperature is too high and the leaves will dry out, or there may be poor growth.

Reason: If the soil where garlic is planted is too compact, it is not conducive to ventilation and drainage, and hinders the respiration of the roots. In addition, soil compaction will not allow watering and fertilizer to penetrate into the soil well, and the roots will not be able to absorb nutrients in time.

If the nutrients are not delivered in time, its leaves will start to turn yellow slowly.

Measures: It is necessary to turn over the soil in time, loosen the soil, loosen the soil, increase the softness, air permeability and drainage of the soil, so that the water and nutrients can be infiltrated in time and absorbed by the roots.

Reason: If garlic grows without nitrogen fertilizer, it will make the old leaves yellow. If there is a lack of potassium, its branches and leaves will dry up. If calcium is lacking, there will be some necrotic spots on the leaves, the heart leaves will be yellow, and in severe cases, the tips will die.

Measures: Observe the growth of garlic and apply fertilizer according to the actual situation, but not too much, especially nitrogen fertilizer.

Reason: When too much fertilization is applied, it is easy to burn the roots of garlic, affecting its nutrient absorption ability, causing the outer leaves to turn yellow.

Action: Irrigating twice with large amounts of water on consecutive sunny days absorbs the heat released by the fertilizer in the soil and is able to dilute fertility. In addition, you can also spray foliar fertilizer to supplement the deficiency caused by root burns in garlic.

You can also apply some functional fertilizers that promote rooting to help the root system germinate new roots quickly.

Causes: Leaf blight, garlic gray mold and garlic maggots can also make garlic leaves yellow.

Measures: Carbendazim can be sprayed to control leaf blight. For garlic gray mold, you can use drugs such as chlormethalin and domethoxycarb**.

For garlic maggots, the prevention and control should be more timely, and 90% of the 600 times solution of trichlorfon can be used for irrigation treatment, and it can be watered every ten to fifteen days.