What s going on with the yellowing of garlic leaves, and what are the reasons for yellowing of garli

There are many reasons for the yellowing of garlic leaves, if the soil compaction makes it difficult for the roots to absorb nutrients due to water and fertilizer can not penetrate well, it is necessary to loosen the soil in time. If it is due to the lack of nitrogen fertilizer and potassium fertilizer, it is necessary to top dressing in time according to the actual situation and control the amount of fertilizer. If the root burn is caused by excessive fertilization, the soil should be watered with water in time to alleviate the fertilizer damage.

If it is caused by leaf blight, garlic gray mold and garlic maggots, it is necessary to prescribe the right medicine and prevent it in time.

1.Loose soil.

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.

2.Top dressing to an appropriate amount.

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.

3.Alleviate fertilizer damage.

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.

4.Control pests and diseases.

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.

Find out the cause of the yellowing of garlic leaves first.

If the soil is compacted and not breathable.

It is necessary to do a good job of turning over the soil and changing the soil, if it is caused by a lack of fertilizer, apply fertilizer to irrigate.

There are some problems with the roots of garlic seedlings, garlic seedlings lack water, lack of fertilizer, and it is also possible that garlic seedlings have some diseases that cause the leaves to turn yellow. You can buy some pesticides to water on the roots of garlic, you can water more, and more fertilization can be improved.

The causes of yellowing of garlic leaves can be divided into two aspects: physiological causes and pathological causes. Physiological: Nitrogen deficiency, potassium deficiency, calcium deficiency, magnesium deficiency, etc. will cause garlic leaves to turn yellow, you can spray Bika foliar fertilizer to supplement nutrients, or fertilizer damage, pesticide damage and other management reasons, temperature, humidity and soil and other environmental factors will also cause garlic leaves to yellow.

Pathology: Blight, leaf blight, bacterial soft rot, etc. may cause garlic leaves to turn yellow.

Because of too much chemical fertilizer, long-term continuous cropping, or too deep planting, caused by pests and diseases, we must properly water, proper fertilization, pay attention to pest prevention, and pay attention to spraying pesticides.

What to do if the garlic leaves turn yellow is as follows:

1. The soil is too hard for garlic to absorb nutrients, resulting in yellow garlic leaves.

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

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

Solution: In this case, the soil should be turned over in time, loosened the soil, loosened the soil, and increased the softness, air permeability and drainage of the soil, so that the water and nutrients can be infiltrated in time, so that the garlic roots are conducive to absorption.

2. To top dressing, insufficient nutrition, lack of nutrients, resulting in yellowing of garlic leaves.

Reason analysis: In the growth period of planted garlic seedlings, if there is a lack of nitrogen fertilizer, the old leaves of garlic will turn yellow. If potassium is lacking, the leaves of garlic will dry out.

If there is a lack of calcium, there will be spots on its leaves, the heart leaves will be yellow, and in more severe cases, the tips of the leaves will die, and if there is a lack of magnesium, its leaves will gradually turn yellow from the bottom up.

Solution: Observe the growth of garlic regularly, apply fertilizer according to the actual situation, pay attention to the amount of chemical fertilizer when applying, and not apply too much, especially nitrogen fertilizer.

3. Lack of water causes garlic leaves to turn yellow.

Cause analysis: If garlic is not watered for a long time during the daily growth period, so that it has the problem of lack of water, then it may also cause it to appear yellow leaves.

Solution: Pour some water into the soil where the garlic is grown to hydrate it. But be careful not to water too much at once, and add water to the soil in small amounts and many times.

Yellowing of garlic leaves can be caused by impermeable soil or lack of fertilizer. The cause of yellowing of the leaves should be identified first and targeted to be solved. If the soil is not breathable, it is necessary to do a good job of turning and changing the soil, so that its roots can breathe smoothly.

If it is caused by a lack of fertilizer, it is necessary to apply fertilizer according to the situation, but the amount of ammonia fertilizer should not be too much. If it is caused by excessive fertilization, irrigation should be carried out to dilute the fertilizer.