Methods for treating yellowing garlic leaves: loosen the soil, apply fertilizer, and add moisture.

1. Loose soil

Cause analysis: If the soil where garlic is grown is too hard, it is not conducive to ventilation and drainage, and hinders the breathing of the roots. In addition, hard soil will prevent the water and fertilizers from penetrating into the soil well, and the garlic roots will not be able to absorb nutrients in time. If nutrients are not delivered in time, the leaves of garlic will slowly start to turn yellow.

Solution: When this happens, turn over the soil, loosen the soil, and loosen the soil in time to increase the softness, air permeability and drainage of the soil, so that water and nutrients can penetrate in time, so that the garlic roots can Good for absorption.

2. Apply fertilizer

Cause analysis: During the growth period of the garlic seedlings, if there is a lack of nitrogen fertilizer, the old leaves of the garlic will turn yellow. If there is a lack of potassium fertilizer, garlic leaves will become dry. If there is a lack of calcium, spots will appear on its leaves, and the heart leaves will turn yellow. In more serious cases, the leaf tips will die. If there is a lack of magnesium, its leaves will gradually turn yellow from the bottom upward.

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

3. Supplement water

Cause analysis: If garlic is not watered for a long time during its daily growth period, causing it to suffer from water shortage, it may also cause it Yellow leaves appear.

Solution: Pour some water into the soil where the garlic is planted to replenish it with moisture. But be careful not to water too much at once. Add water to the soil in small amounts and multiple times.

Introduction to garlic

Garlic is a perennial herbaceous plant of the Liliaceae family. It can irritate the gastric mucosa. It is divided into hard-leaf garlic and soft-leaf garlic. It is the most common garlic in China. It belongs to the hard-leaf garlic branch.

Usually composed of many fleshy, petal-shaped small bulbs closely arranged, with several layers of white to purple membranous bulb skin on the outside; the leaves are broadly strip-shaped to strip-lanceolate, flat; The scape is solid, cylindrical, the involucre falls early, the umbel is densely packed with bulbils, and there are several flowers in between. The small pedicels are slender, the oval bracts are large, the flowers are often light red, and the style does not extend outside the perianth; the flowering period is July .

Garlic is native to western Asia or Europe. Around the second year of Jianyuan (139 BC) of Emperor Wu of the Western Han Dynasty, garlic was brought to China by Zhang Qian. It has a long history of cultivation in the world and is commonly cultivated in northern and southern China. When garlic is damaged, it will immediately decompose the pungent allicin and release the strong smell of sulfide. This is its naturally evolved self-defense and protection mechanism.

The above content refers to Baidu Encyclopedia - Garlic (Liliaceae Allium)