Reasons for and solutions to yellowing leaves on lemon trees

Lemons taste extremely sour, and because they have beauty-enhancing and skincare benefits, they are extremely popular among women and pregnant women. In addition, they can be used to make seasonings, cosmetics and medicines, so their uses are wide-ranging. Rich in vitamin C, they have the effect of strengthening the stomach and relieving coughs, and they are grown over a very wide area in our country, but many fruit growers find when planting that lemon tree leaves begin to turn yellow. What is going on here? Come to QinNongNet and take a look at the reasons why lemon tree leaves turn yellow.

1. Iron or nitrogen deficiency

When a lemon tree lacks iron or nitrogen, its leaves turn yellow, and it is fairly easy to determine which element is lacking. If iron is lacking, the mesophyll tissue of the leaves generally turns yellow; while if nitrogen is lacking, the leaf veins turn yellow. So by observing carefully, you can distinguish well whether iron or nitrogen is lacking.

Solution: After identifying the problem, apply the corresponding fertilizer. If the yellowing occurs at the seedling stage, pay attention to the concentration when fertilizing, so that the heat released as the fertilizer breaks down does not damage the seedling roots. It is best to water when fertilizing, as this allows rapid absorption.

2. Malnutrition

Just like iron and nitrogen deficiency, when the plant lacks nutrients, the nutrient supply cannot keep up after flowering, causing the leaves to turn yellow and drop.

Solution: When this happens, first spray a potassium dihydrogen phosphate solution. This solution is not only rich in the conventional elements nitrogen, phosphorus and potassium, but also contains other trace elements, and can provide well for what the lemon tree needs to grow.

3. Root rot

Improper watering and long periods of rainy weather cause too much water to accumulate in the soil, which easily leads to soil compaction and poor permeability. The lemon tree's roots have difficulty breathing and their growth is hindered. These causes very easily lead to root rot, after which the leaves begin to turn yellow, and in severe cases the lemon tree will die.

Solution: First dig open part of the root soil to check whether the roots really are rotten and how severe the rot is. If the rot is small in extent, cut away the rotten roots of the tree and apply a chemical agent to prevent bacteria from entering. After the wounds have healed, it can be replanted. After replanting, be sure not to water too much or use too high a concentration of fertilizer.

4. Pests and diseases

Many kinds of pests and diseases can cause lemon tree leaves to turn yellow, such as scab and canker, which produce small yellow spots on the leaves when they occur. The same is true of pest damage, which causes the leaves to turn yellow.

Solution: Strengthen management at ordinary times and spray the corresponding chemical agents for prevention and control.

This is also brought to you by QinNongNet: what to do when lemon tree leaves turn yellow. That is all for the content on yellowing lemon tree leaves. We believe that after understanding the reasons why lemon tree leaves turn yellow, you can solve the problem in time. For more agricultural knowledge, please stay tuned to QinNongNet.