What pesticide is effective for controlling leaf curl in fruit trees

During the planting process, fruit trees often develop leaf curl. If leaf curl persists for a long time, it may affect the normal growth of the fruit trees, thereby affecting the quality of the fruit. So what pesticide should be used for leaf curl in fruit trees? In fact, there are many factors that cause leaf curl in fruit trees, and it should be decided according to the specific situation.

1. Water deficiency

If fruit trees lack water, leaf curl may occur, especially in summer, when the weather is hot, plants are very likely to develop leaf curl.

Solution: If the plant lacks water only because of hot weather, simply watering the plant more or providing appropriate shade can relieve the symptoms.

2. Insect pests

The pest most likely to cause fruit tree leaf curl is aphids. Aphids mostly gather on the underside of leaves to pierce and suck sap, causing the leaves to curl and wrinkle.

Solution: For aphids, spray 10% imidacloprid 2000-fold dilution, or pyrethroid pesticides for control.

3. Potassium deficiency

Leaf edges scorch and dry, spreading gradually from the lower part of new shoots to the upper part. From midsummer to late summer, scorching occurs on the leaves of old trees. Sometimes the leaves are blue-green, and then the leaf edges curl parallel to the main veins, lose green color, and subsequently appear scorched.

Solution: Spray 0.2%-0.3% monopotassium phosphate during the growing season, or apply potassium sulfate to the soil.

4. Calcium deficiency

The tips of young leaves at the top curl into a hook shape, and after a few days turn brownish-yellow and scorched.

Solution: Calcium preparations such as ga calcium treasure, Meilin high-efficiency calcium, and calcium lactate have good effects.

5. Molybdenum deficiency

Leaves lose green color between the veins, or even turn yellow, and are prone to yellow or orange spots of varying sizes. Leaves become thin, long, and deformed, and leaf edges curl upward into a cup shape, eventually with the mesophyll falling off and becoming incomplete.

Solution: Spray 1.2% ammonium molybdate solution on the leaves.

There are many factors that cause leaf curl in fruit trees, and the symptoms of leaf curl caused by different situations are also different. Only by treating the root cause can leaf curl in fruit trees be fundamentally controlled.