Symptoms of boron deficiency in tomatoes

When the tomato is boron deficient, the new leaves stop growing and the plant shrinks. The leaflet chlorosis is yellow or orange-red, the growth point is dark or black, the young leaf tip is yellowed, the leaf is deformed, the old leaf color becomes dark green, the petiole becomes thick and fragile; in severe cases, the leaf and growth point die, the stem bends, and there are brown cork-like cracks on the inside of the stem. There are cork cracks on the surface of the fruit.

I. the causes of boron deficiency in tomatoes

The main results are as follows: 1. After soil acidification and boron leaching, excessive lime is easy to cause boron deficiency.

2. It is easy to occur when the soil is dry and the application of organic fertilizer is less.

3. It is also easy to occur when excessive potassium fertilizer is applied.

4. The root absorption is limited or the plant needs a large amount of boron, and the supply of boron in the soil is insufficient.

II. Treatment of boron deficiency in tomatoes

1. Transform the soil and increase the application of rotten organic fertilizer. During the transformation of acid soil, attention should be paid to the amount of lime to prevent boron deficiency caused by excessive application of lime.

2. After the symptoms of boron deficiency appeared, boron fertilizer was sprayed on the leaves, which was generally diluted 8-1200 times and sprayed once every 3-4 days until the symptoms of boron deficiency disappeared.