What to do about nutrient deficiencies in cucumbers? The latest prevention and control methods are here

The common nutrient deficiencies in cucumber cultivation are: potassium deficiency, magnesium deficiency and boron deficiency, 3 types in total. Their symptoms and prevention and control methods are as follows:

Potassium deficiency

Slight yellowing appears at the leaf margins, then the leaf margins die, and as the leaves grow, the leaves curl outward.

Prevention and control method: apply potassium fertilizer in a timely manner, and while applying potassium fertilizer, it should be done together with iron supplementation.

Magnesium deficiency

In the lower leaves of cucumber, the mesophyll between the veins gradually loses green and turns yellow. With further development, except for a little green at the leaf margins, all of it turns yellow. In severe cases, the upper leaves also turn yellow from the inner side.

Prevention and control method: increase the application of organic fertilizer, use formula fertilization, and avoid excessive application of nitrogen fertilizer causing the soil to become acidic and affecting the absorption of calcium and magnesium. When magnesium is deficient, foliar spraying of 1%-2% magnesium sulfate, etc. can be used. Note that while supplementing magnesium, it should be combined with potassium and zinc supplementation.

Boron deficiency

When boron is deficient, the growing point dies, the floral organs develop incompletely, the leaves, stems and fruits stop growing, the leaf margins turn yellow, the yellowed part is relatively wide, and there are cracks on the fruit skin.

Prevention and control measures: increase the application of barnyard manure, do not apply too much lime, and water reasonably. Supplement boron fertilizer in a timely manner. Chelated boron series can be used to avoid applying only borax-type fertilizers and causing harm to the soil.