What to do with boron deficiency in cucumber?

Cucumber is one of the vegetables that need a large amount of boron, and it is one of the keys to the growth and development, flowering and fruiting and seed development of cucumber. With the gradual increase of the application rate of chemical fertilizer, the boron element in soil decreases, which hinders the absorption of boron by cucumber. It has a strict effect on the yield and quality of cucumber. So what should we do about boron deficiency in cucumbers? Let's take a look.

1. Symptoms of boron deficiency

Boron deficiency will lead to underdeveloped root system, weak water absorption and fertilizer absorption, slow or poor plant growth, small flowers and a large number of early flower drop. The internodes near the growth node will be shortened, the new leaves will curl outward, the leaf margin will turn brown, the leaf veins will also show signs of atrophy, some leaves will appear large flower spots, there will be no stains on the fruit, the interior will be hollow, and there will be corking phenomenon.

2. Causes of boron deficiency

It is mainly due to the soil, if it is planted on acidic soil, a large amount of lime is applied at one time when adjusting pH, boron deficiency is very easy to occur. Too dry soil will also affect the absorption of boron by plant roots, which is prone to boron deficiency; the content of organic matter in soil is low, and the content of boron is low, so it causes boron deficiency; improper fertilization, such as partial application of nitrogen fertilizer, will hinder the root system to absorb boron, it is not suitable to apply too much potassium fertilizer in the fruit stage, it will also hinder the root system to absorb boron, which is easy to cause boron deficiency.

3. Prevention and control methods

Soil boron deficiency requires timely topdressing of boron fertilizer, and when applying base fertilizer, about 1 kg of borax is applied per mu, which can also meet the boron demand of cucumber during the whole growth period. Watering in time when the soil is dry, but pay attention to the amount, the soil water content is high, boron is easy to lose, so drainage measures should be taken in the rainy season to avoid a large amount of boron loss. Fertilization should be carried out according to the fertilizer demand of each growth stage of the plant, and some kind of fertilizer should not be applied. If boron is deficient in the later stage, borax can be diluted with water and sprayed with foliar fertilizer, which can supplement boron quickly.

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