Causes of topping of cucumber and melon and its control methods

Many cucumber farmers have encountered the phenomenon of melon topping, especially in greenhouse cultivation, this situation is more common, in fact, it is a physiological disease, which often occurs in the period of low temperature. It seriously affects the yield and appearance of cucumbers, so why is there the phenomenon of melon topping? How to prevent and cure it? Let's take a look at it.

Reasons for melon topping

1. The temperature is relatively low

In the early stage of growth, the temperature in the greenhouse is low, so the normal growth of the plant is inhibited, or the vegetative growth is too prosperous, which leads to serious overgrowth and flower topping.

2. Root system damage

The temperature in the greenhouse is unstable, especially the daytime temperature is too high, but the soil water content is sometimes insufficient, and because of unreasonable fertilization or crop rotation and other reasons, the content of organic matter in the soil decreases, so it will affect the root system of cucumber. Sometimes higher humidity or more irrigation leads to soil moisture, but the surface temperature is too low, it is easy to retting root phenomenon.

3. Lack of nutrients

The permeability of soil is poor, which affects the respiration of roots and can not provide sufficient nutrients for aboveground plants.

4. Drug damage

Daily use of pesticides is not standard, the use of a large number of insecticides or fungicides, and the use is too frequent, will lead to the normal growth of plants, resulting in the phenomenon of melon topping.

Prevention and cure method

First of all, it is necessary to adjust the temperature in the greenhouse, which is neither too high nor too low, and needs to be controlled within a reasonable range. At night, the temperature is relatively low, but it should be maintained at more than 10 degrees. When the daytime light is insufficient and less than 20 degrees, it is necessary to close the vents and cover the grass curtain to keep warm. Reasonable fertilizer and water management, fertilization using the principle of a small amount of frequent application, fertilizer had better not directly contact the root, so as not to hurt the root, appropriate watering, try to choose warm water, to avoid flood irrigation and lead to the deterioration of soil permeability, after watering, the soil can be properly loosened to maintain soil permeability. If there are cloudy or low temperature days in a row, remedial measures should be taken. If melon topping has already occurred, the ripe fruit should be removed in time and go out to the surrounding female flowers. For root maintenance, especially in winter, do not leave too much flowers, otherwise it will only make the root system weaker.

The above is the introduction of cucumber and melon topping reasons and control methods, hope to help you, want to know more related knowledge, please pay attention to us.