What if the pumpkin doesn't grow up and fall?

Pumpkin is a common melon and fruit vegetable, it can be eaten in many ways, it can boil porridge, make soup, and make pumpkin pie, and mature tender melon is also a delicious dish. But when planting pumpkins, there will be small fruit problems, when the pumpkin grows to the size of a fist, it wilts, falls, and dies on its own. What's going on? Let's get to know it.

1. Poor pollination

The pollination of pumpkin will be affected in the high temperature environment. When the temperature exceeds 32 degrees, the flower organ will develop abnormally and the pollen function will decline as the temperature rises. When the temperature reaches 40 degrees, the pollen germination and pollen tube elongation will decrease significantly, and the pollen life span will be short. If the female flower does not pollinate, the pumpkin will gradually stop and even the bitter taste will fall. In addition, the cloudy and rainy weather of the floral organ will also affect the normal pollination, mainly because the development of ovary and floral organ is affected because of the heavy rainy day, and Rain Water is very easy to scour the pollen on the female flower stigma, which makes the pollen lose its germination ability. it is difficult to complete pollination, resulting in fruit drop.

Prevention and control methods: aiming at the high temperature weather, the varieties with strong parthenocarpy ability, high temperature resistance and high fruit setting rate should be built at high temperature, or water spray should be sprayed to cool down.

2. Improper management of fertilizer and water.

A large amount of nitrogen fertilizer is applied before pumpkin fruit setting, and Rain Water is larger before fruit setting, so it is very easy for pumpkin vines to grow when there is sufficient fertilizer and water. when pumpkin fruit is set, the branches and leaves consume a lot of nutrients, resulting in insufficient nutrition of young fruits, unable to grow, and finally fall off.

Prevention and control methods: to strengthen fertilizer and water management, especially before flowering and fruit setting, apply little or no fertilizer and water, especially to control the application of nitrogen fertilizer, when the plant is overgrown, the root can be irrigated with dwarf solution to inhibit the vegetative growth of the plant. In the middle stage of growth, heavy fertilization should be applied before closing the row, and the amount of fertilizer should be determined according to plant development and soil fertility, such as the growing point of melon vine is strong and warped, and it is not suitable to apply fertilizer when the leaf color is dark green, and if the leaf color is light green or the leaf is yellow, fertilizer should be applied in time.

3. Diseases and insect pests

Pumpkin flowering and fruit setting period is threatened by disease will also lead to pumpkin does not grow up, shedding phenomenon, such as gray mold will cause pumpkin flowers and fruits to fall.

Prevention and control methods: we must pay attention to the prevention and control of diseases and insect pests, and aphids can be controlled with imidacloprid; powdery mildew can be controlled with difenoconazole, tebuconazole, pyrazolyl carbendazim, etc. Botrytis cinerea can be controlled with Pythium, pyrimidine and iso-carbamide, and withered plants should be pulled out in time.

The above is the introduction of what to do if the pumpkin does not grow up. I hope it can help you. If you want to know more about it, please follow us.