Pumpkin only blossoms but does not bear fruit. Artificial pollination can't solve it. That's the weather.

The phenomenon of flowering and non-fruiting in agricultural production is relatively common, such as melons basically need to use artificial pollination. It should be said that this is already common sense, and no one should make mistakes in this respect. In addition, the accurate saying for flowering without fruit is that only male flowers are blooming and there is a lack of female flowers, even if there are a few female flowers, they still fail to achieve fertilization and fruiting! This is the most common phenomenon in production.

In fact, for this problem, let's first analyze the internal causes.

First, there is a lack of female flowers. Crops such as pumpkin, watermelon and wax gourd are not particularly suitable for their growing season because of the hot summer weather, so even if they come out, they are male flowers and fewer female flowers. It is not difficult to solve this problem, just promote the development of female flowers! In production, auxins or auxin analogues are commonly used to treat flower buds, which can promote flower buds to differentiate into female flowers. So as to improve the probability of pumpkin fruit setting!

However, the lack of female flowers is not a single weather problem, the lack of plant nutrition supply is also difficult to achieve the goal of more female flowers. Therefore, strengthening the supply of nutrition at flowering stage is also a major point of management.

Secondly, there are female flowers, but also artificial pollination, still failed to set fruit! This has a lot to do with the current weather, which is basically in the hottest weather in summer, while the vitality of pumpkin pollen is the strongest at 10 o'clock in the morning, but by this time the temperature has generally reached 30 degrees Celsius. Even if the flower is fertilized at such a temperature, the probability of successful fertilization is very low.

Here is a tip. In agricultural production, you will often see farmers dipping flowers in tomato fields in summer. This is because seedless tomatoes take advantage of auxin to stimulate ovary development to achieve ovary expansion, and pumpkins are actually OK, but because pumpkins are larger, the dose of auxin also needs to be considered.

Here is science to promote agriculture, welcome to add attention, with you to grow knowledge.