Why is there a low fruit set rate when there are many cherry blossoms? (How can I get more fruit set when there are many blossoms)

Why do cherry flowers bloom but no fruit?

It is a common situation that cherries have many flowers but few fruits. This situation is called "flowers but no fruits", which means that no fruits appear after flowering. So what is the reason for this situation?

1. Water and fertilizer reasons

Cherry requires a relatively large amount of fertilizer from the flowering period to the fruit setting period. At this time, it is necessary to apply phosphorus and potassium fertilizers in time to promote the transport of nutrients to the fruit and ensure the flowering rate and fruit setting rate.

In addition to phosphorus and potassium fertilizers, the lack of calcium fertilizers during this period may cause cherry flowers and fruits to fall, and the fruit cracking in the later period is also caused by calcium deficiency, so at this time, it is necessary to ensure the application of water and fertilizer with full nutrition.

It is recommended to use a multi-pronged approach of macroelements + medium and trace elements + microbial agents to ensure the fruit setting rate of cherries.

2. Reasons for pollination

If the cherry trees have a large number of flowers but a low fruit setting rate, another possible reason is that the pollination is not done properly. Many cherries are varieties with a relatively low fruit setting rate, so artificial pollination is required.

Artificial pollination can be done in several forms, such as pollinators or bee pollination . If you want to pollinate, you must first make a pollinator, tie a gauze ball on the top of the wood root, and use it to rub cherry flowers to obtain pollen. When you rub other flowers, you can spread the pollen.

3. Pests and diseases

If water, fertilizer and pollination are ruled out as the causes, then we need to consider whether pests and diseases have occurred. Of course, this situation will be accompanied by other symptoms.

For example, if there are symptoms such as yellow leaves, rotten fruits, and falling flowers, it is necessary to spray pesticides in time and maintain root development, otherwise it will be difficult to increase the fruit set rate of cherries.

In addition, the cherry fruit set rate is also related to factors such as climate temperature and flower bud quality. Sometimes it may be caused by a combination of multiple factors, which need to be checked and resolved one by one .

How to manage cherries to get more fruit

The first method is to use brassinolide to promote flowering and increase fruiting rate.

Brassinolide is a high-quality plant growth regulator that plays a very important role in promoting cherry flowering and fruiting, improving cherry quality, increasing commercial rate and increasing yield.

During the cherry blossom period, use 0.01 mg/L of brassinolide, plus a mixed solution of 0.2% potassium dihydrogen phosphate and 0.1% boron fertilizer for foliage spraying once every 7 days, for 2 to 3 times in a row, the effect is very obvious.

The second method is to use yield-increasing amines to promote cherry flowering and increase the fruit-bearing rate.

DCPTA is the first plant growth regulator discovered so far that can directly act on the plant cell nucleus, affect plant genes, repair defective genes and improve crop quality.

It can promote cherry flowering, improve fruit bearing rate, increase cherry yield, and significantly improve photosynthesis.

At the same time, it can increase the leaves' absorption and utilization of carbon dioxide, improve the storage accumulation of substances such as proteins and lipids, promote cherry cell division and growth, and increase the activity of certain synthetic enzymes.

Spray 20-30 mg/L of yield-increasing amine during the initial flowering period, fruiting period, and fruit expansion period of cherries, plus 0.2% potassium dihydrogen phosphate and 0.1% boron fertilizer. This can promote flowering and fruiting, increase the sugar content of cherries, improve quality, increase yield, and enhance stress resistance.