Serious reasons for summer black grape dropping

Xiahei grape is an excellent variety, which has the characteristics of disease resistance, high yield, early maturity and good taste, but the grain loss of Xiahei grape often occurs when it is planted, which brings huge loss to the yield. So what is the serious grain loss of summer black grapes? Let's take a look.

1. Inherit one's own gene

Xiahei grape itself likes to lose flowers and fruit, which is a very common problem, other grape varieties have the same phenomenon of grain loss, but Xiahei grapes fall more than other varieties of grapes. The grain of Xiahei fruit is larger, and the fruit is soft after ripening, so it is easy to fall off from the stalk.

2. Improper management

At the time of improper planting management, it will also lead to serious grain loss of summer black grapes, such as large amount of fruit retained, tight gap between fruit grains, insufficient space for fruit growth, and the phenomenon that fruit grains will crowd each other and be squeezed out when the fruit grows and expands gradually. The best solution is reasonable thinning of flowers and fruits, good control of the number and gap of fruit grains, and reasonable proportion of fruit leaves. In addition, serious grain loss occurs when boron and zinc deficiency or improper management of water and fertilizer occurs at flowering stage, such as partial application of nitrogen fertilizer at flowering and fruiting stage.

3. Climatic reasons

Summer black grape in the middle and late flowering period, the weather deteriorated, too much Rain Water, resulting in stagnant water in the field, high air humidity, fruit will absorb too much water, fruit stalk can not bear the phenomenon of grain loss. At the same time, the decrease of light will also affect the photosynthesis of leaves, resulting in the lack of synthetic nutrients, the growth and development of fruits without sufficient nutrients, and may also cause grain loss.

4. Disease

In summer black grapes infected with fungal diseases, such as anthracnose and rot, there will also be grain loss, many fruit farmers think that the prevention and treatment of the disease should be sprayed after setting the fruit, or even when it is painted, it is too late. Because fungal disease prevention should be in its incubation period to start spraying prevention, can be sprayed before flowering to prevent anthracnose and white rot, so the control effect is better. In addition, the withered branches and leaves on the ground should be cleaned up in time to avoid the breeding of fungi.

The above is the introduction of the reasons for the serious grain drop of Xiahei grape. I hope it can help you. If you want to know more about it, please follow us.