Abstract: Walnut trees are trees that produce delicious walnut fruits, but during the growth process, a phenomenon will appear-walnut fruit drop. This is a headache for walnut gardeners. This article will explore the reasons for walnut fruit falling from multiple angles, so that everyone can have a deeper understanding of...
Walnut trees are trees that produce delicious walnut fruits, but during the growth process, a phenomenon will appear-walnut fruit drop. This is a headache for walnut gardeners. This article will explore the reasons for walnut fruit falling from multiple angles to allow everyone to have a deeper understanding of this issue.
Climatic factors: Too high or too low temperature will affect the fruit production of walnuts. Especially during the flowering period, if inappropriate climatic conditions are encountered, flowers will easily fall and fruits will fail.
Pest, insect pests and diseases are another important factor affecting walnut fruit growth. If pests or bacterial infections are found on walnut trees, timely measures need to be taken to prevent and control them.
Nutritional deficiency Walnut trees need to absorb various nutrients during their growth. If a certain nutrient is lacking in the soil, the walnut fruits will be unhealthy.
The flowering period is too short. The flowering period of walnut trees is very short, only about 10 days. If you encounter severe weather or other disturbances during this time, it will affect the production of fruits.
The life span of walnut trees is more than 100 years, but as the tree ages, its ability to produce fruits will gradually weaken or even be completely lost.
Naturally falling Fruit Not all fruits on walnut trees can mature, and some fruits fall naturally. This is because walnut trees will self-regulate during their growth and will automatically select fruits with insufficient maturity to fall off.
Fruit thinning is not timely. Walnut owners need to thin the fruit after the fruit is ripe to leave healthy fruit. However, if the fruit thinning is not timely or incomplete, it will also lead to fruit loss in the later period.
Poor drainage Poor drainage can lead to a large amount of water in the soil, affecting the normal development of root systems, and then affecting the formation of walnut fruits.
The soil pH is not suitable for the growth of walnut trees. The soil pH is between PH6.5 and 7.5. If the pH is too high or too low, it will affect fruit formation.
Damage to the trunk will affect the normal growth of the tree, which in turn affects the production of walnut fruits. Walnut gardeners need to regularly check the health status of the trees and carry out timely maintenance.
Poor pollen transmission The fruit of walnut trees is made by fertilization of pollen adhered to the stigma. If pollen spreads poorly or is disturbed, it will lead to unsatisfactory fruit production.
Water shortage is another important factor affecting walnut fruit formation. Especially during flowering, it is necessary to ensure sufficient water supply, otherwise the fruits will be immature or even unyielding.
Frost is another important factor that causes walnut fruit drop. If large-scale frost weather is encountered, flowers and fruits will fall off.
Strong winds and rain Strong winds and rain can have a certain impact on walnut trees, especially during flowering and fruit growth. These weather conditions can have an impact on pollen transmission, fruit fertilization and maturity.
Other factors and some other factors can also affect the fruit drop of walnuts, such as soil quality, light conditions, etc.
Looking at the reasons for walnut fruit drop from the above multiple perspectives, we can see that fruit drop is a relatively complex problem, and many factors will affect the fruit formation of walnuts. Walnut gardeners need to adopt a variety of methods to prevent and control them to ensure healthy growth of walnuts and a bumper harvest of fruit.