Latest analysis of the causes of kiwifruit fruit drop

During the growth and development of kiwifruit, flower and fruit drop often occurs. This situation can seriously affect kiwifruit yield and is also a heartbreaking matter for fruit growers. So why does kiwifruit experience fruit and flower drop? Below, the editor will talk with everyone about the causes of kiwifruit fruit drop.

1. Abnormal climate

Fruit drop caused by abnormal climate generally occurs after flowering, and flower drop also occurs along with fruit drop. This is because kiwifruit is most sensitive to weather and climate during pollination. 15-28 degrees is the most suitable temperature for kiwifruit pollination and fertilization. Below 15 degrees or above 28 degrees will affect its pollination. The suitable humidity is above 55%, but if the pollen encounters water, it will rupture and be unable to pollinate.

2. Poor pollen quality

Kiwifruit pollen can only be used when its germination rate is higher than 30%. However, the pollen used by many fruit grower friends is different, and the quality also varies greatly. Most are lower than 30%. Experiments show that when the pollen germination rate is lower than 30%, it will lead to poor pollination between kiwifruit and cause fruit drop.

3. Excessive nutrients

Many fruit growers spray pesticides and water during the kiwifruit flowering period, but if fertilizer and water are excessive, it will cause kiwifruit to have excessive nutrients and become too heavy. The branches cannot bear the weight, causing fruit drop. However, during normal flowering and fruiting, it is still necessary to ensure that kiwifruit has sufficient fertilizer and water supply.

4. Fruit drop from disease

During the growth and development period of kiwifruit, there are also many diseases, such as sclerotinia rot and gray mold. These diseases will harm the fruit and fruit tips to varying degrees, causing the fruit to rot and the branches to wither and yellow, leading to fruit drop.

5. Fruit drop from pesticide damage

The flowering and fruit-setting period of kiwifruit is the period when it is most sensitive to the external environment. Improper use of pesticides will directly harm the flowers and fruits. Many people, when preventing and controlling some diseases, such as flower rot, and some leaf diseases, fail to control the pesticide dosage well. Also, for convenience, they mix fungicides, insecticides and all other pesticides together, causing fruit drop.

6. Improper management

Many times, under the same environment, some orchards have very serious fruit drop, simply because daily management has not been done properly. For example, excessive fertilization and unreasonable proportions. Too much plowing damages the roots, and branches and leaves are too dense, resulting in poor ventilation and light penetration, and so on. These problems are all causes of fruit drop.

Kiwifruit is most sensitive when fruiting. Attention should be paid to its care, and spraying should be avoided as much as possible during the fruiting period. Manage the ventilation, light penetration, and drainage in the orchard well. The above are the causes of kiwifruit fruit drop compiled by the editor. If you want to know how to solve fruit drop, please continue to follow Qinnong Network.