Causes and control measures of deformity of kiwifruit

Kiwifruit is a popular fruit, but in recent years, there are a large number of abnormal fruits in kiwifruit production, which seriously affect the commodity rate and reduce the economic income of farmers. So what is the reason for kiwifruit deformity? How to prevent and cure it? Come and have a look with the editor.

1. Causes of deformity of kiwifruit

The abnormal fruit of kiwifruit is mainly caused by incomplete pollination and fertilization, poor flower bud differentiation and declining flower quality, resulting in deformed fruit. There are also many direct causes of poor pollination and fertilization of kiwifruit, such as poor orchard construction, relatively hidden, poor ventilation and light transmission, poor flower bud differentiation of fruit trees. In the process of pruning, because of improper pruning, the relationship between vegetative growth and reproductive growth can not be handled properly, and it will also affect the growth and development of fruit in the later stage, resulting in deformed fruit.

II. Prevention and control measures

1. Pay attention to thinning flowers and buds

Because kiwifruit only needs abundant pollination, there is generally no physiological fruit drop, so the flower buds can be removed. In the bud stage of the plant, the lateral buds of double buds and 3 buds, the buds at the base of fruiting branches, and the buds of diseases and insect pests can be sparse, which can well control the amount of hanging fruit. Fruit thinning can be carried out within 40 days after flower shedding, and the earlier the better, mainly remove small fruits, deformed fruits, disease and insect fruits and injured fruits to ensure normal fruit growth in the later stage.

2. Nutrients should be selected during flower bud differentiation.

There are two periods of flower bud differentiation in kiwifruit, one is flower bud differentiation from June to August every year, when physiological differentiation, and the other is after germination and before flowering in the second year. If we want to have large flowers, full flowers and reduce deformed flowers, we need to pay attention to the supply of nutrients such as boron, zinc and phosphorus. Phosphorus deficiency will lead to less flowering; zinc deficiency will lead to weak flowers and uneven flowers; boron deficiency will lead to deformed flowers.

3. Hormone expansion should be steady.

Many farmers often use hormones to forcibly enlarge the cells to promote the expansion of the fruit, and in order to make the fruit bigger, the fruit is usually soaked early, when the cells are not split, it will cause abnormal fruit, so we should pay attention to the concentration and will when soaking the fruit. at the same time, pay attention to make up for nutrients.

4. Pay attention to make up nutrients during the period of young fruit development.

During the period of rapid cell cleavage after flowering, there is a large amount of phosphorus in fruit protection energy. if the root system is underdeveloped, the soil is sour or alkaline, and the absorption of phosphorus is poor, then the development of young fruit will be hindered, the number of fruit drop will increase, and the fruit is easy to be deformed.

The above is the introduction of the causes and control measures of kiwifruit deformities. I hope I can help you. If you want to know more about it, please follow us.