What causes wrinkled fruit in passion fruit? How to prevent and control it

Passion fruit contains over a hundred kinds of aromatic substances and can taste of the aromas of other fruits, which is why it has the title of "king of fruit juice." However, during the cultivation of passion fruit, the phenomenon of wrinkled fruit is often encountered. So what causes wrinkled fruit in passion fruit? How should it be prevented? Let's find out together.

Causes of wrinkled fruit in passion fruit

1. Disease causes

When passion fruit is affected by diseases such as viral disease, phytophthora blight, and anthracnose, it leads to nutritional imbalance in the plant and the appearance of wrinkled fruit.

2. Pest causes

When passion fruit is harmed by fruit flies, thrips, stink bugs, snails, and other pests, it causes physiological and metabolic disorders and nutritional imbalance, resulting in wrinkled fruit.

3. Nutritional imbalance

Excessive nitrogen and phosphorus, along with insufficient supply of trace elements such as boron and magnesium, leads to disordered physiological metabolism, nutritional imbalance, incomplete floral organ development, or blocked transport, and nutritional supply imbalance after fruit fertilization, resulting in wrinkled fruit.

4. Climatic factors

After the fruit is fertilized, sudden changes between cold and hot temperatures can also cause physiological and metabolic imbalance, leading to wrinkled fruit.

Preventive measures

1. Apply more organic fertilizer

Passion fruit prefers an environment with high nitrogen, high potassium, and high magnesium. According to its growth characteristics, elemental organic fertilizer can be selected as the base fertilizer, and multi-element compound fertilizer can be selected as the base fertilizer and topdressing. During the seedling stage, nitrogen fertilizer is mainly used; after the vines reach the trellis, potassium and magnesium elements are mainly used. Do not apply phosphorus fertilizer in a one-sided way, so as to avoid poor fruit growth.

2. Foliar fertilizer

After the seedlings reach the trellis, spray foliar fertilizer once every 20-30 days in combination with disease control. The foliar fertilizer should be mainly boron fertilizer; it is recommended to spray a 0.3% borax solution, using about 1 jin of borax per mu each time, and spray after mixing with water in proportion.

3. Do a good job of pest and disease control

Attention must be paid to pest and disease control, especially the control of viral disease and fruit flies. For viral disease control, virus-free seedlings can be selected at planting time, and during the seedling stage, pesticide should be sprayed once a week to control vector pests such as aphids and thrips. For fruit flies, rely on physical control, such as hanging yellow sticky boards, sweet-and-sour bait trapping, and sex pheromone lure trapping.

The above is an introduction to the causes of wrinkled fruit in passion fruit and the prevention and control methods. We hope it can help you. To learn more related knowledge, please stay tuned to us.