Passion fruit leaves curl

In recent years, the passion fruit market is in short supply, and there are more and more fruit growers. In the process of planting, you will find that the passion fruit leaves are curling. The following editor will introduce you to the passion fruit leaf curls.

1. Prevention and treatment of passion fruit leaf curling

The curling of passion fruit leaves is mainly caused by aphids and viruses. You can use foliar spray fungicide and new high-fat film 500 times liquid mixture, evenly sprayed on the leaves, buds and fruits, it is appropriate to have water droplets dripping down, spray again every other week. If it doesn't get better, spray it every 7 days. At the same time, control the supply of nitrogen fertilizer, increase the application of organic fertilizer and phosphorus and potassium fertilizer, and spray Zhuangguotiling on the leaf.

Second, the growth environment of passion fruit

1. Temperature

The most suitable growth temperature of passion fruit is 20 ℃ ~ 30 ℃. Generally, it grows well at the temperature of no less than 0 ℃, and the plant will be seriously damaged or even die when it reaches-2 ℃. The area with annual average temperature above 18 ℃ is the most suitable for planting and easy to get high yield. Therefore, it is widely distributed in the warm and humid areas of southern China, especially in Hainan.

two。 Moisture content

The passion fruit grows best when the annual rainfall is between 1500 and 2000mm and is evenly distributed, while the commercial development planting area should not be less than 1000 mm. Passion fruit is more tolerant to drought, but it still needs irrigation in case of drought. If the soil is too dry, it will affect the development of vines and fruits, and in serious cases, the branches will wither, the fruits will not develop and the fruit will drop. Pay attention to drainage during the rainy season.

3. Light

As a tropical fruit, passion fruit likes plenty of sunlight to promote vine growth and nutrient accumulation. The condition of long-day sunshine is beneficial to the flowering of passion fruit. In the area with annual sunshine hours of 2300-2800 hours, passion fruit has good vegetative growth, more nutrient accumulation, fast branch growth, early fruiting and high yield. The most suitable growth temperature is 20 ℃ ~ 30 ℃. Generally, the plant grows well at the temperature of no less than 0 ℃. When it reaches-2 ℃, the plant will be seriously damaged or even die.

4. Soil

Passion fruit has strong adaptability and low requirement for soil. However, the soil layer produced in a large area is at least 0.5 meters, and the soil is fertile, loose and well drained, and the soil pH value is 5.5-6.5.

Passion fruit leaf curl is a common pest, encounter this situation we do not panic, just seriously do a good job of prevention and control work.