The reasons for the low fruit setting rate of passion fruit and its solutions

Passion fruit has unique fragrance and delicious taste, which is deeply loved by consumers. The market benefit is good, so more and more farmers plant it. However, many fruit growers find that the fruit setting rate of their passion fruit is extremely low in the planting process, so the yield is relatively low, which seriously affects the income. So what is the reason for the low fruit setting rate of passion fruit? How do we solve this? Let's learn about it together with Xiaobian.

1. Reasons for low fruit setting rate

1. Adverse climate effects

Passion fruit flowering suitable temperature for 20-25 degrees, when the temperature is higher than 30 degrees, it will lead to incomplete flower development, pistil stigma viscosity is poor, pollen tube atrophy, male pollen germination and pollen tube elongation will be affected, not conducive to pollination and fertilization. In addition, when it rains at flowering stage, pollen is affected by rain and dampened, basically losing germination ability, and insect activity will also be inhibited, resulting in low fruit setting rate.

2. Uneven nutrition at flowering stage

Passion fruit will consume a lot of nutrients when it blooms and bears. If this is due to insufficient nutrient supply or unbalanced nutrient supply, it will cause low hanging fruit set rate. For example, excessive application of nitrogen fertilizer will cause vines to grow excessively, while boron deficiency will affect the formation of pollen tubes, resulting in flowers without fruit, magnesium, zinc and other elements will affect flower quality, resulting in reduced seed setting rate.

3. Pest invasion

When the pest such as thrips breaks out at flowering stage, it is easy to cause damage to flower organs and finally affect fruit setting rate. Virus disease is easy to cause poor flower bud differentiation and reduce fruit setting rate.

II. Solutions

When the natural pollination rate of passion fruit is low, we can assist the pollination and fertilization of passion fruit by over-configuration of pollination tree, bee release, bee lure and artificial pollination. In high temperature and dry weather, the orchard can be sprayed with water before 10:00 in the morning to effectively improve the cultivation environment, promote the normal growth and development of flowers, and effectively improve the fruit setting rate. At the same time, attention should be paid to nutrient supply. In addition to conventional fertilization, cytokinin and sea spirit biological stimulants can be sprayed on the leaves of flower bud differentiation stage and flower bud stage, which can effectively improve flower quality and fruit setting rate. In the early stage, we should do a good job of prevention, and we should use drugs carefully during flowering to avoid phytotoxicity affecting the fruit setting rate.

The above is the introduction of the reasons and solutions for the low fruit setting rate of passion fruit. I hope it can help you. If you want to know more about it, please pay attention to us.