Causes of low fruit setting rate of passion fruit and its solution

Passion fruit has a unique fragrance and delicious taste, which is deeply loved by consumers, and the market benefit is good, so more and more farmers grow it, but many fruit growers find that the fruit setting rate of their passion fruit is very low in the process of planting. This yield is also relatively low, seriously affecting the income. So what is the reason for the low fruit setting rate of passion fruit? How to solve it? Let's get to know it with the editor.

First, the reason for the low fruit setting rate

1. Adverse climatic effects

The suitable temperature for passion fruit florescence is 20-25 degrees. When the temperature is higher than 30 degrees, it will lead to floral organ hypoplasia, poor adhesion of pistil stigma, atrophy of pollen tube, pollen germination and pollen tube elongation of male flowers, which is not conducive to pollination and fertilization. In addition, when it rains at the flowering stage, the pollen is affected by Rain Water and basically loses its germinating power. at the same time, insect activity is also inhibited, resulting in a lower fruit setting rate.

2. Unbalanced nutrition during flowering.

Passion fruit in blossom and fruit, will consume a lot of nutrients, if this is insufficient or uneven nutrient supply, then it will cause low hanging fruit setting rate. For example, excessive application of nitrogen fertilizer will cause vines to grow excessively, and boron deficiency will affect the formation of pollen tubes, resulting in flowers and sterility, lack of magnesium, zinc and other elements, will affect flower quality, resulting in a decline in seed setting rate.

3. Invasion of diseases and insect pests

When thrips and other insect pests break out in the flowering stage, it is very easy to cause flower organ damage, and finally affect the fruit setting rate. Virus disease is easy to cause poor flower bud differentiation and reduce the fruit setting rate.

II. Solution measures

When the natural pollination rate of passion fruit is low, the pollination and fertilization of passion fruit can be assisted by over-configuration of pollination trees, bee release, bee induction and artificial pollination. In the high temperature and drought weather, the orchard can be cooled by spraying water before 10:00, which can effectively improve the cultivation environment, promote the normal growth and development of floral organs, and effectively increase the fruit setting rate. At the same time, attention should be paid to the supply of nutrients, in addition to conventional fertilization, cytokinins and sea elves biological stimulants can be sprayed on the leaves of flower bud differentiation and flower bud stage, which can effectively improve flower quality and fruit setting rate. In the early stage, it is necessary to do a good job in the prevention work, in the flowering period should be cautious in the use of drugs, to avoid drug damage to affect the fruit setting rate.

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