How does the latest high-temperature weather affect passion fruit?
Passion fruit is a very common fruit in our daily lives, and its planting area in our country is also very large. The nutritional value of passion fruit is also very high, so more and more people are growing it now. When growing passion fruit, we need to pay special attention to weather changes. High-temperature weather in particular will have a great impact on the growth of passion fruit. So what exactly does high-temperature weather do to passion fruit? Let's take a look below!
1. The impact of high-temperature weather
After passion fruit buds mature, under normal circumstances they will bloom at around 11 a.m. When they bloom, if the weather is hot, it will affect pollination, fruit setting, and so on. On the day of flowering, the higher the temperature, the lower the pollination and fruit-setting rate. The bud stage of passion fruit generally lasts about three weeks, and the suitable temperature for growth during the flowering stage is about 22°C. If the temperature is higher than 30°C, it will affect the physiological metabolism of passion fruit. This leads to abnormal development of the floral organs. It will also cause the pollen tube to shrivel, and the elongation of the pollen tube of the male pollen will be affected as a result, leading to a decline in the pollination and fertilization rate.
2. How to increase the fruit-setting rate in high-temperature weather
When growing passion fruit in high-temperature weather, pay attention to building a good flat-topped trellis. After the flat-topped trellis is built, the coverage of branches and leaves in the field can reach about 80. It can prevent most of the soil from being exposed to direct sunlight. It inhibits the speed of temperature rise in the field, thereby achieving the goal of increasing the fruit-setting rate. We can also appropriately grow grass between the rows of passion fruit plants, which can likewise lower the temperature in the field. It inhibits water evaporation and can also achieve the purpose of supplying water. This prevents a decline in the fruit-setting rate caused by a lack of water in passion fruit.
Then also pay attention to applying sufficient fertilizer, as fertilizer is one of the main ways for passion fruit to obtain nutrients for growth. When topdressing, pay attention to the nutrient ratio in the fertilizer, ensure fertilizer diversity, and provide sufficient growth nutrients for passion fruit. Because during the flowering stage of passion fruit, if the temperature is above 30°C, it is very unfavorable for pollination and fertilization. Therefore, during the flowering stage, if the temperature is too high, we should promptly spray water to cool it down, and during flowering we can carry out artificial pollination to increase the fruit-setting rate.
3. Artificial pollination
Artificial pollination is a key measure for increasing the fruit-setting rate of passion fruit in high-temperature weather. Because passion fruit pollen gradually loses its vitality under high-temperature weather, the self-pollination rate declines as a result, so artificial pollination is essential. However, we can spray an appropriate amount of bee attractant in the weather to lure bees and use bees for pollination. This can increase the fruit-setting rate by about 30%, and spraying bee attractant can also increase humidity and the stickiness of the female flower stigma. This prevents the pollen tube from shriveling, thereby achieving the pollination and fertilization rate.
The above is a brief introduction to the impact of high-temperature weather on passion fruit. That's all for today's introduction. This article is for reference only, and we hope it can help everyone!