What causes zucchini fruit abortion? Early spring greenhouse prevention and control measures
In early spring zucchini cultivation in greenhouses, the fruit is prone to stopping its expansion midway, turning yellow, and wilting. Eventually it becomes shriveled; this symptom can appear both before and after flowering, and is commonly known as fruit abortion. The causes of fruit abortion are as follows: 1. In early spring cultivation, the assimilation capacity of the leaves declines, and the plant accumulates less through photosynthesis. 2. Due to...
In early spring zucchini cultivation in greenhouses, the fruit is prone to stopping its expansion midway, turning yellow, and wilting. Eventually it becomes shriveled; this symptom can appear both before and after flowering, and is commonly known as fruit abortion. The causes of fruit abortion are as follows:
1. In early spring cultivation, the assimilation capacity of the leaves declines, and the plant accumulates less through photosynthesis.
2. Because zucchini is a cross-pollinated vegetable, under low temperature and high humidity the pollen develops poorly and is not easily released, so the female flowers cannot receive pollen for fertilization, resulting in fruit abortion.
3. In early spring greenhouse cultivation, the influence of low temperature and short-day conditions causes zucchini to produce many female flowers and few male flowers, thus causing poor pollination and fruit abortion. In some varieties, pollen development is incomplete under low temperatures, which can also cause fruit abortion.
Prevention and control methods: First, cultivate robust plants and promote plant growth and development. Second, control the nighttime temperature to prevent it from being too high, so as to reduce respiration consumption; at the same time, apply carbon dioxide gas fertilizer before ventilation to promote assimilation. Third, use artificial pollination or hormone treatment. For artificial pollination, choose to do it before 9 a.m. on a sunny day, pick the male flowers that are fully open that day, tear off the petals, and place the entire stamen directly onto the stigma of the female flower to carry out artificial pollination.