What causes deformed fruit in zucchini
What causes deformed fruit in zucchini? How should it be prevented and controlled? When zucchini produces deformed fruit, the causes are as follows: insufficient water and fertilizer. Insufficient water and fertilizer in the early fruit-setting stage easily forms pointed-tip fruit, insufficiency in the middle stage easily forms narrow-waisted fruit, and insufficiency in the late stage easily forms slender crooked-stem fruit. However, excessive fertilizer and water in the middle stage easily forms big-bellied fruit. Poll...
What causes deformed fruit in zucchini? How should it be prevented and controlled?
When zucchini produces deformed fruit, the causes are as follows: insufficient water and fertilizer. Insufficient water and fertilizer in the early fruit-setting stage easily forms pointed-tip fruit, insufficiency in the middle stage easily forms narrow-waisted fruit, and insufficiency in the late stage easily forms slender crooked-stem fruit. However, excessive fertilizer and water in the middle stage easily forms big-bellied fruit.
Poor pollination and uneven distribution of pollen cause the parts that are not adequately pollinated to become sunken.
Temperatures that are too high or too low both affect photosynthetic efficiency, resulting in insufficient nutrients being produced and inhibiting fruit development.
The female flowers themselves are defective, or bisexual flowers form fruit, resulting in deformation.
In order to promote early-maturing cultivation of zucchini to bear more high-quality fruit, in terms of cultivation measures, a good ecological environment must be created and management techniques improved.
Meet the fertilizer and water requirements. Zucchini needs relatively more fertilizer and has a strong ability to absorb nutrients. It is relatively drought-tolerant, but during the fruit expansion period it needs more water, so the soil must be kept moist. Therefore, first, apply sufficient base fertilizer; second, apply timely topdressing with a combination of nitrogen and potassium, and apply topdressing once after each batch of gourds is harvested. In the base fertilizer, apply 5000 kg of high-quality farmyard manure, 300 kg of cake fertilizer, 100 kg of phosphate fertilizer, and 50 kg of potassium fertilizer per mu, while also applying zinc fertilizer and magnesium fertilizer in appropriate amounts. Field moisture in the early stage should mainly be controlled by drying, and during the fruiting period, moisture management should be kept moist.
Pay attention to regulating temperature. Early-maturing cultivation mostly uses the method of plastic film greenhouses with small tunnels inside to increase and maintain temperature. The suitable temperature range for zucchini is 15--38°C, and the optimal temperature range for growth and development is 18--25°C; the suitable soil temperature is 12--35°C, and the optimal soil temperature is 15--25°C. Therefore, according to changes in climate, the timing of uncovering and covering the film should be adjusted, and in particular variable-temperature management should be carried out according to its temperature requirements, which is more conducive to accumulating nutrients and reducing consumption.
Carry out artificial pollination. From 8--10 a.m. every day is the peak period when male flowers open. Pick male flowers, remove their corollas, and gently place the anthers onto the stigmas of female flowers. One male flower can pollinate 3 female flowers. When air humidity is relatively high, the pollination effect is better. Pollination should be even and thorough. To ensure fruit set, hormone treatment can also be used in coordination. 20--30 mg/L 2,4-D can be applied on the same day the flower opens in the morning by dipping a brush in the liquid and applying it to the flower stalk or ovary, but be careful not to let the liquid spill onto stems and leaves to prevent phytotoxicity; 40--50 mg/L Tomato Hormone can also be sprayed onto the stigmas of female flowers.
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