What are the preventive measures for hollow strawberries?
After strawberries bear fruit, not all fruits develop well; sometimes problems arise, such as hollow fruit. The fruit looks the same as other fruits, and the size is normal, and some are even quite large. But when cut open, the strawberry is hollow inside in the form of a long slit, and the taste is not as good as normal strawberries. Today I will explain what causes this and how to prevent it.
I. Causes
1. Low temperature
Low temperatures during the fruiting period affect growth, causing slow development. When temperatures rise later, growth speeds up again; this uneven development before and after causes splitting and hollow cavities.
2. High temperature, weak light
Poor light during flowering, or sustained high temperatures above 35°C, will affect flowering and flower development. If rain then occurs, it can directly cause some pollen to lose viability, resulting in poor pollination and fertilization and poor fruit growth.
3. Boron deficiency
If the plant grows weakly or is harvested too late, or if the supply of nutrients and water is insufficient, or if it is not harvested and keeps growing, aging, losing water and consuming more nutrients, cavities will form. In addition, transporting nutrients into the fruit requires sufficient boron; boron deficiency may cause hollow fruit.
4. Effect of swelling agents and varieties
Do not use swelling agents; accelerated growth easily leads to hollow interiors, and supplementing too much water after drought easily causes hollowing. Some varieties are inherently prone to hollowing, such as the Sachinoka variety.
II. Preventive measures
1. Adjust temperature and light
As far as possible, use greenhouse or other protected cultivation to avoid low temperatures below 10°C, and adjust the temperature at all times. It is best to maintain a growing temperature of 20°C to 25°C, and do not exceed 35°C; high temperatures easily affect pollination and fertilization. During flowering, sufficient light must be received; insufficient light easily causes flower drop and incomplete flower organ development, affecting the fruit.
2. Control fertilizer and water
During flowering and fruit set, spray sufficient boron fertilizer and calcium fertilizer to promote nutrient transport and supply into the fruit. Maintain a balanced supply of fertilizer and water throughout all stages of the growing period. Do not let fertilizer or water run short. In addition, thin flowers and fruits to ensure concentrated supply of fertilizer and water to the fruit. Normally maintain 60% soil moisture; during flowering maintain 45% soil moisture; during fruiting maintain more than 65% water content. Water shortage should also be avoided in the later growth stage.
The above are the specific causes of hollow strawberries. Then prevent them according to the causes: adjust temperature, light, water and fertilizer, and nutrition to prevent hollowing. Thank you for reading. The above content is provided for your reference, and you can also combine it with practical operation.