Why do tomatoes crack? What are most of the causes?

Species Species Generally, large and medium-sized fruit species with thin exocarp and annular pericarp are very prone to fruit rot, while species with thick exocarp, large, medium and small fruits, and storage and transportation are difficult to produce fruit rot. Unreasonable fertilizer Tomatoes must have a lot of potassium fertilizer in the fruit growth period, and if you still use a lot of base fertilizer and ignore potassium fertilizer, it will lead to the lack of zinc in the fruit, and at the same time, it will continue to harm the digestion and absorption of calcium and boron. One of the main causes of top rot is the lack of calcium.

Hot weather is also very easy to cause fruit rot, because under the hot weather standard, plant respiration is accelerated, the water lost by the fruit can not be immediately filled, it is very easy to cause exocarp injury, resulting in rotten fruit. Strong Transition of Soil Water Content Intense changes in soil moisture content and humidity can lead to fruit rot. In greenhouses, if tomatoes are in the early stage of gestation, in order to avoid plant growth, drain the water, but after entering the fruiting period, in order to promote the growth and development of fruits, liquid fertilizer is used to slam it.

Under the premise of abundant liquid fertilizer, the growth and development rate of tomato fruit is faster, and the relative growth and development rate of exocarp is relatively slow, and the fruit will burst the exocarp, and then produce the same boat wheel striated crack. In the planting of tomatoes cultivated in the open field, the normal close to the ripe fruit, although the exocarp is not senescent, but after heavy rain or flooding, the pulp cells absorb moisture, and the exocarp will crack and produce mixed grain rotten fruit. In general, the strong transition of soil moisture content is the main factor that causes tomato rot.

In tomato planting, in order to make the natural ventilation and light transmission between the plants and improve the color level of the fruit, too early and too many leaves under the plant are removed, which often causes the total number of leaves to be insufficient, and the fruit can not get sufficient nutritional value and rot the fruit. In addition, leaving too much fruit can cause fruit rot due to the inability of the fruit to obtain sufficient nutritional value.

In the pest control of tomatoes, casually increasing the concentration value of the drug, especially when spotting flowers, the wrong operation of growth hormone, and the concentration value is too high, which will lead to rotten fruit in tomatoes.

Personally, I think there are many reasons for tomato cracks, if there is a long-term drought in the later stage of its growth, or there is too much moisture in the soil, it will lead to a thinner skin of tomatoes, resulting in fruit cracking; At the same time, when the temperature is low or high, or when the nutrients are insufficient, it will cause the tomato to to crack. Therefore, during the planting period, it is necessary to give water and nutrients reasonably, because the lack of any element may lead to fruit cracking. Large fruit varieties, pink varieties, round fruit varieties, and varieties with thick cork layer are prone to cracks, while small and medium-sized varieties, large red varieties, high-pile fruits, and varieties with thin cork layer have fewer cracks and mild symptoms.

Tomato splitting is a physiological phenomenon, and the main reason for the occurrence of cracked fruit is water imbalance, which is also related to the variety.

This is due to the fact that the tomatoes have taken too long to ripen, which is why they have cracked. There is no control of the prosperity, the nutrition is abundant, the amount of fertilizer is too high, the growth time is too long, and the sun shines for too long.

<> "There are many reasons for tomato cracks, if there is a long-term drought in the later stage of its growth, or if there is too much moisture in the soil, it will cause the tomato to have a thinner skin, resulting in fruit cracking; At the same time, when the temperature is low or high, or when the nutrients are insufficient, it will cause the tomato to to crack. Therefore, during the planting period, it is necessary to give water and nutrients reasonably, because the lack of any element may lead to the cracking of the fruit of Qingsheng Dou.

1. In the late stage of fruit development and infiltration or veraison period, high temperature, scorching sun, drought, excessive moisture and other conditions in summer, the fruit skin is thin, the water content of the pulp is more, and the growth of the peel is not suitable for the growth of the pulp tissue, resulting in the increase of swelling pressure and the phenomenon of fruit cracking;

2. During the growth of fruits, the soil moisture is uneven, which is the main reason for fruit cracking. However, the resistance to cracked fruit is also different among different varieties, and generally the small-fruited varieties with small elongated fruit pedicles and shallow ridges and grooves or varieties with large leaves and thin cork layer in the pericarp have strong crack resistance.

3. Under low temperature conditions, especially in winter greenhouse tomatoes, poor pollination of flowers is deformed and flower column cracking;

4. High or low temperature affects the absorption of calcium and boron in tomatoes, which is the main cause of fruit cracking. After calcium absorption, it combines with oxalic acid in tomato plants to form calcium oxalate. If calcium absorption is low, oxalic acid is high, which can damage heart leaves and flower buds, resulting in fruit cracking.

A big factor in the cracking of the red tree is the lack of calcium and trace elements in boron, for example, the cracking of the umbilicus of the tomato is caused by the lack of calcium and boron. In the fruit growth period, the need for a large amount of potassium fertilizer and the demand for nitrogen fertilizer decreased, if the potassium fertilizer is ignored during this period, the lack of potassium per mu will also affect the absorption of boron by crops. If a sufficient amount of boron and calcium fertilizer is applied, there is still a phenomenon of fruit cracking, which is caused by the obstruction of the root absorption of Xunwanghe due to high temperature and drought.

This is because high-intensity light, uneven moisture, drought, improper fertilization, low temperature and weak light, these reasons will cause tomato cracks, the measure is to re-plan the fertilizer, water on time, add nitrogen fertilizer, so that it can be remedied.

The climate is too arid, there is no timely irrigation of water, the sun is too long, there are diseases and pests, and the tomatoes are overripe; It can be remedied by timely irrigation of tomatoes and strengthening corresponding protective measures.

It may be that there is more water, it may be that the climate is relatively dry, it may be that the temperature is relatively low, and it may be a lack of nutrients; The temperature must be ensured, and it should also be watered in time, and phosphate, nitrogen, and potassium fertilizers should be supplemented.

It's because the tomatoes are ripe so much that there are cracks. You can water less and fertilize a little less to slow down the time it takes for tomatoes to ripen.

Fruit cracking generally occurs during veraison, so most of the reasons for fruit cracking are due to improper management during this period. For example, sudden watering after a drought during the color-changing period leads to uneven fruit development, and the pressure of flesh expansion is too great, resulting in fruit cracking. For example, the concentration of growth regulators is too high, the fruit expands too fast, and the physiological imbalance of fruit development leads to fruit cracking.

Of course, it doesn't have to be a problem of post-management. Improper upfront management can also lead to tomato fruit cracking. For example, too early picking and heading of tomatoes will provide too much nutrients to the fruit, and too fast development will also cause tomato fruit cracking.

If you want to put an end to fruit cracking, in fact, the safest way is to buy a variety of fruit resistant to fruit cracking with thick skin, which can largely prevent fruit cracking in the later stage.

2.Choose spring tomatoes. Generally speaking, the early arrival of tomatoes in spring can largely avoid fruit cracking caused by heavy watering in the hot and dry season. However, in the open field cultivation in summer, the tomato with plastic film is later in the autumn, and the temperature difference between day and night in the greenhouse is too large, resulting in fruit cracking.

3.The bottom leaves should not be removed too early, because the direct sunlight causes the skin of the fruit to lose water and shrink, and the expansion pressure increases after the fruit develops, which increases the probability of fruit cracking. The bottom leaf protects the fruit to a certain extent.

4.Fertilization should be balanced. As the saying goes, water flows forever, and you should be more careful when using chemical fertilizers during the fruit discoloration stage. If you're not sure enough, you can even stop fertilizing temporarily.

5.Appropriate calcium supplementation. Calcium can prevent cracking of fruits, such as grapes, to a great extent. As one of the backbone elements of calcium cells, it greatly improves the toughness of the peel and reduces the probability of fruit cracking.