Why do tomatoes crack and how to remedy them?

Hello, tomato fruit cracking is generally easy to occur in the fruit veraison stage, the fruit cracking not only causes the decline of fruit commerciality, but also is susceptible to the invasion of pathogens, induces soft rot and rot, and affects the yield. There are several reasons: 1. Climate.

High temperature and scorching sun lead to root physiological dysfunction and obstruction of boron absorption, and wood plug-like cracks appear on the fruit surface. Low temperature affects the differentiation of flower buds and causes fruit cracking. 2. Water ** imbalance. In the early stage of tomato fruit development, soil drought, sudden heavy rain or high temperature and dryness during the day, and evening irrigation will lead to the growth of the peel unable to keep up with the expansion rate of the pulp tissue, and the fruit will crack. Or after continuous rainy weather, the fruit peel is excessively dehydrated and cracked.

3. Improper use of hormones. The use of plant growth regulators, excessive concentration or high temperature at noon, will cause physiological disorders and produce fruit cracking. 4. Deformed flowers.

Low temperature, or nutrient deficiency of reproductive elements such as phosphorus, boron and zinc at the stage of flower bud differentiation, forms deformed flowers, resulting in fruit cracking. Therefore, winter tomato planting needs comprehensive management, good water management, balanced and scientific fertilization, and prevention of pests and diseases. It is recommended to apply weibu root power calcium + weibu energy + Indile organic essence powder at the seedling stage and continuous flowering and fruit setting stage, and spray the leaves with weibu fruit power + weibu flower power to promote the seedling strength, flower more and stronger, fruit expansion and high yield.

1. Choose thick peel, high pile, small and medium-sized varieties. 2. Heavy application of organic fertilizer and less nitrogen fertilizer to improve soil moisture retention capacity. 3. Supplement boron fertilizer and calcium fertilizer during flowering and fruiting period.

Tomato fruit splitting is a common physiological phenomenon. There are usually three types of fruit cracks: one is radial fruit splitting, this type is centered on the fruit pedicle, extending to the shoulder of the fruit, showing radial deep lobes, starting at the green ripening stage of the fruit, producing fine stripes and cracking near the fruit pedicle, and the crack is obvious 2 to 3 days before veraison; The second type is annular fissure, which is centered on the pedicle and has a shallow annular lobe, which generally appears before the fruit is ripe; The third type is the striped fissure, which is irregularly striped at the top of the flower scar.

The main reason for the cracking of tomato fruits is water imbalance. In the late stage of fruit development or veraison, when the growth of the peel is not synchronized with the expansion rate of the pulp tissue, the expansion pressure of the fruit increases, resulting in the phenomenon of fruit cracking. In particular, showers or torrential rains hinder the physiology of the root system, hinder the absorption and operation of boron, and fruit cracking will occur.

The fruit cracking is also prone to fruit cracking after being exposed to strong sunlight and sudden rain, or after continuous rainy weather, the sky suddenly clears and the peel is excessively dehydrated, which is especially serious in the rainy season. In addition, the fruit splitting of tomato is also very related to the variety, with varieties with thin peel prone to fruit splitting, while varieties with thick peel are less likely to crack fruit. However, tomato cracking has little to do with the size of the fruit, and even small fruit-shaped varieties such as cherry tomatoes can easily crack the fruit.

The main aspects of preventing tomato fruit cracking are as follows:

1) Variety selection.

It is advisable to choose varieties that are resistant to cracking, have lush foliage, and have thicker and tougher peels.

2) Keep the soil moist often.

Mulching or straw mulching is used to maintain a relatively stable soil moisture, and to prevent sudden dryness and wetness, especially when entering the fruit expansion and harvest period, it is necessary to keep the soil moist.

3) Deep furrow and high furrow cultivation were used to increase organic fertilizer to improve soil structure and improve soil water and fertilizer retention capacity.

4) Timely and appropriate pruning and topping to ensure that the plants are luxuriant, strengthen the transpiration of excess water in the plants, and prevent strong light from directly hitting the fruits.

5) Harvest tomatoes in time before heavy rains.

6) On the basis of maintaining a relatively stable soil moisture content, spraying the plant with Bordeaux liquid after the fruit enters the expansion stage has a significant effect on preventing tomato fruit cracking.

In addition, in the case of boron deficiency in the plant, cracking can also occur at the end of the fruit stalk. In terms of prevention, borax should be appropriately increased when ploughing the ground, generally per 667 square meters of kilograms; Once this cracking occurs, borax should be sprayed in a timely manner.

Solution: 1. You can use a shade net to reduce direct sunlight.

2. Increase the use of organic fertilizer and balance fertilization.

3. Improve soil structure and improve plant stress resistance.

4. Strengthen the temperature and humidity management in the shed to improve water retention. Watering in excessively dry conditions, and high temperatures in the middle of the day can cause fruit cracking. The temperature should not be too low, especially at night, and it should not be below 8 degrees Celsius for a long time.

5. Spray paclobutrazol appropriately at the seedling stage to ensure the growth of tomato plants, and you can also spray calcium chloride or copper sulfate, zinc sulfate, high-lipid film and other agents in the fruiting period to reduce fruit cracking. At this stage of flowering and fruiting, spray calcium foliar fertilizer.

6. The selection of varieties with thick skin and crack resistance is also conducive to reducing the occurrence of cracked fruits.

1. Characteristics of the variety. Generally speaking, varieties with thicker peels and resistant to transportation have slightly worse annular cracks; Varieties with thin skins are more severe. Therefore, it is very important to select varieties, and it is necessary to select resistant varieties with thick peel and storage and transportation.

2. It is suitable for the wind to be released without branches. There is a large temperature difference between day and night in the shed. The fruit surface and leaves are prone to condensation.

If there is a lot of dew on the fruit surface, the water on the fruit surface will evaporate rapidly, and it is easy to appear that the wind sweeps the fruit as the vegetable farmer said, which is manifested as the fruit surface cracking. Therefore, it is important to let the wind out at the right time.

3. Unbalanced fertilizer and water. 7-20 days after the tomato is dotted is the period of rapid fruit expansion, and sufficient water and fertilizer** are required to improve the yield. If there is uneven drought and flood, the fruit is prone to ring cracking.

Therefore, after the tomatoes enter the fruit expansion period, according to the soil moisture of the shed, top dressing and watering in time are carried out, and the chaos is guaranteed to be too dry and wet, and there is no water and fertilizer.

4. Picking fruit too late. There is a period of swelling in the post-ripening period of the fruit, and if the fruit is not picked in time, it is easy to have small longitudinal cracks; If the fruit is picked too late, it is often said that it is too ripe", and a long crack will appear extending downward from the fruit stalk. Therefore, it is necessary to remove the fruit in time when it reaches commerciality.

According to the location and morphology of the occurrence, it can be divided into 3 types:

1. Radial fissure, which is radial with the fruit pedicle as the center, and the fissure is generally deep;

2. Annular fissure, with the fruit pedicle as the center of the circle, showing annular shallow lobes;

3. Strip-shaped cracks, that is, irregular strip-like cracks at the top of the fruit. After the fruit cracking, the quality of the fruit decreases, and the pathogens are easy to invade, resulting in rot.

Causes of tomato opening:

1. Caused by deformed flowers;

2. Due to strong light exposure in the late stage of fruit development or veraison period, high temperature and drought, especially after a long period of drought, it is easy to cause the growth of the peel to be out of sync with the expansion rate of the pulp tissue, and the expansion pressure increases and the fruit cracks;

3. Improper use of plant growth regulators, excessive concentration during use, water and fertilizer can not keep up, causing physiological disorders and fruit cracking;

Fourth, it is too early topping, resulting in the concentration of nutrients in the fruit and causing fruit cracking.

Tomato opening control measures.

1. Choose crack-resistant varieties, generally choose small and medium-sized varieties with thick peels.

2. The temperature of the seedling stage, especially the flower bud differentiation period, should not be too high or too low, the daytime temperature should be kept at about 2-4, the night temperature should be kept at 15-17, and the night temperature should not be lower than 8 for a long time.

3. Prevent strong light from shining directly on the peel. In late autumn and early spring planting, do not knock off the bottom leaves too early, which can play a role in shading the fruit.

4. Prevent the soil from being too dry or too wet, and keep the relative humidity of the soil at about 80%.

5. Increase the application of organic fertilizer and biological fertilizer to improve the soil structure and provide a good environment for the growth of the root system. The foliar surface should be regularly supplemented with calcium, boron and other trace elements.

6. The correct use of plant growth regulators, when using hormone spraying, the concentration is not easy to be too large, and the concentration should be reasonably determined according to the variety and temperature.

7. Pruning should be moderate, keep the plant with lush leaves, strengthen the transpiration of excess water in the plant, and avoid nutrient concentration of fruit cracking caused by ** fruit.

8. Pharmaceutical prevention and control: should be sprayed with Master Hou No. 8 fungicide for prevention and control, 40g mixed with 15 kg of water to apply an acre of land generally every 7-10 days 1 time, spray 3-4 times. Better results.

Tips】1Fungicides should not be mixed with alkaline pesticides and biological agents to prevent pesticide damage.

2.Pay attention to the weather when spraying, avoid high temperatures and rainy seasons, and try to choose the morning or evening.

Tomato fruit cracking mostly occurs in the fruit ripening stage, some of them are annular shallow fissures around the fruit pedicle as the center, and some of them extend to the shoulder of the fruit with the fruit pedicle as the center, showing radial deep fissures, which start to occur from the green ripening stage of the fruit, and most of them are dry cracks. Tomatoes are not resistant to storage and transportation after cracking, and are susceptible to pathogen infection and cause rot, which affects the sales and profitability of vegetable farmers. Tomato fruit cracking is mainly due to the high temperature and drought during the growth and development of the fruit, which inhibits the growth of the epidermis of the fruit, and then encounters heavy rain or irrigation, and the rapid increase of soil moisture causes the growth of the peel to keep up with the expansion of the pulp tissue and causes the fruit cracking.

The resistance of different varieties to cracked fruit varies greatly, and generally the fruit is thin, the fruit shape is oblate, and the large-fruited varieties are prone to cracking. To control tomato cracking, some crack-resistant varieties can be selected, such as Maofen 802, Zhongshu No. 6, etc.; During cultivation, the soil is deeply turned, and organic fertilizer is applied to enhance soil water retention and permeability, promote root growth, and buffer drastic changes in soil moisture. In addition, irrigation should be reasonable to keep the soil warm and moist in the field and prevent the soil from being too dry or too warm.

The reasons for the fruit cracking of tomatoes are: first, the temperature at the seedling stage is low, the ovary is not developed normally, and the fruit is cracked after expansion; Second, the concentration of plant life regulators is too high; Third, after rainfall, the root system absorbs a large amount of water or the cork tissue in the skin of the fruit directly absorbs water; Fourth, it is exposed to strong sunlight after rain; fifth, excessive maturity; Sixth, some varieties have larger fruit shapes, thinner peels, poor ability to adapt to the external environment, and are prone to fruit cracking. Measures to prevent fruit splitting:

The first is to select crack-resistant varieties and cultivate strong seedlings; Second, deep ditches and high ridges should be achieved in rainy land and rainy seasons to facilitate timely drainage, timely watering in times of drought, to prevent the soil from being too dry, and to ensure that the soil moisture is balanced. Third, the concentration of plant growth regulators should be appropriate; Fourth, harvest in advance at the right time to reduce the number of cracked fruits.

Tomato fruit cracking disease is a phenomenon in which cracks appear on the surface of the peel when the fruit is nearing ripeness. There are three main types of cracked fruits: radial, ring, and striated. The radial fissures are initially at the green ripening stage of the fruit, and the fine stripes and cracks are produced near the fruit pedicle, and the cracks are obvious 2 to 3 days before veraison, and the cracks are radial, with the fruit pedicle as the center, extending to the shoulder of the fruit, showing radial deep fissures. annular lobed fruit, which is annular shallow lobed around the fruit pedicle, mostly appears when the fruit is nearly ripe; Streaked fissures are irregular strips at the top of the fruit.

Causes of fruit cracking: The main cause of fruit cracking is uneven soil moisture**. The soil is dry for a long time, the peel stretchability is reduced, and the pulp expands rapidly when suddenly watered, which makes the peel crack.

Methods to prevent this from happening: the supply of soil moisture should be even; Protects the fruit from sunburn.

Can you still eat tomato cracked fruit and why does it crack fruit? After reading it, I realized that we were all wrong!

Tomato cracks, i.e., irregular strip-like cracks at the top of the fruit. After the fruit cracking, the quality of the fruit decreases, and the pathogens are easy to invade, resulting in rot. Causes of fruit cracking:

First, the temperature at the seedling stage is low, the ovary is not developed normally, and the fruit cracks are produced after expansion; Second, the concentration of plant life regulators is too high; Third, after rainfall, the root system absorbs a large amount of water or the cork tissue in the skin of the fruit directly absorbs water; Fourth, it is exposed to strong sunlight after rain; fifth, excessive maturity; Sixth, some varieties have larger fruit shapes, thinner peels, poor ability to adapt to the external environment, and are prone to fruit cracking.

Measures to prevent fruit cracking: first, select crack-resistant varieties and cultivate strong seedlings; Second, deep ditches and high ridges should be achieved in rainy land and rainy seasons to facilitate timely drainage, timely watering in times of drought, to prevent the soil from being too dry, and to ensure that the soil moisture is balanced. Third, the concentration of plant growth regulators should be appropriate; Fourth, harvest in advance at the right time to reduce the number of cracked fruits.

Can you still eat tomato cracked fruit and why does it crack fruit? After reading it, I realized that we were all wrong!

There are two stages of tomato cracking, one is the juvenile stage and the other is the ripening stage. The cracked fruit here refers to the cracked fruit in the ripening period. Cracking of tomato fruit at the ripening stage has a great impact on the commerciality of tomatoes, which directly affects the income of vegetable farmers, and is a problem of great concern to the masses.

There are many factors that affect fruit splitting, but the core reason for fruit cracking is that the aging tomato skin cannot resist the strong expansion pressure from the inside of the fruit, so it is easy to form fruit cracking. 1.Early stage of fruit expansion:

Keep the soil moist, control the humidity in the shed, do not dry and wet, prevent strong light from directly irradiating the fruit, and prevent the peel from aging. Veraison and ripening period: avoid flood irrigation, maintain soil moisture, avoid excessive temperature difference in greenhouses, and avoid cold wind blowing directly on the surface of fruits.

2.Calcium deficiency can easily cause tomato fruit cracking, so calcium supplementation is important to prevent fruit cracking. When applying base fertilizer, calcium phosphate or calcium-magnesium-phosphate fertilizer is used.

Continuously spray 300 times milk or soy milk at the seedling stage and plant growth stage. Calcium-containing compound micro-fertilizers such as calcium chloride solution can also be sprayed during the fruit growth and development period. 3.

Use of growth hormone. In seasons when fruit splitting is more likely or when planting varieties that are more prone to fruit splitting, the application of growth hormone treatment can also reduce fruit splitting. Add a little gibberellin to hormones such as 2,4-d or anti-drop hormones at the time of spotting.

Add 2-3 drops of gibberellin to each pot. At this time, gibberellin can promote growth, and it is easier to form empty fruits, but slightly empty fruits are less likely to crack. Alternatively, spray once a week with indoleacetic acid (15 ppm) or gibberellin (15 ppm) or spray 80-100 times of 27% high-lipid film emulsion when the fruit is bean size.

Ethephon can be used to ripen during veraison. After using ethephon, the fruit contents are in a decomposition stage, which can reduce the pressure of fruit expansion to reduce fruit cracking. 4.

If the fruit is cracked during the ripening and veraison period, it can be picked in advance and placed on the ridge to let it slowly turn color, and generally will not crack the fruit. Through the above preventive measures, the tomato fruit cracking can be greatly reduced, the commodity rate of ripe fruits can be increased, and the income of vegetable farmers can be increased.