Tomato cracking causes and control measures

Tomato cracking fruit is a physiological disease, and the causes of its formation are more complicated. In summary, there are several types.

 

1. Variety impact: Generally speaking, large fruit with thin peel and round fruit is prone to cracking, while thick and high round is a crack resistant variety. Therefore, it is very important to choose the variety in production. It is necessary to choose the variety of thick skin and storage and transportation.

 

2. Cracking fruit caused by improper fertilizer : The crop needs a large amount of potassium fertilizer during the fruit expansion period, and at the same time, the demand for nitrogen fertilizer is reduced. At this time, if a large amount of nitrogen fertilizer is used and the potassium fertilizer dosage is ignored, the potassium deficiency of the fruit will also be affected. The absorption of calcium and boron by crops. For example, one of the main causes of tomato umbilical cracking is the lack of mineral elements. Therefore, in order to prevent the imbalance of mineral element supply during the fruit growth period, the application amount of nitrogen fertilizer should be properly controlled, and potassium fertilizer should be appropriately added to meet the fertilizer nutrients needed for fruit growth and development. Generally, administration is twice the amount of potassium to Nitrogen.

 

3. Cracking caused by the dramatic changes in soil moisture content and air humidity : Some vegetable farmers use water control measures to prevent plant growth in the early stage of tomato growth, and use fertilizer and water to attack fruit development after entering the fruiting stage. Under the condition of sufficient water and fertilizer, the growth of tomato flesh is fast, and the relative growth rate of the peel is also the main cause of cracking.

 

To prevent this type of cracking fruit from starting to strengthen the water management in the shed, it is necessary for the vegetable farmers to pay attention before the flowering, pay attention to the soil in the shed at any time, see dry watering, and when the fruit is expanded after the flowering, We must keep the ground moist, try to avoid flooding of large water, prevent water accumulation in the field, and avoid drastic changes in soil dryness. We can adopt the method of “small water and multiple irrigation” to provide the water needed for crop growth and reduce the rate of fruit cracking.

 

4. Cracking caused by climate change : high temperature weather is easy to cause fruit cracking. Because of the high temperature, the temperature in the shed rises, the transpiration of the plant accelerates, and the water lost by the fruit is not replenished in time, which may cause skin damage, and even lead to the day. Burning, these small damages in the wet shed temperature, the surface of the peel will gather a lot of water, the water will penetrate into the pulp through the wounds, causing the flesh cells to swell, when the flesh cells expand to a certain extent, the peel The crack will occur around the wound.

 

5. Cracking fruit caused by improper use of hormones : Tomatoes were difficult to sit fruit in the previous period , and the vegetable growers increased the concentration of anthers, and the amount of hormones increased, causing the tomatoes to crack. Therefore, the vegetable farmers must test before using the anther, and then apply it on a large scale.

 

6. Cracking caused by boron deficiency : Boron deficiency is also a cause of tomato cracking. The borax 600 times or boron-containing foliar fertilizer can be sprayed in the flowering stage to timely supplement the boron element to prevent the tomato from cracking due to boron deficiency.

 

7. Cracking fruit caused by unreasonable use of drugs : Some vegetable farmers are arbitrarily increasing the concentration of the drug for the prevention and treatment of a disease. The excessive use of the drug affects the growth rate of the peel and causes the tomato to crack. In addition, when the temperature is too high during spraying, the liquid evaporates quickly, causing the concentration of the drug solution remaining on the fruit surface to rapidly increase. Under the stimulation of the drug, the peel is prone to cracking and forming a crack. Therefore, in the production of pharmaceuticals, do not arbitrarily increase the concentration of the drug, according to the acidity and alkalinity of the pesticide, scientific compounding, but also pay attention to the spraying time, generally choose from 9:00 am to 11:00 am or in the afternoon, after the tomato fruit surface is exposed get on.

 

There are many reasons for causing tomato cracking. I hope to find out the real reason for the cracking of tomatoes in their greenhouses according to the above, and treat them symptomatically.

 

 

 

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