Farmers who grow tomatoes know that tomatoes are prone to various pests and diseases. The most harmful one is the tomato rot. Tomato tendon rot is a physiological disease that will seriously affect the quality and quality of tomato. So, what are the symptoms of tomato rot disease? How to prevent it? What are the precautions?
First, the symptoms of rot disease
The tendon rot is also known as strip rot and rot. The quality of the infected tomato fruit is reduced, which loses the value of the commodity and is not conducive to sales. It is mainly divided into two types.
1. Browning type: The disease occurs mainly on the young fruit of the first ear and the second ear. When the fruit is enlarged, the fruit surface will appear brown, uneven, and the fruit will become hard or form necrotic spots; It can be seen that there is brownish stripe necrosis in the peel, the flesh is brown, and the heart is hard.
2, white variant: from the appearance, the tomato peel is not evenly colored, red is small, orange, slightly uneven, cut open disease fruit, visible white part of the flesh "heart", the lesion becomes hard.
Second, the cause of tomato tendon rot
1, insufficient light
Tomato planting is poorly ventilated and poorly transmitted, and the tomato has insufficient long-term illumination time and light intensity, or the carbon dioxide concentration is low, which is easy to cause tendon rot.
2. Temperature conditions and soil conditions are poor
The tomato has a high night temperature during the expansion period, the temperature is uncomfortable, or the soil temperature is low for a long time, and the soil is too wet.
3. Fertilization is unreasonable
Partial application of nitrogen fertilizer, or if applied to human feces without fully decomposed, potassium fertilizer is seriously insufficient, prone to rot.
4, tomato varieties have poor disease resistance
When the growers choose seeds, the varieties they use are poor in their ability to resist rot.
(5) Disease hazards
Tomatoes can easily induce rot disease if they develop viral disease.
Third, the prevention measures of tomato tendon rot
1. Choose high quality varieties. When selecting seeds, use the excellent roots with developed roots and strong resistance to rot.
2. Implement rotation cultivation. Can be used with melons, leafy vegetables, etc., to avoid heavy planting.
3, reasonable close planting timely pruning. Reasonable close planting, timely pruning, it is recommended to use a single dry pruning method to improve ventilation and light transmission conditions, increase light.
4. Rational fertilization. According to the planting season and cultivation method, the base fertilizer (adding superphosphate) should be applied reasonably. In the result period, ammonium nitrate, urea and the like can be used as top dressing, and potassium sulfate is applied 1-2 times. Carbon dioxide can be applied when conditions permit. The surface was sprayed with 0.2%-0.3% potassium dihydrogen phosphate solution and 0.1% glucose solution.
5. Strengthen temperature, lighting and watering management. From November to April of the next year, pay attention to taking measures to increase the light. Under the film, dark (drip) irrigation can be used to water the water according to the weather and soil conditions. Strengthen the air release and insulation management measures, it is recommended that the daytime temperature is 25-28 degrees, and the nighttime is about 15 degrees.
6, timely prevention of pests and diseases to pay attention to prevention and treatment of viral diseases.
Fourth, matters needing attention
1, pay attention to the difference between the diseased fruit and the disease
Viral diseases usually have whole-plant symptoms such as mosaics and streaks, while tendon rot produces symptoms only on fruits, and generally does not produce symptoms on the stems and leaves of plants.
2, tendon rot and other symptoms
If the stem of the rot disease plant is cut at a distance of 20-70 cm from the root, it can be seen that the stem has turned brown; or the top and bottom leaves of the plant are curved, the petiole is long, and the middle rib of the small leaf is protruding and is covered with a ship. Such plants are also prone to rot.
The above are the symptoms, causes, preventive measures and precautions of tomato tendon rot. When planting tomatoes, growers must pay attention to the rot disease, so as to prevent it in time. Once infected, it will cause tomato death if it is serious.
For the wonderful pictures and popular comments about tomato tendon rot, you may be interested in the following recommended contents, please read.
Palm Recognition Time Attendance
Palm Recognition Time Attendance,Biometric Time Attendance System,Biometric Face Recognirion Software,Palm Recognition Temperature Face Time Attendance
Shenzhen Bio Technology Co., Ltd , https://www.huifantech.com