What causes tomato stem rot? Causes and control methods
Tomato is a common fruit vegetable for us, and its sweet-and-sour taste is loved by many people. As its market demand grows, its planting area has been increasing year by year. When planting, many people inevitably encounter many problems, and among them many growers suffer greatly from tomato stem rot. So what is going on? And how should it be controlled? Let's go to Qinongwang and look at the causes of tomato stem rot and control methods.
Cause one: improper watering, high soil moisture
Although tomato needs a large amount of water during growth, it should not be watered too much each time; keeping the soil moist is enough. Overwatering causes waterlogging, which leads to excessively low ground temperature and poor soil permeability, thus causing root rot and stem rot.
Control method: When planting, choose loose soil with good drainage. Tomato has different water requirements at each growth stage, so watering should be done scientifically. Watering can be frequent, but each watering should not be excessive. If there is too much watering or the soil moisture is relatively high, the tomato's light duration can be increased, using the transpiration of the leaves to evaporate excess water.
Cause two: low temperature
The optimal temperature for tomato planting and growth is 20-30 degrees. When the temperature is below 13 degrees, its growth slows down. Being at a temperature below 13 degrees for a long time leads to poor growth and development, and below 6 degrees, the plant suffers freeze damage, causing stem rot.
Control method: This phenomenon mainly occurs in cold northern regions and rarely occurs in southern regions. If the temperature is too low, greenhouse technology can be used to continue raising the temperature and keeping it warm, keeping the temperature above 15 degrees.
Cause three: large temperature difference between day and night
The suitable growth temperature for tomato is between 25-28 degrees during the day and between 16-20 degrees at night. When the temperature difference between day and night is relatively large, it damages the roots, causing the plant to wilt and the stem to rot.
Control method: This situation mainly occurs in southern regions in late spring and early summer, when daytime temperatures are high and nighttime temperatures are low, which easily causes problems in the plants. If the daytime temperature is too high, shading can be used, and at night artificial heating can be used or they can be planted in a greenhouse.
Cause four: diseases
If the seeds and soil are not disinfected before planting, or there is long-term continuous cropping, the pathogens in the soil multiply, and these pathogens easily cause diseases such as tomato bacterial wilt and fusarium wilt, and these diseases all lead to stem rot in the plants.
Control method: Disinfect the seeds and soil before planting. If diseased plants are found, pull them out and burn them in time, and spread quicklime or plant ash on their soil to disinfect and sterilize, and apply pesticides for treatment.
The above is Qinongwang's introduction to the causes of tomato stem rot and control methods. I believe everyone has also gained some understanding of the causes of tomato stem rot, and Qinongwang also brings you related control methods. Hope it can help you.