With the rise in temperature, various crop diseases have come one after another. In the process of growth, tomato will cause wilting due to wilt disease, bacterial wilt and physiological water shortage. At this time, measures should be actively taken to prevent and remedy the disease.
Physiological water shortage occurs mostly in the cold season, which is mainly caused by poor root growth, resulting in hollow and wilting of tomato stems. The most suitable soil temperature for tomato root growth is 20°C～22°C, and 9°C～10°C soil temperature will cause the root hairs to stop growing. When the soil temperature drops to 5°C, the ability of the root system to absorb water and nutrients is seriously hindered, even at this time When the weather is clear, the temperature of the shed quickly rises, and it is difficult for the root system to absorb water quickly, causing the plants to wilt. Usually when the temperature rises steadily, the symptoms will be relieved when the roots return to normal.
The wilting phenomenon caused by wilt disease and bacterial wilt is different. The main differences between the two are as follows: First, different pathogens, bacterial wilt is a bacterial disease, blight is a fungal disease, and second, the disease growth period is different, and the bacterial wilt is different. When the plant height begins at 30 cm, wilt disease generally occurs during the fruiting period; third, the wilt phenomenon is different. The wilt disease strain is wilted during the day and recovers in the evening. The wilt disease plant is wilted during the day and does not recover in the evening; Differently, the course of bacterial wilt disease progressed rapidly. Severe diseased plants died after 7 to 8 days, while the disease progression of the wilt disease was slow. The diseased plants usually took 15 to 30 days to die; the fifth was the color of the leaves after wilt disease. It remains green, but the leaf color of the wilt diseased plant turns yellow after it has died. Sixth, the color of the liquid that overflows from the cutting stem is different. The section of the bacterial wilt disease strain overflows the white fungus liquid, but the wilt disease strain does not.
Preventive measures: (1) During the cultivation of tomato in winter and spring, pay attention to the protection and promotion of root growth of plants, such as strengthening the insulation; do not apply nitrogen fertilizer, appropriate application of trace element fertilizers rich in trace elements; apply root-reinforcing agent; after rainy days or strong light At the time, the cover is gradually removed. (2) Strengthen disease monitoring, early prevention and early treatment, and rational drug use.
Flakes,Granules,Powder of Dried Red Bell Pepper and Green Bell Pepper,Dehydrated Green Pepper,Dehydrated Green Pepper Granule
Xinghua Lvwei Foods Co.,Ltd , https://www.lvweifoods.com