MySheen

Root rot of carnation

Published: 2024-11-06 Author: mysheen
Last Updated: 2024/11/06, Identification points: Carnation root rot mainly harms the root system. The growth of the plant was weak after infection, there were few whisker roots on the diseased plant, and the leaves wilted. In severe cases, the roots all turn brown, rot, the root bark is easy to peel off, and the plants wither. Occurrence characteristics: the pathogen belongs to Pythium. The pathogen lives on plant residues in soil and is an important soil-borne fungus, which can harm a variety of plants and cause Pythium root rot. The disease is serious when the soil or matrix is slightly alkaline and the humidity is high. It is easy to put under the conditions of too dense, too much watering, poor ventilation and so on.

Identification points: Carnation root rot mainly harms the root system. The growth of the plant was weak after infection, there were few whisker roots on the diseased plant, and the leaves wilted. In severe cases, the roots all turn brown, rot, the root bark is easy to peel off, and the plants wither.

Occurrence characteristics: the pathogen belongs to Pythium. The pathogen lives on plant residues in soil and is an important soil-borne fungus, which can harm a variety of plants and cause Pythium root rot. The disease is serious when the soil or matrix is slightly alkaline and the humidity is high. It is easy to occur under the conditions of too dense, too much watering, poor ventilation and so on.

Control methods: (1) pay attention to the improvement of soil or pot substrate, modulated into partial acidity; if the water used for watering flowers is alkaline, ferrous sulfate can be used to modulate the partial acidity, and pay attention to control soil moisture. (2) clean up the diseased plants in time and destroy them to reduce the source of the disease. (3) when the disease began in the field, the root was irrigated with 70% pentachloronitrobenzene powder 800-1000 times for several times, each time at an interval of 7 days.

 
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