Symptom: The infection of stem rot mostly occurs at the base of the stem.The morbidity initial period can have the Brown green yellow spot, the disease spot assumes the irregular shape.In the later stage, the lesions will become black and brown, depressed, and the subcutaneous tissue will rot and dry up, with black granules.
Prevention method: When cultivating, the substrate must be disinfected before use to ensure that there are no germs inside.Management should pay attention to the amount and frequency of watering each time, not to let the environment too humid, appropriate control of humidity, rather dry than wet.In addition, the early morbidity, to spray zineb, to avoid continued infection.
symptoms: Leaf spot disease is more from the edge of the leaf morbidity, the initial gray spots, slightly downward depression.After the late expansion, the edge will be dark brown, and the late lesions will slowly dry up, and there will be gray-black mildew.
Prevention and control method: Once it is found that it is infected with leaf spot disease, the diseased leaves should be removed in time to reduce the source of infection.In addition, the incidence of early drug use, the drug can be selected 800 times the liquid five chloronitrobenzene fungicide, or directly with this drug smeared on the leaves.
In order to avoid infection of Zygocactus, not only soil disinfection, but also management methods should be paid attention to.It should be placed in a well-ventilated place, especially in hot summer.Ensure good ventilation, but also reduce watering, must not provide hot, humid environment, otherwise it is easy to infection.