What pesticide is suitable for controlling rot disease in orchids?
What pesticide is suitable for controlling orchid rot disease.
In the early stage of soft rot, tiny brown water-soaked spots appear on the leaves, then expand into black moist patches; at this point the lesions rupture very easily and exude a foul-smelling liquid. After that, the orchid plant will rot quickly. This disease generally occurs easily in rainy and humid seasons above 30°C. For orchid rot disease, you need to choose pesticides and treatments wisely:
After an orchid is infected with rot disease, promptly repot it and change the soil, cut off all tissues of the diseased parts and burn them in a centralized manner, then wash and disinfect the cut surfaces with clean water, apply sulfur powder, and place it in a cool, ventilated spot to dry; after the cuts shrink and dry, repot it again. After repotting, do not water or mist for 3 to 4 days, and spray once with a solution made from 50% thiram plus 500 times water. The growing environment should have enhanced ventilation and light. The rescued diseased plant should be temporarily isolated from other orchids to avoid contagion. Only after it grows normally and is no longer infectious may it be placed together with other orchids.
In the early stage of soft rot, tiny brown water-soaked spots appear on the leaves, then expand into black moist patches; at this point the lesions rupture very easily and exude a foul-smelling liquid. After that, the orchid plant will rot quickly. This disease generally occurs easily in rainy and humid seasons above 30°C. For orchid rot disease, you need to choose pesticides and treatments wisely:
After an orchid is infected with rot disease, promptly repot it and change the soil, cut off all tissues of the diseased parts and burn them in a centralized manner, then wash and disinfect the cut surfaces with clean water, apply sulfur powder, and place it in a cool, ventilated spot to dry; after the cuts shrink and dry, repot it again. After repotting, do not water or mist for 3 to 4 days, and spray once with a solution made from 50% thiram plus 500 times water. The growing environment should have enhanced ventilation and light. The rescued diseased plant should be temporarily isolated from other orchids to avoid contagion. Only after it grows normally and is no longer infectious may it be placed together with other orchids.