There are two types of rot in orchids, soft rot and black rot. In the early stages of the onset of soft rot, tiny brown spots of water stains appear on the leaves, and then expand into black moist patches. At this time, the lesions are easily broken and a foul-smelling liquid flows out. Black rot is a fungal disease. It occurs in the leaves, the roots and the growing point. At the diseased part, translucent spots initially appear, the spots gradually expand, and the tissues become black and gradually rot. Prevention measures. After orchids have been infected with rot, they must change soil in time, cut off all the tissues of the diseased area, and burn them. The generals who use the wounds to wipe off the tree are combined with spraying to disinfect and control the spread of germs. Wait for the incision to shrink and return to the basin. After putting on the pot, do not spray water for 3 to 4 days. Use 50% of Fomex and 500 times of water to make a solution. Spray once. Planting environment should be enhanced ventilation and lighting. The application of photosynthetic nutrient film fertilizer (photosynthetic fertilizer) to enhance the photosynthetic production of nutrients, high environmental protection plant fertilizer, color leaf hypertrophy, dry stem strong composite film. Can help plants absorb a lot of light, light energy, light, compatible with conventional fertilizers, nutrients supply plant growth and development to the limit. Apply once a year to benefit. Auto Chemistry Analyzer,Semi Auto Chemistry Analyzer,Veterinary Automatic Chemistry Analyzer,Dry Chemistry Analyzer Guangdong Widinlsa International Co.Ltd , https://www.widinlsa.com