Symptoms: when the disease occurs, there will be uneven dark and light green spots or dry spots on the leaves, which will cause the damaged plants to become small, the edge of the leaves to shrink, and the shape of the leaves to become small. Sometimes the petals will also be affected, resulting in light brown spots, which will cause the flowers to fail to open normally.
Prevention and control: in the selection of breeding, try to choose virus-free ones. If any disease strains are found, they need to be pulled out in time and destroyed together.
Symptoms: at the beginning of the disease, there will be small discolored spots on the leaves. When it is enlarged, it will show brown spots. The edge of the leaves is dark brown, and there are many small black spots in the center. At the later stage, the whole leaf began to turn black and wither.
Prevention and control: it is necessary to remove the diseased leaves in time, and spray them with zineb diluent after infection, which can effectively prevent the spread.
Symptoms: it is mainly harmful to the tender leaves and stems of lilies. When the leaves are unfolded, they will parasitize on them and absorb the juice inside, causing the whole plant to shrink, grow poorly and the flower buds to become deformed. It can also spread viruses, causing plants to infect other diseases.
Prevention and control: remove weeds nearby in winter, spray 40% dimethoate or oxidized dimethoate 1200 times liquid during the hazard period.
