1. Black spot: it mainly occurs on the leaves. At the beginning of the disease, there are dark brown spots on the edges of the leaves. After that, the spots gradually expand, and the affected plants will also wither and fall off. After the disease, in addition to cutting off the rotten leaves, chlorothalonil should also be sprayed to control the spread of the disease, and carbendazim solution can also be used.
2. Downy mildew: this disease is very harmful to the miniature rose in the greenhouse. It will cause the leaves to fall off quickly, and the pathogen will also infect the branches. In serious cases, it will lead to death. At the beginning of the disease, carbendazim, aluminum phosphate and other chemicals should be sprayed.
3. Powdery mildew: it is harmful to the leaves, pedicels, twigs and other parts, resulting in powdery mildew spots on the damaged parts, which will lead to weak growth, and even the whole plant will die when the disease is serious. It can be sprayed with thiophanate methyl, Triadimefon, carbendazim, etc.
1. Aphid: it mainly stabs into the stem, sucks the juice inside and causes the plant to die. In the early spring, Pymetrozine was selected.
2. Starscream: this insect pest will lie on the leaves, causing damage to the branches and leaves. It can be killed by spraying dicofol.
