Beautiful roses need to take good care of rose rust and use them.

Rose has high ornamental value, but while the flowers are beautiful, they also need more care. Rose is actually a relatively weak Xi Shi, easy to catch a variety of diseases, rust is a kind of disease with a high lottery rate. Rust can occur in buds, branches and leaves, buds and other parts, the most serious disease is often leaf buds.

Rose rust is caused by a variety of bacteria, spring and summer is a high-risk period. The disease begins to sprout generally in spring, and when new buds grow in spring, we should pay attention to observation. Rust often starts from infringing on buds. If you look closely, you will find that the surface layer is covered with orange powder, and then the buds become swollen and deformed, and fall off a few days later.

The situation at this time is relatively light, if found in time, the buds are pruned in time, the infection rate can be greatly reduced. If you let it continue, then you will find some orange dots on the front of the leaves, then orange dots on the back, and then white dots on the front leaves.

To fertilize rose, it is recommended to use organic fertilizer, pure plant sugarcane rod fermentation, nitrogen, phosphorus and potassium content is rich and balanced, adding a variety of organic matter, minerals, amino acids, to promote plant growth, strong plant, more flowering.

The main condition for the germination of rust pathogen is that the temperature is suitable + water, and the temperature of about 20 degrees is most beneficial to the reproduction of the pathogen. Therefore, those areas with mild climate and more Rain Water have the highest incidence of rust. Therefore, timely pruning and leaf pruning is beneficial to plant ventilation and leaf drying, and can reduce the reproduction of bacteria.

At the same time, it is necessary to maintain the ventilation and dryness of the rose maintenance environment, and in rainy seasons such as spring, we also need to take shelter from the rain, and pay attention to indoor air circulation when taking shelter from the rain. if it is too muggy, you can use exhaust fans or small fans for ventilation to accelerate air flow.

0.2 stone sulfur mixture can be used to control the disease at the initial stage of the disease, 50% chlorothalonil 600x solution can effectively inhibit the disease before the peak period (especially in the period of high air humidity), or 1000 times solution of 15% powder and trimethoprim can also have a good preventive effect.

In order to improve the resistance of rose, must be given to promote the growth of fertilizer, nitrogen, phosphorus and potassium content is rich and balanced, promote plant rub long, flowering exuberant.

When the disease is more serious, the diseased plant can be sprayed with 1500 times of 25% Fanling, or 50% of dinitrate powder, 3000 times of oxidized Weiling emulsion, 1000 times of methyl topiramate, or 1000 times of 50% Weiling wettable powder, and the spraying frequency is once a week.