Rose Disease and Pest Control Techniques and Methods
Are you familiar with these? Here are some small experiences in plant cultivation for the prevention and control of rose diseases and pests, let's learn about them together.
Rose Disease and Pest Control Techniques and Methods
Common Diseases in Rose Cultivation
1. Rose powdery mildew: Powdery mildew is a fungal disease that first infects in May, spreads in June and July, and after infection, a white powdery substance covers the leaf surface and tender shoots. In severe cases, the leaves turn yellow and fall off, leading to poor plant growth.
2. Rose black spot: This disease is a fungal disease, the pathogen overwinters in diseased residues, spreads with rain, and insects can also spread it. The optimal temperature for onset is around 26 degrees Celsius. In seasons with heavy rainfall, the disease is severe, with severe damage to the roots and weakened growth being more susceptible.
Main Pests in Rose Cultivation
Rose aphids: Aphids gather to absorb the sap from tender buds, causing leaf and flower bud deformation, affecting the plant's photosynthesis, and their mouthparts piercing the surface of branches and leaves can spread bacteria and viruses, leading to more diseases.
Rose Disease and Pest Control
1. Rose powdery mildew: During the spring growth period, it is necessary to alternately spray Mancozeb, chlorothalonil, carbendazim, and thiophanate-methyl. If powdery mildew occurs, spray methyl thiophanate-methyl, which has good control effects. The plum rain and autumn rain periods are the peak times for the disease, so it is necessary to take drainage measures, maintain good ventilation, and promptly prune diseased plants for incineration.
2. Rose black spot: Always clean up fallen leaves, prune diseased branches and leaves to reduce the source of infection, perform severe pruning on severely diseased plants in winter, control planting density in potted plants, avoid frequent watering, and spray with DuPont Fuxing and Mancozeb, spraying both sides of the leaves.
3. Rose aphids: Aphid control is very simple. You can spray 800 to 1000 times solution of imidacloprid on the surface of the plant, once every 7 days, for 2-3 times.
The above is the complete introduction to the techniques and methods for the prevention and control of rose diseases and pests, for everyone's learning and understanding!