Rose Disease and Pest Control Techniques and Methods
A comprehensive introduction to the small experience of rose disease and pest control techniques and methods, the following editor will answer your questions in detail
Rose Disease and Pest Control Techniques and Methods
If roses have powdery mildew, they can be controlled with myclobutanil 600 times liquid, carbendazim 800 times, etc. Select disease-resistant varieties, do not apply excessive nitrogen fertilizer, and spray curative agents for downy mildew. For leaf spot disease, 50% benalaxyl-methyl 1500-2000 times liquid or 50% tebuconazole emamectin benzoate liquid can be used to control. For pest control, emamectin benzoate, abamectin, acetamiprid, and rui mite net spray can be used.
Common Diseases in Rose Cultivation
1. The harm of powdery mildew: In spring, with abundant rainfall, high humidity, and suitable temperature, it is easy to break out. The leaves are covered with white powder, which is spread by air movement.
2. The harm of downy mildew: It mainly affects leaves, new shoots, stems, pedicels, and petals, first infecting the growing points. The leaves will turn brownish black, develop irregular small spots, and then gradually wither or fall off, and the diseased shoots will dry up.
3. The harm of leaf spot disease: When the disease occurs, the leaves show black spots with radial mycelium around the spots, often occurring in rainy seasons.
Main Pests in Rose Cultivation
1. The harm of the yellow刺蛾: The main larvae feed on the leaf mesophyll, leaving only the main veins, and in severe cases, the whole plant's leaves are eaten, also eating the petals, affecting the normal growth of roses.
2. The harm of the chafer: Mainly apple chafer and black velvety chafer, which eat leaves to form notches or holes.
3. The harm of aphids: Aphids can occur all year round, and they are harmful in dry conditions. They need to be eliminated as soon as they appear, otherwise, it will lead to the withering of leaves.
4. The harm of spider mites: Spider mites absorb chlorophyll from the leaves, affecting the photosynthesis of roses, and spread rapidly. They can quickly cause leaf damage, affecting the normal growth of the plant, often occurring in summer in high temperatures and dry environments.
Rose Disease and Pest Control Techniques and Management Methods
I. Techniques and Management Methods for Rose Disease Control
1. For the control of powdery mildew: Regularly spray with myclobutanil 600 times liquid, carbendazim 800 times, etc., spray once every 7-10 days, and often spray water on the leaves to reduce bacterial transmission. Quickly cut off the diseased branches and leaves to reduce bacterial transmission.
2. For the control of downy mildew: Select disease-resistant varieties and take good care. Do a good job of drainage during the rainy season, pay attention to ventilation, do not apply excessive nitrogen fertilizer, and spray curative agents promptly when the disease first appears.
3. For the control of leaf spot disease: 50% benalaxyl-methyl 1500-2000 times liquid or 50% tebuconazole emamectin benzoate liquid can be used. When selecting pesticides, try to choose high-efficiency, low-toxicity, and low-residue biological pesticides.
II. Techniques and Management Methods for Rose Pest Control
1. For the control of the yellow刺蛾: Common pesticides include cotton boll worm nuclear polyhedrosis virus suspension, emamectin benzoate, or abamectin.
2. For the control of the chafer: Emamectin benzoate, abamectin, and dichlorvos can be used.
3. For the control of aphids: Acetamiprid, pymetrozine, and imidacloprid can be used for control.
4. For the control of mites: Use mite death 600 times liquid spray or rui mite net spray for good results.
The above is the small knowledge of rose disease and pest control techniques and methods. I hope this article can be of some help to you!