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How to Grow Chinese Roses? Detailed Guide to Cultivation Methods and Precautions
Chinese Rose Cultivation Methods and Precautions
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Symptoms and Control Methods of Botrytis Blight in Primroses
Botrytis blight is a common and widespread disease of primroses. [Pathogen] Botrytis cinerea Pers. et Fr. [Symptoms] Water-soaked spots appear at leaf tips or leaf margins, then gradually enlarge, turn brown to black, and rot; stems develop irregular brown lesions and are prone to soft rot; flowers turn brown, rot, and drop off. In the late stage of the disease, a grayish-brown mold layer forms on the affected parts. [Disease cycle] The pathogen overwinters in diseased plant residues or in the soil. Conidia are spread by wind and rain
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What are the control methods for leaf spot disease in primroses?
Control of leaf spot disease in primroses: 1. Select and breed disease-resistant varieties. 2. Strengthen fertilizer and water management, apply more organic fertilizer and phosphorus-potassium fertilizer, and avoid over-applying or applying excessive nitrogen fertilizer alone. 3. After the disease first appears at the seedling stage, begin spraying 70% thiophanate-methyl wettable powder at 1000 times dilution plus 75% chlorothalonil wettable powder at 1000 times dilution, or 50% sulfur mixture suspension or 36% thiophanate-methyl suspension at 500 to 600 times dilution, or 1:1:100 Bordeaux mixture.
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Detailed Explanation of High-Yield Cultivation Techniques for 'Mo Hong' Edible Roses
Edible roses have a certain ornamental value, and their fragrance fills the air; their unique aromatic flavor and excellent taste make them loved by people from all walks of life, and they are widely used in the food industry, daily cosmetics, etc. The rose series and sugar-free rose jam developed by the Food Research Institute of the Yunnan Academy of Agricultural Sciences have aroused great interest and attention from developers,...
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