How to control chrysanthemum powdery mildew?
How to control chrysanthemum powdery mildew? Please guide the powdery mildew of chrysanthemum mainly occurs on the upper leaf branches and buds of chrysanthemum. The affected part is covered with a layer of gray-white hyphae, which forms a layer of dirty white powder, causing the leaves to deform and the buds can not open normally, affecting the ornamental. The main causes are overcast and rain, lack of light, poor drainage, high humidity, rapid reproduction of bacteria, causing the epidemic of bacteria. But the disease can also get worse under dry conditions. In addition, excessive nitrogen fertilizer, plant lodging, or insufficient fertilization, weak plant growth and poor disease resistance are easy to cause powdery mildew. Control methods ① to strengthen management: reasonable fertilizer and water, strengthen maintenance, enhance the plant's own disease resistance. ② chemical control: spray 20% trimethoprim EC 800x, or 50% methyl topiramate wettable powder 1000 times, or 50% carbendazim wettable powder 500x. And pay attention to the alternate use of the above agents. As long as the prevention and control is timely, powdery mildew will not cause harm. Click for more chrysanthemum planting techniques click to get more flower planting techniques
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How to control the diseases of chrysanthemum?
How to manage chrysanthemums in August? Chrysanthemum, also known as Nine Flowers and Yellow Flowers, is a perennial herb of the Compositae family. It is a favorite traditional flower of our country. It is also one of the four fresh cut flowers in the world. It is also a commonly used traditional Chinese medicine. It has the effect of clear vision, detoxification, dispelling wind and clearing heat. It is cultivated all over the country. ...
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What should we pay attention to when planting pollution-free tea?
How should early spring tea be managed? Please guide the management methods of early spring tea as follows: first, weeding and loosening the soil: after 4-5 months of rain and snow in the tea garden, the soil has solidified, some have grown grass, and the soil temperature is relatively low at this time. Therefore, weeding and loosening the soil in the tea garden before spring tea mining is beneficial to loosen the soil and improve.
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