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How to identify and control purple blotch of onion?
What is purple blotch of onion? How to control it? Please guide on purple blotch of onion: 1. Symptoms Purple blotch mainly affects onions and Welsh onions, and also infects and damages garlic and Chinese chives. On onions it mainly damages leaves, flower stalks and bulbs. The lesions first appear starting from the leaf tip, or form at wounds caused by thrips. Initially...
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What diseases should be prevented and controlled when growing tomatoes in summer?
What diseases should be prevented and controlled when growing tomatoes in summer? Please advise. For reference, the following diseases should be prevented and controlled when growing tomatoes in summer: Viral disease: high temperature and drought are the primary conditions for the disease to occur. The suitable temperature for viral disease is between 38-43°C; below 35°C or above 45°C is not conducive to the disease. In daily cultivation management, ...
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How to control rice planthoppers? A detailed guide to practical methods
How do you control rice planthoppers? Please provide an introduction to control methods. To control rice planthoppers, you can refer to the following methods: 1. Plant at a reasonable density, improve the field microclimate, and increase the rice plant's disease resistance. 2. Fertilize reasonably, control nitrogen fertilizer, increase phosphorus and potassium fertilizer, and apply topdressing skillfully, so that the rice grows and develops early and quickly,...
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What are the control methods for the rice stem borer (Chilo suppressalis)?
How do you control the rice stem borer? Here are the control methods. The rice stem borer, also known as the stem maggot, can damage rice from the tillering stage to the milk-ripening stage, posing a threat to rice production and affecting both yield and quality. Doing a good job of controlling the rice stem borer is of great significance for promoting high rice yields and increasing farmers' income. The control methods are as follows:...
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What are the control methods for bacterial leaf streak of rice?
How do you control bacterial leaf streak of rice? Please provide guidance methods. Symptoms of bacterial leaf streak of rice damage: it can occur from the seedling stage to the ear stage of rice. The lesions are yellow, initially yellow, then turning yellow-brown, until completely rotted. If the disease occurs before the heart leaf emerges, it cannot continue to grow upward and dies within the heart, forming a false dead heart, hence it is also called heart rot disease....
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How should pests and diseases be controlled in the late growth stage of rice?
How should pests and diseases in the late stage of rice be controlled? Please provide guidance methods. Pests and diseases cause serious damage in the late stage of rice. The control methods can refer to the following: 1. Sheath blight: The disease has recently been rising faster. In a general survey of each town on September 10, the average rate of diseased hills was 13.7%, and the rate of diseased plants was 3.3%. The disease situation has clearly accelerated compared with the previous period...
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Control methods for tobacco wildfire disease and angular leaf spot
How to control tobacco wildfire disease and angular leaf spot? Tobacco wildfire disease and angular leaf spot are important diseases of tobacco. The two diseases are very similar in terms of pathogen characteristics, infection patterns and control methods. In the field, these two bacterial diseases often occur together and are relatively common in tobacco-growing areas across the country. Wildfire disease in...
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What are the methods for tea plant pest and disease control?
How to control tea plant pests and diseases? Please guide. The meaning of deep processing of tea: Deep processing of tea refers to using fresh tea leaves or finished tea as raw materials, or using tea, tea factory waste, defective products, or by-products as raw materials, and using corresponding processing techniques and methods to produce tea-containing products. Tea-containing products may be tea-based...
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How to prevent and control kiwifruit chlorosis? These cultivation techniques you need to master
How to prevent and control kiwifruit chlorosis? Please introduce the prevention and control methods. Kiwifruit chlorosis can be prevented and controlled by referring to the following methods: Build the orchard in a suitable location and choose a good site. The soil pH of a production orchard should be between 5.5 and 7.5. The soil should preferably be light loam, medium loam, or well-aerated sandy loam, with organic matter content in the topsoil above 1.5%, and the groundwater level below 1 m. Avoid establishing an orchard on replanted land where perennial trees such as apple, pear, and peach have already been grown, or on heavy clay soil. It should also not be established in areas with a high groundwater level that are prone to waterlogging.
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Bougainvillea not blooming? Be brave enough to pluck the leaves and control these two things well, and it will bloom abundantly
Bougainvillea is a very common flowering plant, and its blooming period is fairly long. As long as its environment is suitable and it is managed properly, it can be said to bloom continuously all year round. This one you see here, a friend is growing it on the rooftop. A while ago the leaves...
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