-
What are the control methods for tobacco mosaic virus disease?
How to control tobacco mosaic virus disease? Tobacco mosaic virus disease occurs commonly in all tobacco-growing areas of our province and is one of the three major tobacco diseases. When it occurs in seedlings or in the early field stage, it can reduce yield by 30%, and economic losses can reach 50%-70%; when it occurs after topping, it has little effect on yield but a relatively large effect on quality. The disease is caused by multiple viruses...
-
What are the control methods for tobacco cucumber mosaic virus disease?
How do you control tobacco cucumber mosaic virus disease? Cucumber mosaic virus disease is the most common and most widely epidemic disease among tobacco viral diseases. The virus is mainly spread by aphids and becomes epidemic as aphids migrate. This disease generally occurs during the seedling revival and rosette stage after tobacco seedlings are transplanted, and often causes plant growth and development to stall, affecting yield....
-
What Is Astragalus Powdery Mildew? Detailed Guide to Symptom Identification and Control Methods
What is Astragalus powdery mildew? How to control it? Astragalus powdery mildew 1. Disease symptoms: Powdery mildew mainly damages Astragalus leaves. In the early stage, white powdery spots appear on both sides of the leaves, and in severe cases the entire leaf is covered with a layer of white powder, with white powder also present on petioles and stems. Affected plants often drop their leaves early, and yield is damaged. Onset...
-
How to prevent and control powdery mildew in Astragalus membranaceus? A complete guide to control methods
How to prevent and control powdery mildew in Astragalus membranaceus? Please note that Astragalus membranaceus is a wild or cultivated species, and throughout its entire growth period it suffers quite severe damage from powdery mildew, which directly affects yield and quality. 1. Symptoms: Powdery mildew in Astragalus membranaceus not only damages leaves but also damages flower stamens, pods, stems and other parts. In the early stage of powdery mildew in Astragalus membranaceus, the leaves...
-
What are the control methods for powdery mildew on Astragalus membranaceus? Explained clearly in one article
What are the control methods for powdery mildew on Astragalus membranaceus? Please introduce. The control methods for powdery mildew on Astragalus membranaceus can refer to the following: 1. Strengthen field management. Reasonable close planting, pay attention to ventilation and light transmission between plants, can reduce the incidence of disease; fertilization is mainly organic fertilizer. Pay attention to the proper ratio of nitrogen, phosphorus and potassium fertilizers, do not apply too much nitrogen fertilizer, so as to avoid excessive vegetative growth of plants...
-
Identification of Damage Symptoms and Control Methods of Tobacco Mosaic Disease
Tobacco mosaic disease occurs commonly in tobacco-growing regions throughout the world, and is found in both northern and southern tobacco regions of China, with the southern tobacco regions suffering more severe damage. It can develop from the seedling stage through to the harvest stage. The incidence rate of affected plants in the field is generally 5-20%, and in individual plots it can reach as high as 90-100%. Losses from early infection can reach 50-70%, or even result in total crop failure.
-
How to prevent spawn degeneration in button mushrooms? Practical prevention and control methods shared
How to prevent spawn degeneration in button mushrooms? Please provide methods to prevent spawn degeneration in button mushrooms. It can increase yield, reduce the occurrence and development of pests and diseases, and reduce pesticide use. It is the foundation of organic button mushroom production. The following methods can be used for prevention: 1. The ambient temperature for culturing spawn must not exceed 2...
-
What are the control methods for yellow blotch disease in button mushrooms?
How do you control yellow blotch disease in button mushrooms? Please explain the methods. In the early stage of infection by yellow blotch disease in button mushrooms, small spot-like pale yellow diseased areas appear on the cap. As the fruiting body grows, the areas expand and infect other fruiting bodies, after which the color darkens and the areas spread to the entire cap. In the late stage of infection, the mushroom body secretes yellow-brown water droplets...
-
What are the weed control methods for sesame during the seedling stage in summer?
How do you control weeds during the sesame seedling stage in summer? Here is an introduction. For weed control during the sesame seedling stage in summer, you can refer to the following methods: 1. Soil closure treatment after sowing and before emergence. After sowing sesame, apply 100 ml of 50% acetochlor emulsifiable concentrate or 200 ml of Dual (72% metolachlor emulsifiable concentrate) per mu, add 50 kg of water, and spray evenly. This can control foxtail grass, crabgrass, shortawn foxtail, goosegrass and many other annual grass weeds, and also has a certain effect on many broadleaf weeds propagated by small seeds. Keep the soil moist after application, and do not cultivate or loosen the soil within 50 days to avoid damaging the herbicide layer.
-
What are the control methods for the sorghum head borer?
How do you control the sorghum head borer? Please provide methods. The sorghum head borer mainly damages sorghum spikelets and grains. Loose-panicle varieties suffer less damage, while tight-panicle varieties suffer more serious damage. Adults lay eggs on the panicle, and after hatching the larvae feed on the grains during the filling stage, causing heavy grain losses. Damage is severe in high-temperature and high-humidity weather...
条件筛选