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There is a yellow spot on the garlic leaf, which is a garlic macular disease. Garlic macular disease belongs to fungal diseases, it is called jaundice of the folk macular disease, garlic rust, can infect garlic leaves and garlic, garlic macular disease generally occurs in garlic, middle and late garlic The middle and late stages of garlic are the critical period for the formation of production, so the degree of macular disease is precise, resulting in 10 reduced garlic production. In general, the most common garlic yellow spot disease has garlic rust, garlic disease and mechanical damage to garlic during harvest, which produces spots after harvest.
1.Garlic rust, garlic rust, generally occurs in the middle and late stages of garlic, one of the common diseases of garlic. In the early stages of the onset, the blade appears green, irregularly shaped.
A pile of spores slightly raised under the garlic epidermis, the epidermis is close to yellow in appearance, the epidermis is broken, and there is an orange-yellow powder.
After the crack spots surround the halo, it is close to yellow. Bacterial spores can spread by the wind, the spots are quickly infected throughout the blade, garlic and moss, garlic garlic is sick, and the value of the commodity is serious. Severe spots can cover the entire blade, the leaves lose photosynthesis, and the garlic is not ripe.
The garlic rust of the large waterfall is particularly fast.
2. Garlic leaf disease is also known as garlic virus disease, the first infection with garlic virus is the main infection, if the sick garlic remains, the second year continues to expand from the outside of the virus, increasing the infection. Garlic flower disease often occurs in years of drought, one of the common diseases of garlic, can cause garlic mosaic disease, causing garlic plants, malignant plants, twisted, garlic, and have a great impact on production.
After the onset of the disease, the garlic leaves cannot be stretched, the area of the blade is reduced, the patient's garlic must be small, the garlic crime is ordinary garlic, the garlic is usually invisible, the garlic has degenerated. The yield and quality of garlic is becoming less and less and has a great impact.
3. The peeled garlic petals have a yellow plaque, so the plaque garlic is not easy to find, mainly due to mechanical damage, carelessness when harvesting garlic, caused by occlusion, and yellow spots appear after drying. When harvesting and drying garlic, you need to be careful not to act rudely.
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Garlic jaundice, also known as garlic rust, is easy to develop in low-lying fields with poor moisturizing and drainage. When the temperature is high in spring, the growth of garlic accelerates, and suddenly encounters cold air, resulting in the appearance of cold spring, low temperature will cause the new leaves of garlic to be frost damaged, and the overall ability of garlic to resist diseases will be weakened. Garlic jaundice generally occurs in March to May, and fluctuating temperatures are the main triggers.
In the early stages of the disease, irregular white spots appear on the leaves of garlic. As the disease progresses, the irregular white spots become yellow halos, and a yellowish powder appears after the lesions rupture. This is the infectious spores of garlic jaundice bacteria, the spores can be fluttering in the wind to endanger healthy plants, serious garlic plants, the leaves are connected with patches, and the whole garlic plant withers and dies in advance.
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It is likely that the climate and sunlight are not particularly sufficient, or because of the lack of water and fertilizer management, or because of the lack of pest control. It definitely has something to do with the local climate.
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Because of some humidity problems, but also it may be due to the influence of some pests and diseases, these can be the cause of the occurrence, you can have something to do with the local climate.
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