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Control Methods for Root Rot in Salvia miltiorrhiza Cultivation
1. Hazard symptoms: Root rot of Salvia miltiorrhiza occurs in hot and rainy seasons and damages the plant roots. In the early stage, only a few roots or part of the underground rhizome are affected first, gradually spreading to the entire root system. After the roots are damaged, wet rot occurs, the outer skin turns black, and the aboveground part develops
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Control Methods for Leaf Spot Disease in Balloon Flower Cultivation
Balloon flower (Platycodon grandiflorus) is a perennial herbaceous medicinal plant, with its roots used as medicine. The control methods for leaf spot disease in balloon flower are as follows: 1. Symptom identification: This type of disease mainly damages the leaves of balloon flower. (1) When infected by the septoria leaf spot pathogen, white circular or nearly circular lesions appear on both sides of the leaves,
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What are the disease prevention and control methods for licorice cultivation?
The main diseases of licorice are: rust, brown spot and powdery mildew. The prevention and control methods are as follows: 1. Rust: when infected, yellowish-brown scar-like lesions appear on the underside of the leaves; after the epidermis ruptures, brown powder is released, which is the uredinium of the pathogen; in August-September, dark brown telia
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What are the control methods for apple fruit cracking disease?
In the late stage of apple growth, fruit cracking disease is common and causes relatively serious damage, severely affecting the commercial value of apples and deserving sufficient attention. Apple fruit cracking disease is caused by slow expansion of fruit flesh cells during the early drought period of apple growth, and rapid cell expansion when rain occurs in the middle and late stages of apple growth
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Control Methods and Technical Key Points for Apple Little Leaf Disease
Apple little leaf disease occurs mostly in orchards with poor soil and good permeability. Because of low zinc content, soluble zinc salts leach away and the disease becomes severe; frequent watering and rainfall cause large losses of soluble zinc; excessive nitrogen fertilizer use increases the tree's zinc requirement; in saline-alkali soil the pH
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What are the control methods for apple silver leaf disease?
Apple silver leaf disease is distributed in all apple-producing areas of China, occurring mainly in the apple-producing areas along the old course of the Yellow River in Jiangsu, Anhui and Henan provinces, and rarely seen in other apple-producing areas. It is a devastating disease that, under suitable conditions, can cause the entire apple tree to die. [Identification
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What are the control methods for apple tree root rot?
Apple trees often suffer from root rot. Because the root system is buried in the soil, when the disease is initially contracted or mild, it is either not discovered or, once discovered, not accurately diagnosed, so the right treatment is not applied. In mild cases this leads to weak tree vigor and reduced yield and quality; in severe cases it causes the death of the plant, or even the loss of the entire orchard.
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Control Methods and Technical Key Points for Mango Powdery Mildew
Mango is prone to powdery mildew during the flowering stage, young fruit stage and tender leaf stage. If not controlled in time, it will cause massive fruit drop and reduce yield. Mango powdery mildew is a fungal disease that mainly affects inflorescences, young fruits and tender leaves. On affected organs, scattered small white moldy patches first appear,
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Control Methods for Mango Flatid Planthopper
The mango flatid planthopper, also called the leafhopper, damages flower spikes and young fruit, causing flower and fruit drop, poor harvest or even total crop failure, and induces severe sooty mold. It also damages young buds, tender shoots and leaves, causing bud and leaf deformity. It usually occurs more frequently during the flowering period, and high humidity and a dense canopy make this insect more likely to appear.
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Control Methods for Scab Disease in Mango Cultivation
1. Symptom characteristics: It mainly damages the fruit, and young new shoots and leaves can also be affected. All affected parts show rough, slightly raised scab spots that are lignified. Small dark brown, slightly raised, lignified spots first appear on the fruit surface; later the lesions become densely packed and merge into patches, with a rough surface and a sunken center.
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