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Control Methods for Major Pests and Diseases in Chuanxiong (Ligusticum chuanxiong) Cultivation
1. Major diseases and control methods Leaf blight Mostly occurs from May to August. When the disease develops, brown, irregular spots appear on the leaves, then spread to the entire leaf, causing the leaves of the whole plant to wither and die. Control methods In the early stage of the disease, spray 65% zineb 500x solution, or 50% thiram 1000x solution
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Detailed Explanation of Control Methods for Root Rot in Atractylodes macrocephala
Symptoms: The fine roots in the lower part of the diseased plant turn brown and rot, then spread to the upper fleshy rhizome and stem, showing dark brown sunken rotting spots, and the aboveground part begins to wilt. On the cut surface of the rhizome and stem, the vascular bundles show an obvious discoloration ring, and in the later stage the entire rhizome becomes spongy black dry rot, and the plant
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What are the control methods for leaf blight in Atractylodes macrocephala?
Just from the name Atractylodes macrocephala, it is hard for us to know what kind of thing it is. In fact, Atractylodes macrocephala is a kind of traditional Chinese medicine. As we all know, traditional Chinese medicine culture has always been deeply rooted in people's hearts in our country, because traditional Chinese medicine does much less harm to the human body when treating diseases, and traditional Chinese medicine can
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Detailed Explanation of Control Methods for Root Rot in Saposhnikovia divaricata Cultivation
(1) Damage situation and symptoms: Root rot mainly affects the roots of Saposhnikovia divaricata. In the early stage of infection, the fibrous roots become diseased, and the diseased roots turn brown and rot. As the disease progresses, the lesions gradually spread to the stem, the vascular bundles are destroyed, losing their water-transporting function, leading to root-zone rot, and the leaves wilt
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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 of Root-Knot Nematode Disease in Balloon Flower
Along with the adjustment of the industrial structure, the balloon flower planting area in our district has been continuously expanding. However, due to years of continuous cropping, the occurrence of root-knot nematode disease has shown a spreading trend, causing balloon flower to lose its commercial value and reducing economic returns. 1 Disease symptoms After balloon flower is infected by root-knot nematodes, when the disease is mild
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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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