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What are the natural enemies of soft-shelled turtles? Detailed explanation of prevention and control methods
The main natural enemies of soft-shelled turtles are rats, snakes, birds, ants, mosquitoes, etc. They mainly harm turtle eggs and juvenile and young turtles under 1 year old; they rarely harm robust turtles over 1 year old. Among them, rats cause the greatest harm to turtle eggs. In the dead of night, which is the good time for soft-shelled turtles to lay eggs, rats also take the opportunity to come out of their holes and move frequently around the egg-laying site. On one hand, they interfere with the turtles' normal egg laying; on the other hand, rats dig holes all over the sand bed, causing the turtle eggs to vibrate and leading to embryo death. Juvenile and young turtles are also easily surrounded and preyed upon by rats. Some adult turtles with poor constitution and
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Symptoms, Identification, and Control Methods of Leek Anthracnose
Anthracnose is an important disease of leek, widely distributed and commonly occurring. It usually occurs very mildly, with no obvious impact on production; only in individual plots or when there is more rain during the growing period does the disease become severe, with 100% of plants infected, and some leaves dying from the disease, significantly affecting yield and quality. [Symptoms] This disease mainly infects leaves and leaf sheaths. Initially, small white spots appear on the surface of leaves or leaf sheaths, which later develop into nearly oval to long spindle-shaped or irregular white necrotic dead spots, with a distinct boundary between diseased and healthy tissue. Finally, black
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How to prevent and control garlic leaf blight? These methods you need to master
Control measures for garlic leaf blight: 1) Promptly remove damaged leaves and flower stalks; 2) Strengthen field management, plant at a reasonable density, drain promptly after rain, and improve the host's disease resistance; 3) Starting at the early stage of the disease, spray 75% chlorothalonil wettable powder at 600 times dilution, or 50% iprodione wettable powder at 1500 times dilution, 64% oxadixyl-mancozeb wettable powder at 500 times dilution, 50% copper sulfate-ammonium salt wettable powder at 500 times dilution, 60% fosetyl-aluminum wettable powder at 500 times dilution, 14% copper ammonia complex aqueous solution at 300 times dilution, 1:1
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What to Do When Garlic Gets Viral Disease? All the Control Methods Are Here
Dai Hongming of Baimi Town, Jiangyan City called on December 1 and said that his 2 mu of garlic was at the 5-6 leaf stage, and recently 50% of the plants in the field had whole leaves turning yellow and deformed and twisted, with white root systems, and no herbicide had been used earlier. He asked what disease the garlic had and how to control it. On December 3, the Agricultural Technology 001 Studio received the diseased garlic seedlings he sent by express mail. Upon careful examination of the diseased seedlings, they were roughly at the 3-5 leaf stage, with intermittent short yellow-green striped spots on the basal 1-2 leaves, and some leaf tips had already
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Control Methods and Key Technical Points for the Peach Fruit Borer in Plum Trees
Symptoms: The hatched larvae bore into the fruit from the base of the fruit stalk, tunnel along the pit into the fruit to feed, and the gum flowing from the bore hole together with the brown frass excreted by the larvae sticks to the fruit surface, causing the tunnel to overflow with frass and making the fruit unfit to eat. Control method: During the peak egg-laying periods of the first and second generations of adults in April to May, when most of the eggs on the fruit turn red, promptly spray 2.5% deltamethrin at 2500 times dilution, 50% phoxim emulsifiable concentrate at 1000 times dilution, or 40% omethoate at 1000 times dilution.
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Rhododendron Bloom Control Techniques and Methods Explained in Detail
Rhododendron, also known as yingshanhong and juanhong, is divided into 4 categories according to flowering period and source of introduction: mao juan, xia juan, dong juan and xi juan, and the flowering period varies with the variety. If its temperature, humidity and other conditions are regulated artificially, the flowering time can be made earlier or later according to personal preference. 1. Forcing early bloom: Rhododendron flower buds generally begin to differentiate in autumn. In the cold winter season, move the rhododendron into a greenhouse for cultivation, maintain a room temperature of 20-25°C, and frequently spray water on the branches with a fine sprayer to keep humidity high
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Identification of Symptoms and Control Methods for Powdery Mildew on Impatiens
Symptoms This disease mainly occurs on the leaves and tender shoots. It generally begins in June, and after July the leaf surface becomes covered with a white powdery layer. Subsequently, small yellow granules form within the white powdery layer, and the color gradually deepens, finally turning dark brown. Transmission route The pathogen overwinters in diseased plant residues and seeds. The following year, when environmental conditions are suitable, the pathogen spreads via wind and rain. August to September is the peak period of the disease. Control methods 1. Do not plant too densely, provide appropriate ventilation, strengthen fertilizer and water management, and enhance the disease resistance of the plants. Remove diseased leaves and diseased plants
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Symptom Identification and Control Methods for Southern Blight in Impatiens
Southern blight in impatiens attacks the roots, stems and fruits of plants, causing damping-off, root rot, basal rot and fruit rot. This disease can also harm plants such as iris, orchids, peonies, peaches and plums. Symptoms: In the early stage of the disease, a brownish-black wet rot appears at the base of infected plants, later followed by white silky mycelium and the formation of sclerotia the size of rapeseeds. In the late stage of the disease, severely infected plants collapse with damping-off. Pathogen: The pathogen is Sclerotium rolfsii Sacc., belonging to the Deuteromycotina
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Symptoms and Control Methods of Alternaria Leaf Spot on Impatiens
[Symptoms]The spots on affected leaves are round to oval, dark brown, slightly zonate, 2-10 mm in diameter, with a slightly darker margin. Some spots may expand and merge into patches, bearing a pale green or olive-black mold-like growth, which consists of the pathogen's conidiophores and conidia. The older leaves in the middle and lower parts of the plant are more susceptible; in severe cases, the diseased leaves shrivel and die. [Pathogen]Alternaria tenuis Nees., belonging to Deuteromycotina, genus Alternaria, a fungal pathogen. Conidiophores are erect, brown,
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Symptoms and Control Methods of Anthracnose in Impatiens
[Distribution] Shanghai, Hangzhou. [Symptoms] Both branches and leaves can be affected, mainly on the branches and leaves. In the early stage of the disease, small withered-yellow or brown spots appear on the leaf surface, then gradually develop into circular to nearly circular spots, light brown to brown, with a darker edge and indistinct concentric rings, and small black dots scattered on the lesions; as the disease progresses, adjacent lesions join to form irregular large spots, causing the leaves to shrivel, wilt, and drop off. In humid weather, pink gelatinous material oozes from the small black dots; it can occur from June to September, and sometimes causes the branches and stems to turn black and rot.
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