-
Methods and Technical Key Points for the Prevention and Control of Pests and Diseases in Water Chestnut
Methods for the Prevention and Control of Pests and Diseases in Water Chestnut
-
How to prevent and control peanut southern blight? First, recognize the damage symptoms
Peanut southern blight is one of the main diseases harming peanuts. After the roots, pods and stem base of the peanut are affected, they initially become brown and soft-rotted. White silky mycelium appears at the root-stem area of the aboveground part. White silky threads often first form at the stem base near the ground and on the nearby soil surface, and the diseased part gradually turns dark brown and glossy.
-
What are the harmful symptoms of peanut brown spot? Detailed control methods
Peanut brown spot is a fungal disease caused by infection with Cercospora arachidicola of the subphylum Deuteromycotina. It harms peanut leaves, initially appearing as small chlorotic spots, which later expand into nearly round or irregular small spots. The lesions are larger and lighter in color than those of black spot disease, appearing dark brown or tea-brown on the upper leaf surface and brown or yellowish-brown on the underside, with a bright yellow halo around the lesions.
-
Peanut Stem Rot: Damage Symptoms and Control Methods Explained
Peanut stem rot, commonly known as "rotten neck disease," is distributed in all peanut-growing regions across the country. It generally occurs in the middle and late stages. After infection, plants quickly wither and die, and the pods often rot or the kernels fail to fill out, causing serious losses. The disease incidence rate in ordinary fields is 20-30%, and in severe cases reaches 60-70%.
-
What are the symptoms of cucumber powdery mildew? Detailed explanation of control methods
Cucumber powdery mildew is one of the common diseases in cucumber cultivation and occurs all over the country. Because powdery mildew has developed a certain degree of resistance to fungicides in recent years and can occur in all four seasons, control has become somewhat difficult. Therefore, in ordinary years yield loss is about 10%, and in epidemic years yield loss is about 20-40%.
-
What to Do When Cucumbers Get Gray Mold? Symptoms, Damage and Control Methods
Cucumber gray mold is a disease that occurs year-round in protected cucumber cultivation, caused by infection with the fungus Botrytis cinerea of the Deuteromycotina (Fungi Imperfecti). Vegetable growers often call it fruit rot disease or moldy rot disease. In recent years its occurrence has been increasing year by year, and because the fruit is often affected it causes rotting.
-
Harmful symptoms and control methods of cucumber leaf blight
Cucumber leaf blight mainly harms the leaves. Symptoms on young leaves are not obvious. On mature leaves, yellowed areas appear on the leaf surface, along with deformed water-soaked chlorotic spots that gradually enlarge into nearly round or polygonal brown spots, 1-2 mm in diameter, surrounded by a chlorotic halo. On the underside of diseased leaves, small sections of clear veins are very likely to appear in the early morning or on cloudy days.
-
How to prevent and control cucumber phytophthora blight? Recognizing the damage symptoms is key
Cucumber phytophthora blight can infect plants from the seedling stage to the mature plant stage. When seedlings are infected, dark green, water-soaked rot first appears on the tender tips, which gradually dries up and forms bald tips. At the mature plant stage, it mainly damages the base of the stem and the nodes of tender stems, starting as dark green water-soaked areas, then becoming soft and markedly constricted, and the leaves above the affected part gradually wither
-
What are the common avocado diseases? A full analysis of prevention and control methods
Avocado is a deciduous tree distributed across various tropical regions. It contains very rich fats and is a relatively important oil crop, widely used to make butter and soap. In addition to these industrial products, avocado also contains extremely rich nutrients, such as protein and vitamins. It has a series of effects including anti-aging and breast enhancement and beauty, attracting a large number of people to grow it.
-
Identification of 8 Common Cucumber Pests and Diseases and Pesticide Control Methods
Cucumber pest and disease control techniques: introducing the damage characteristics and chemical and biological control methods for downy mildew, powdery mildew, gray mold, anthracnose, angular leaf spot, leafminer, whitefly and melon aphid, to help you apply the right pesticide and grow good cucumbers.
条件筛选