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Control Methods and Technical Key Points for the Buckwheat Hook-wing Moth
The buckwheat hook-wing moth belongs to the order Lepidoptera, family Drepanidae. The adult has a body length of 10-13 mm and a wingspan of 30-36 mm, with 3 outward-curving ">"-shaped yellowish-brown lines on the forewings. The larva has a body length of 20-30 mm; young larvae are green or grayish-brown, gradually turning dark brown as the instar increases, and mature larvae are dirty white. This pest mainly...
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Identification and Control Methods for Pineapple Mealybugs
Pineapple mealybugs belong to the order Homoptera, family Pseudococcidae. Dysmicoccus brevipes is the most commonly seen species. The damage symptoms are caused by adults and nymphs feeding on the sap of pineapple rhizomes, leaves, fruits and seedlings. Affected leaves first show symptoms starting from the lower part, gradually fading upward to yellow and finally turning red-purple; in severe cases all leaves soften and droop...
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Main Disease Control Methods and Technical Key Points for Hami Melon
**The main diseases of Hami melon are Phytophthora rot and downy mildew, and powdery mildew. Bacterial leaf spot, gummy stem blight, viral disease and broomrape. The main control measures and pesticides are as follows: 1. Phytophthora rot (dead vines, wilt, rotten melons) (1) Select disease-resistant varieties (2) Use a middle furrow (15-20cm) with high beds (0....
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How to treat bacterial leaf spot in Hami melon? Detailed guide to chemical control methods
Bacterial leaf spot is a major disease of Hami melon. It can occur in both protected and open-field cultivation. In severely affected fields or greenhouses, the diseased plant rate can reach over 80%, and severely diseased plants die from the disease, significantly affecting production. The symptoms mainly affect the leaves, and in severe cases also infect the stems, vines and fruit. When leaves are infected, initially dark green oil-soaked small spots appear, with...
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Causes of Flower and Pod Drop in Common Beans and Control Methods
There are several causes of flower and pod drop in common beans, along with solutions, for the reference of farmer friends. 1. Variety: Some varieties have poor cold resistance and stress resistance when cultivated in early spring. 2. Climatic effects: There is a lot of cold, overcast weather after the Spring Festival. 3. Cultivation mistakes: (1) Insufficient fertilizer and water supply or excessive watering at the early flowering stage. ...
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Symptom Identification and Control Methods for Kidney Bean Leaf Spot Disease
It mainly affects the leaves. The leaf spots are round or nearly round, mostly occurring at the leaf tip or leaf margin, with brown edges and a light brown to grayish-brown center; when humid, small black dots are scattered or arranged in concentric rings on the spots. Control methods: strengthen management inside the greenhouse (such as frequently applying foliar fertilizer such as Fengshou No. 1), especially controlling air humidity. Then there is chemical control, ...
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Causes and Control Methods of Hollow Main Stems in Broccoli
Broccoli, also known as green cauliflower, is suitable for growing under cool climate conditions. Its produce is tender in texture, unique in flavor and rich in nutrients, especially very high in vitamin C, making it a fashionable high-grade vegetable. Because of the higher altitude in the mountainous areas of Lantian County, the summer climate is cool and humid with few pests and diseases, making it suitable for broccoli growth, especially...
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Symptoms and Control Methods of Fusarium Fruit Rot in Hami Melon
Fusarium fruit rot of Hami melon, also known as white mold disease, is an important disease on Hami melon, mostly occurring during storage and transportation, and Hami melon and honeydew melon are susceptible. The symptoms mainly affect the fruit. Initially, circular slightly sunken light brown lesions appear at the fruit stalk, 10-30mm in size, then the surrounding area becomes water-soaked, and some diseased parts crack slightly, with...
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Symptoms and Control Methods of Root-Knot Nematode Disease in Hami Melon
Root-knot nematode disease is an important disease of Hami melon, occurring and distributed in some areas. It can develop both in protected cultivation and in open fields, with more severe incidence in autumn. Infection at the seedling stage has a great impact on production, and after onset the diseased plant rate often reaches more than 60%, significantly affecting Hami melon production. The symptoms mainly damage the root system, producing on the main root and lateral roots...
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Causes and Control Methods of Off-Color Curds in Broccoli
Broccoli, also known as green cauliflower or broccoli, prefers a cool climate. The summer-sowing cultivation techniques are introduced as follows: 1. Early preparation (1) Variety. Choose hybrid F1 varieties with early maturity, strong stress resistance and the highest yield. The main varieties are Yuguan, Teji Yuguan, Wanlü, etc. (2) Plot. Requires rich organic matter...
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