As the temperature gradually drops and foggy weather becomes more frequent, sharp pepper disease has become increasingly common in greenhouses. Recently, many vegetable growers have reported various issues when cultivating hot peppers. Some of the recurring problems with hot peppers are now summarized for reference by farmers.
One issue reported by a farmer from Wutai Town, Shouguang City, is that the heart of the pepper shrivels and dries up. The farmer is concerned whether this is a viral infection. When the center of the pepper becomes dry and shrunk, it may indicate a viral disease. Viral infections can cause a range of symptoms, such as mosaic leaves, fern-like leaves, bright veins, stunting, yellowing, necrosis, and top drying. Among these, the fern leaf virus can lead to the shrinkage of the pepper's heart. Affected plants often show overall stunting, increased branching, and plexiform growth. The mesophyll tissue in the center of the plant degenerates, leading to smaller or fern-like leaves and distortion in later stages. If the symptoms match this description, it is likely a viral infection. To manage it, farmers can spray 120% Virus A wettable powder diluted 500 times, 500 times diluted Virus Net or Virus Spirit, 1.5% Phytopathogenic Ling emulsion at 1000 times dilution, or Anti-toxic Agent No. 1 at 400 times. Apply once every 10 days for three consecutive applications.
Another possible cause is aphid damage. Aphids can cause the heart and leaves to shrink, resulting in dark green, thick, and brittle leaves with a shiny back. Severe infestations may lead to curled leaves. Under a magnifying glass or microscope, aphids can be clearly seen. Control measures include using insecticides like Detritus, Avermectin, or Efford 1.
Liu Mingjie, a senior expert from the Vegetable Society of Shouguang City, also pointed out that chemical phytotoxicity can cause similar symptoms. There are two types: hormonal intoxication due to improper hormone use, and direct phytotoxicity from over-concentrated sprays. Hormonal intoxication typically affects young leaves near the growing point, causing twisted veins, thick and stiff leaves, darkening, and rolled edges. These symptoms appear around the fruit area. According to Liu, this is usually caused by excessive hormone accumulation at the top of the plant. To prevent this, hormone use should be strictly controlled. It’s better to avoid hormone-containing products. If necessary, spraying Harvest No. 800 (hormone-free) can help control growth without causing harm.
Direct phytotoxicity can occur when using certain fungicides like Metalaxyl-MnZn, Glucosyl, or Mancozeb. Farmers sometimes apply strong chemicals even for mild cases, which can cause damage to young leaves. This leads to shrinking and curling of the heart and leaves. If phytotoxicity occurs, spraying Harvest No. 800 or using other protective agents like "More Love" can help reduce plant damage.
In one case, a farmer in Shengcheng Town showed bell peppers with brown stripes on the fruit but no changes in the flesh. Experts diagnosed this as the Round Pepper Spot Virus, commonly known as the Yellow Shooter. Although the leaves don’t show adverse symptoms, the fruit develops brown strips or yellow-brown spots. This type of viral disease spreads through insect-infested wounds or friction. Prevention is key—remove and destroy infected plants, and implement the following measures:
1. Pest control: Use Imidacloprid, Net, or Aketai for foliar spraying every 7-10 days. Install insect nets at vents to reduce pest damage.
2. Nutrient spraying: Mix Harvest No. 800 with 0.1% zinc sulfate and spray every 7 days to strengthen plant resistance.
3. Antiviral agents: Spray bactericidal agents, virus-clearing solutions, or antitoxins to prevent or reduce viral infections.
Another issue involves short seedlings. A farmer from Wenjiao Street mentioned that his pepper seedlings are not growing well. While the seeds themselves are fine, the problem lies in the nursery environment. Seedlings are grown in arch sheds, and initial temperatures are maintained. However, after emergence, temperatures drop, and if insulation is inadequate, the seedlings may grow slowly. To address this, farmers should improve insulation by covering with straw or small sheds, ensuring proper warmth for healthy growth. Regular spraying of Harvest No. 800 can also enhance cold resistance and promote strong seedling development.
Knob Switch
The classification mainly includes the aluminum or zinc alloy die casting Machinery Parts using in Knob area.
In the die casting process,higher specific pressure is required, so that higher filling speed can be obtained.which is beneficial for alloy to overcome mold filling resistance.and effectively fill each part of the cavity.The Casting General Tolerance is Grade GB-CT4.
Process Technology: High pressure die casting,NC Machining,Spray Coating
Product Dimensions: Customized
Casting General Tolerance: Grade GB-CT4
Flow Processes: Die casting,Degating,Polishing,Deburring,CNC Turning,Cleaning,Packaging,Storaging,Shipping
Control Measure: Incoming Material Test, First Article inspection,Routing inspection,Final item inspection,and Outgoing quality control
Inspection Equipment: CMM, Caliper, Plug Gage, Screw Gauge,spectrometer, roughness meter, hardness meter, measuring projector, tensile test machine, pneumatic measuring tool, self-design leak test machine
Application: Hardware Parts
Certificate: IATF16949:2016,ISO14001:2015,ISO45001:2018
Lead Time: 30-35 days
Trade Term: FOB Ningbo
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