Led Backlit Ceiling Panel Light
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Planting cantaloupe in the greenhouse
Cantaloupe blight is a common and serious disease that occurs in greenhouse-grown melons, especially when the stem is severely affected. The infected area typically forms a circular lesion around the stem, leading to wilting and the appearance of ulcers at the wound site. This condition is known as bacterial wilt, and it can occur in all regions where cantaloupe is cultivated. It's one of the most significant threats to production, so timely application of **pesticides** is essential.
The symptoms of this disease are quite distinct. In some cases, it’s also referred to as black rot, and up to 30–50% of plants may be affected. The disease primarily targets the main and side vines of the plant. In the early stages, the infection appears as a pale yellow-green oily patch on the vine. A red exudate may develop at the site, which dries into a dark brown mass. As the disease progresses, the lesions become dry and sunken, with a light color that makes them brittle. Small black spots often appear on the surface—these are the spores of the pathogen.
According to the **Chinese Pesticide Network**, after three to four days of infection, the lesion begins to encircle the stem. By the seventh day, spores start to form, and by day 14, the disease becomes severe, eventually causing the plant to die. When fruits are infected, the symptoms usually appear near the ground. The lesions are round, about 1.5 to 2 cm in diameter, and initially look like oil stains. They start as light brown, slightly sunken areas that gradually turn pale. Black spots emerge on the lesions, along with irregular cracks. High humidity can cause the lesions to expand and develop water rot, allowing the pathogen to penetrate deeper into the fruit. A white velvety layer of hyphae may appear on the surface, followed by black granules after a few days. During rainy or cloudy weather, you might even see tiny black particles or pink spore masses emerging from the lesions.
To effectively prevent and control cantaloupe blight, several practices are recommended. First, select disease-resistant varieties based on local conditions. Second, use raised beds with mulch film to reduce moisture after rain, and ensure proper drainage by keeping ditches clear. Apply sufficient organic fertilizer that has been fully decomposed, and use phosphate and potassium fertilizers appropriately. During the mid to late growth stages, apply top-dressing at the right time to avoid over-fertilization. Third, use chemical pesticides as needed. According to the **Pesticide Network**, it's advisable to grow seedlings in soil nutrition bags and transplant them in the same bag. A recommended mix includes 45% triadimefon thiram or 40% triadimefon wettable powder mixed with fertile soil. These methods help create a healthier growing environment and reduce the risk of disease outbreaks.