Aster pest control method

Aster Pest Control Method:

Asters are prone to several common diseases, including leaf spot, downy mildew, and powdery mildew. To manage these issues, you can spray a 10% solution of antibacterial agent 401 acetic acid diluted 1000 times. For mites and thrips, use a 10% emulsifiable concentrate diluted 3000 times and apply it as a foliar spray. For spot blotch, which affects the leaves, it's recommended to use a 1:1:120 Bordeaux mixture before and during the early stages of the disease. Apply this solution every 7 to 10 days for several consecutive applications to control the spread.

Black Spot: Black spot is a fungal disease that affects both the leaves and petioles of aster plants. It causes dark brown, round or oval lesions on the upper and lower surfaces of the leaves, typically ranging from 5 to 25 mm in diameter. These lesions are slightly raised with clear edges. On the petioles, the spots are elongated and dark brown in color. As the disease progresses, black mold appears on the affected areas, which consists of the fungus’s spores and stalks. When the lesions merge over time, they can cause partial or complete leaf death. This disease is more prevalent in warm and humid conditions, usually occurring between May and October.

Control Methods:

1. After harvest, clean up the field thoroughly and burn any infected plant material. Improve cultivation practices by ensuring proper drainage after rain to reduce moisture levels in the soil.

2. In the early stages of infection, apply a 50% solution of chlorothalonil diluted 800 times, or a 50% mancozeb solution diluted 600 times, or a 50% iprodione solution diluted 500 times. Spray the plants once every 7 to 10 days for 2 to 3 applications to effectively manage the disease.

By following these preventive and treatment measures, you can significantly reduce the risk of disease and maintain healthy aster plants throughout the growing season.

Escalator Components

Escalator Components