The golden-colored privet is most afraid of these two major diseases and pays attention to prevention and control

The golden leaf Privet has a bright golden yellow leaf color in the growing season, with excellent ornamental effect, so it is widely used in landscaping, but if it is harmed by brown spot disease and coal pollution disease in the growth process of golden leaf Privet, it will greatly affect the ornamental value, and the specific prevention and control methods are as follows!

【1】Golden Leaf Privet Brown Spot Disease:

1. Brown spot disease hazard: brown spot disease is the most serious leaf spot disease of Privet, which is caused by pathogenic fungi. At the beginning of the disease, small brown spots appear on the leaves, surrounded by a purple-red halo, and black mold can be seen on the spots. As the temperature rises, sometimes several spots are connected, and finally the leaves scorch and fall off.

2. The pathogenesis conditions of brown spot disease: the most suitable temperature range for the growth of the pathogen is 25 °C to 30 °C, the spores germinate at a suitable temperature of 18 °C to 27 °C, and the spores can germinate in a few hours under the condition of suitable temperature and humidity. After entering the rainy season, if the plants are densely planted, the ventilation and light transmission are poor, a relatively stable environment of high humidity and suitable temperature is formed between the plants, which is very beneficial to the germination and invasion of the spores of pathogens, and the pathogens can be repeatedly infected, and if they are not taken seriously, the disease may occur in a large area.

3. Prevention and control methods: a large number of leaves fall off during the onset of the disease, which seriously affects the landscape. Before or at the beginning of the occurrence of the disease, it can be controlled by qilin qi protection and plant large spraying.

【2】Golden Leaf Privet Coal Pollution Disease:

1. Hazard characteristics of coal pollution disease: The occurrence of coal pollution disease is mainly induced by the secretions after being harmed by mesosomes. After being harmed, the plant, leaves and branches are covered with black coal dust, the photosynthesis of the leaves is inhibited, and the branches, stems and leaves are all harmful.

2. Prevention and control methods: both diseases and insects should be used for treatment, and when the damage of the shell insects is found, the qilin qifa spraying is used for prevention and control, and then the qilin kejun is used to prevent and control coal pollution disease with the spray of planting dazhuang.