Pear brown spot is one of the common diseases of pear trees. ?
Mingtai petal model series Surgical Light use advanced technology, with unique performance and advantages, which can meet the various surgical lighting
Surgery light`s symmetry can have a prefect control to shadow, no matter where the operation position is. It owns t o the overlapping light technology
Mingtai LED bulb 40 times long lifetime halogen bulb, reaching 60,000 H, don`t need change bulb frequently.
The light is visible light, no infrared and ultraviolet, less heat
Less temperature rising in the surgical field, average irradiance is 3.8mw/m2, advanced level in the world
For more information about Operating Light, Operating Table, Hospital Bed and Medical Pendant please visit website.
Petal Type LED Operation Lamp,Led Operating Light,Led Shadowless Light,Operation Theatre Light Shandong Mingtai Medical Equipment Group Co., Ltd , https://www.mingtaic.com
Symptoms only harm the leaves, initially appear as round or near-circular brown lesions on the leaves, and gradually expand afterwards. Severely diseased leaves often have dozens of lesions. Afterwards, they have healed irregularly-shaped large brown patches. The lesions are brown in the early stages and fade away in the middle. The lesions had dense black dots, a brown middle layer, and a black outer layer. ?
The characteristics of the disease? The pathogenic bacteria in the conidia and ascaria shell in the deciduous lesions on the winter. In the spring of the second year, conidia or ascospores are disseminated through wind and rain, and the spores adhere to the new leaves. When the environmental conditions are suitable, they invade and invade the leaves, causing initial infection. During the growth period of pear trees, conidiospores can be formed on the lesions, in which mature conidia can be propagated through wind and rain and again invade the leaves. Therefore, in the entire growing season, the disease has many infections, one after another causing the leaves to develop bo?
From May to July, the weather is rainy, wet, and heavy. An orchard with poor tree vigor and poor drainage has many diseases. Diseases generally begin in mid-April, and occur in mid-May and late May. Severe onset, began falling leaves in late May, the most serious fallen leaves in the middle and late July.
Control methods
?? 1 clean garden work to clear the fallen leaves in winter, concentrated burning, or buried in the soil, because the bacteria mainly in the winter on the leaves, so clear the leaves in the park to eliminate pathogens, control of brown spot is important and easy.
2. Strengthen the management of pear orchard After the high yield of pear trees, fertilization should be added to promote the tree vigor to grow robustly and increase the resistance to disease. After the rain, pay attention to the drainage in the garden to reduce the humidity of the park, which is not conducive to the development of the disease.
3. Spray protection in early spring Before the pears germinate, about the middle and late March, combined with pear rust prevention and control, spray 0.6% lime double Bordeaux mixture. After the flower was dropped, when the disease started, the second medicine was sprayed in about the middle or late April. The medicine and concentration were the same as above. In the rainy weather, which is conducive to the occurrence of diseases, it is possible to spray 0.6% Bordeaux once in mid-May. Control brown spot, generally spray 2 or 3 times, that can achieve a good control effect, which focuses on the spray after the flower once. 
Pear brown spot