(1) Damage symptoms mainly damage the leaves. In the early stage of disease, large water-soaked spots appeared, and then gradually dried out. However, there was a light green water-stained halo around the lesion with a lesion diameter of 15 to 20 mm. The middle lesion was thin papery, pale yellow, and easily broken. Only a few obvious black spots can be seen on the lesions.
(2) Pathogens and pathogenic conditions belong to fungi of the subphylum Subgenus. The optimum temperature for onset is 25 to 28°C, and the relative humidity above 85% is highly susceptible to onset, and it is more prone to develop later.
(3) Prevention and cure method 1 Rotation of more than 2 years is carried out, with the addition of high-quality farmyard manure and scientific fertilization.
2 Spray the leaves with Huimanfeng, Green Wind 95, etc. to increase the disease resistance of the plants.
3 Implement scientific watering and ventilation measures to reduce the air humidity in the greenhouse.
4 At the beginning of the disease, spray 75% chlorothalonil wettable powder 600 times, or 70% mancozeb wettable powder 500 times, or 64% antivirus WP 500 times, or 50% benomyl may Wet powder 1500 times.
(2) Pathogens and pathogenic conditions belong to fungi of the subphylum Subgenus. The optimum temperature for onset is 25 to 28°C, and the relative humidity above 85% is highly susceptible to onset, and it is more prone to develop later.
(3) Prevention and cure method 1 Rotation of more than 2 years is carried out, with the addition of high-quality farmyard manure and scientific fertilization.
2 Spray the leaves with Huimanfeng, Green Wind 95, etc. to increase the disease resistance of the plants.
3 Implement scientific watering and ventilation measures to reduce the air humidity in the greenhouse.
4 At the beginning of the disease, spray 75% chlorothalonil wettable powder 600 times, or 70% mancozeb wettable powder 500 times, or 64% antivirus WP 500 times, or 50% benomyl may Wet powder 1500 times.
Fresh golden crown pears ripen from July to August and are refrigerated from November to may next year.The pear is delicious, crisp and juicy, sweet and sour, and fragrant.Rich in sugar, protein, fat, carbohydrate and a variety of vitamins, to human health has an important role.Pears have the function of clearing the lung and nourishing the lung.Golden crown pears are very delicious and we offer the best quality for our customers. Please let us know if you need any.
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Jining Sunagro Trade Co., Ltd. , http://www.sunagro-food.com