Prevention of grape powdery mildew
Powdery mildew is also one of the five most common diseases in the southern region, especially for the majestic leaves and fruit.
Symptoms: fungal diseases, harm young fruit and young shoots, leaves. The affected area is often covered with a layer of white to gray powdery granular mold. When the fruit is damaged, it almost stops growing. The surface of the damaged fruit produces a reticular pattern on the surface of the damaged fruit. The deformity becomes hard and sometimes cracks in the longitudinal direction. When the leaves were damaged, the surface was initially covered with grayish-white powder and granular materials. When the pathogenic bacteria spread to the entire leaf, the leaves became brown and scorch. When the shoots and cobs are damaged, many brown reticular patterns appear on the epidermis. When they are serious, the vines cannot mature.
The law of onset: grape powdery mildew occurs when the mycelium is overwintering within the diseased tissue or under the bud. When spring conditions are appropriate, conidia are produced and transmitted by the wind. After germination, conidia can directly invade epidermal cells of the host tissue and absorb nutrients. Conidial germination suitable temperature is 25-28C, resistant to arid climate, low humidity can also germinate, hot summer cloudy weather conditions the fastest incidence. Shanghai and other Yangtze River Delta regions began to attack in mid-June, and in the period of July-August after the outbreak of Mei, the epidemic period was high, and the hot and humid weather during fruit maturation often caused epidemic spread. After September, the disease gradually stopped.
Prevention:
(l) Clean the orchard, timely collect the diseased body and burn it, reduce the number of overwintering germs.
(2) Pick up the hearts in time and tie the new shoots to maintain the ventilation and light transmission conditions.
(3) At the beginning of germination, spray 3-5 degrees lime sulfur mixture.
(4) At the time of onset, spray 15% wettable powder zirconia powder or water agent 1000 times; 75% chlorothalonil 600-700 times; 0.3 degree lime sulfur; powdery mildew sensitive to sulfur, lime sulfur and sulphur rubber suspension Agent control effect is good.
Symptoms: fungal diseases, harm young fruit and young shoots, leaves. The affected area is often covered with a layer of white to gray powdery granular mold. When the fruit is damaged, it almost stops growing. The surface of the damaged fruit produces a reticular pattern on the surface of the damaged fruit. The deformity becomes hard and sometimes cracks in the longitudinal direction. When the leaves were damaged, the surface was initially covered with grayish-white powder and granular materials. When the pathogenic bacteria spread to the entire leaf, the leaves became brown and scorch. When the shoots and cobs are damaged, many brown reticular patterns appear on the epidermis. When they are serious, the vines cannot mature.
The law of onset: grape powdery mildew occurs when the mycelium is overwintering within the diseased tissue or under the bud. When spring conditions are appropriate, conidia are produced and transmitted by the wind. After germination, conidia can directly invade epidermal cells of the host tissue and absorb nutrients. Conidial germination suitable temperature is 25-28C, resistant to arid climate, low humidity can also germinate, hot summer cloudy weather conditions the fastest incidence. Shanghai and other Yangtze River Delta regions began to attack in mid-June, and in the period of July-August after the outbreak of Mei, the epidemic period was high, and the hot and humid weather during fruit maturation often caused epidemic spread. After September, the disease gradually stopped.
Prevention:
(l) Clean the orchard, timely collect the diseased body and burn it, reduce the number of overwintering germs.
(2) Pick up the hearts in time and tie the new shoots to maintain the ventilation and light transmission conditions.
(3) At the beginning of germination, spray 3-5 degrees lime sulfur mixture.
(4) At the time of onset, spray 15% wettable powder zirconia powder or water agent 1000 times; 75% chlorothalonil 600-700 times; 0.3 degree lime sulfur; powdery mildew sensitive to sulfur, lime sulfur and sulphur rubber suspension Agent control effect is good.
There are different packagings cans, sachet and drum. We can meet your needs for processing and production. For Drum Tomato Paste, it is in 220L aseptic bag in steel drum. you can choose different specifications 28-30%, 30-32%, 36-38%, etc. Welcome you to make inquiries to our factory, I hope we can set up long-term cooperation!
Drum Tomato Paste
Drum Tomato Paste,Wholesale Tomato Paste,Fresh Tomato Paste,Bulk Tomato Paste,36-38 Tomato Paste in Barrel,Cold Break and Hot Break Tomato Paste
Hebei Tomato Industry Co., Ltd. , http://www.hebeitomato.com