Downy mildew is a fungal infestation disease. Rose downy mildew has a rapid onset and is a serious hazard. It is a devastating disease. Major damage to the middle and lower parts of the new branches, leaves. On the back of the initial lower leaves, green spots appeared, and the spots were irregular and covered with a layer of frosty mildew. The later period was dark purple, like water immersion, until it turned brown. The lesions were polygonal and gradually became burning. When the damage was severe, all the leaves fell off and the plants died. Control measures 1. Properly dense planting, the area per square meter should not exceed 12, while the leaves do not have to shoulder each other as well. 2. Reasonable fertilization, balanced nutrition, more organic fertilizer, under the premise of adequate nitrogen fertilizer, enter the reproductive growth phase more application of phosphorus and potassium fertilizer, enhance plant resistance. 3. Clean up the debris and leaves in time and destroy them in a centralized manner. Or in the dormant period sprayed Sundane 2000 times to prevent the bacteria invasion. 4. After the plants become susceptible, use metalaxyl, chlorothalonil, and glucosides alternately. Usually spray 7 days to 10 days, even spray three or four times. Food Additives are substances added to food. Some additives have been used for centuries. With the advent of processed foods in the second half of the twentieth century, many more additives have been introduced, of both natural and artificial origin. Food Additives Food Additives,Natural Food Additives,Food Additives Preservatives SINOCHEM PHARMACEUTICAL CO., LTD , http://www.sinochemnutrition.com
The advantages of food additives are these followed:
1. Improve the appearance of food.
2. Keep and enhance the nutrition value of food.
3. Increase the variety and conveniences of food.
4. Miantain freshness and prolong shelf life.
5. Provide leavening or control acidity and alkalinity.