Recently, the reporter visited Heguan Village, Heguan Town, Qingzhou City, Shandong Province, and learned that the eggplant leaves in the shed of the farmer Liu Mingkai had a very serious spot disease. "At the onset of the disease, many chlorotic spots appeared in the leaves, and the neighbors said that they may be caused by nitrogen deficiency. However, the effect was not as good as it was. It was getting worse and worse. The leaves were covered with small spots and were seriously damaged. Falling leaves, you come and see what's wrong?†Master Liu told reporters eagerly.
When the reporter entered the shed, he found that the lesions in the leaves were gray-brown in the middle, and the lesions were reddish-brown at the edge. A few leaf lesions were accompanied by perforations. The most critical point was that most of the leaves had lesions on the edges. In other words, the bacteria invade from the edge of the leaf.
Among all the leaf spot diseases of eggplant, there are only three diseases that are caused by the invasiveness of the bacteria from the edge of the leaf. They are brown roundworm disease, thin ringworm disease, and bacterial brown spot disease. First of all, the most obvious feature of the ringworm disease is that the lesions have very fine and fine ring patterns. The reporter found that the lesions of the eggplant leaves in the shed of Master Liu do not have a ring pattern, so that the disease can be ruled out; Bacterial brown spot disease mainly produces irregular brown spots from the edge of the leaves, and there is a clear yellow halo around the lesions. Both the fruit and the stems are diseased. The lesions on the leaves in the shed of Master Liu are full of large and small spots. The entire leaf, but no yellow halo, only occurs in the leaves, thus eliminating the possibility of bacterial brown spot.
Based on the above analysis, the reporter determined that the diseases of Master Liu's eggplant can only be brown round star disease, and the disease is easy to develop in a warm and humid or low-lying and moist environment. Therefore, the current prevention of brown star disease, first of all, should reduce the humidity inside the greenhouse. Under the premise of guaranteeing the temperature in the shed, as far as possible, the small mouth vents and removes moisture. Reduce flood irrigation, it is recommended to cast a small water ridge under the membrane. When there is sufficient light at noon, the sheds will be shed for 1-2 hours, and the temperature of the shed will increase to lower the humidity. Second, increase the application of phosphorus and potassium fertilizers to improve plant disease resistance. Finally, pharmaceutical control. At the beginning of the disease, 75% of chlorothalonil WP can be sprayed 800 times, or 47% of Garrinone (Spring Thunder King Copper) WP can be used 700 times. When the disease is severe, Prochloraz Manganese Salt can be sprayed. The water agent (xylomethoxine) + chitin is used for prevention and treatment, once every 7 days, for 2-3 consecutive times. Due to the hairiness of the leaves of eggplant, it is recommended that vegetable farmers add silicone additives when spraying to increase the liquidity of the liquid and ensure even spraying.
Mixed Colorants For Beverage is specially used in drinks to enhancing the color in beverage industry. During the usage, Food Coloring don't influence the properties of products. Colour Pigments In Food is easy to use and can be widely applied to many kinds of products. If you want to know more about Mixed Colorants For Beverage, please click the products details to view parameters, pictures and other information.
Mixed Colorants For Beverage
Food Coloring,Colour Pigments In Food,Mixed Colorants For Beverage Product
Guangdong Kelong Biotechnology Co., Ltd. , https://www.kelongfood.com