How to identify rice yellow leaf disease

How to identify rice yellow leaf disease? Please introduce that rice yellow leaf disease can be identified by the following methods: 1 bacterial blight yellow leaf. From the bottom up, the diseased leaves turn yellow to withered and white. After the injury, dark green spots appeared on the tip or edge of the leaf, and then turned into a long yellow stripe to open the disease spot, which was obvious in the diseased part and healthy part, like ripples. In the later stage, there was coccidia gum on the leaf surface. Cut off the leaves, clip them with two pieces of glass, drip water, and smoke-like bacteria gush out. (2) yellow dwarf yellow leaves. The disease occurs from the parietal leaf and its lower 1-2 leaves, extends upward and downward, and then gradually develops to the whole leaf yellowing, or becomes mottled mosaic leaves, the plant dwarf internodes are short, the grass leaves droop and spread, black roots are more, new roots are less, and often yellow and withered to death. 3physiological premature senility and yellow leaves. Spread from the bottom up, most of the diseased leaves showed orange, metallic luster, into a piece or the whole field. There are no plaques or fungal pus on the yellow leaves. 4Fertilizer harms yellow leaves. Improper application of ammonium bicarbonate, ammonia and pesticides will cause poisoning and cause pieces of rice leaves to be smoked bright yellow or golden yellow, sometimes with scorched spots on the yellow leaves. Click to get massive rice planting technology click to get massive grain planting technology