Prevention and treatment of lily blight
Day lily, also known as day lily, is a perennial herb of the genus Liliaceae. Its edible part is a bud that has not been placed on its own, and is rich in nutrition. It is one of the traditional specialty vegetables. Control methods: Reasonable fertilization, timely drainage after rain, prevent the accumulation of water in the field or excessive humidity on the surface. Chemical control, in the early stage of disease, use 50% carbendazim WP 600-800 times, spray once every 7-10 days, even spray 2-3 times. Ye Xie harms the heavy land, and can be sprayed with an agent that kills the earthworm.
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Leaf blight mainly damages leaves and flower buds. Leaf disease, mostly in the tip or leaf edge of water-stained brown dots, followed by the veins spread up and down, the formation of brown streak, the edge of auburn, the central dark brown, dense black spots, severe when the whole leaf withered. Infestation of flowers, many lesions occur at about 35 cm from the ground, initially as water-stained dots, and after browning to dark brown oval or oblong spots, the edges of the lesions are dark brown, and the lesions are dense black spots. In severe cases, flower buds turn yellow and die. The pathogenic bacteria used mycelium or conidium discs to survive overwhelmingly on the sickness and spread by wind and rain; the fields generally began to develop in late April, and the onset of 5-6 disease was accelerated, and the incidence of rain and high humidity was severe. In addition, the disease caused by the damage of grasshoppers is also heavy.