Control of lily anthracnose
Symptoms: round yellowish disease spot with dark brown periphery of the disease spot. The disease spot on the petals is round and flaxen. Mainly on the outside of the upper half of the scale, but also on the inner side, irregular and light brown spots were produced at the initial stage, then light dark brown, slightly sunken, and finally the disease was almost black, the tissue shrunk and dry rot, and the disease spot could be as deep as several layers of scales. but the outermost scale suffered the most. The flower buds of the diseased bulbs were aborted, brown to black, or a large number of water-stained small round spots appeared on the flowers, which converged into irregular brown spots, and the tissue collapsed and thinned. Some of the injured pedicels also turned black, and the disease was more serious on oriental lilies.
Pathogens: ColletotrichumliliiPlakidas is a fungal subphylum, Alternaria, Colletotrichum, Colletotrichum. In addition, C.liliacearumFerraris also harms lilies. Soil disease remains carry bacteria.
Disease conditions: damp, freezing and digging injury of bulb are easy to induce disease.
Prevention and control methods:
1. Peel off the diseased scales, select disease-free bulbs, and avoid continuous cropping in the disease area.
2. Do not use too much nitrogen fertilizer, planting should not be too dense.
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Lily field management
Lily field management responsibility editor: managernk Source: Guangdong Academy of Agricultural Sciences Information Institute visits: 171st release time: 2007Universe 281.After winter management lilies were planted from September to October, the bulbs overwintered in the soil and emerged before Qingming Festival the following year. (1) loosen the soil and conserve soil moisture to control weeds. (2) fertilize and cultivate the soil before and after January, pay close attention to the sunny day and spread the border surface with about 1000 kg of pig and sheep ash manure per mu. If conditions are possible,
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Prevention and control of anthracnose of lily
Lily anthracnose harms the leaves, stems and flowers of the plant, causing leaves to fall early, seriously affecting the growth and development of the plant and reducing its ornamental value. Symptoms: in the early stage of the disease, there is an oval spot on the susceptible leaf, the center of the spot is light yellow, the edge is purplish brown or dark brown, and the center of the spot is slightly sunken. The petals are light brown and thin. The diseased pedicel turned black. Susceptible bulbs generally occur on the outer scales and sometimes on the inner scales. Light brown and irregular spots appeared on the scales at the initial stage of the disease, and then the disease spots.
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