How to prevent Gladiolus struma
Symptoms The susceptible plants initially formed chlorotic spots on the leaves. The spots were surrounded by veins and were polygonal, the plants became shorter, the leaves were crumpled and twisted, and the flowers became smaller. On the pink flower cultivars, the petals were crushed.
The pathogen and pathogenicity rule is bean yellow mosaic virus (Bean yellow mosaic virus). The wintering of the virus in diseased bulbs and diseased plants makes it the source of initial infection in the following year. The virus is transmitted by sap and locusts. The use of poisonous balls as propagation material also allows the virus to spread widely. Viruses invade from micro-wounds.
Control methods
1. To strengthen quarantine, if any virus is introduced into the bulb, it should be destroyed immediately.
2, the establishment of non-toxic good breeding ball breeding base.
3, pest control disease, with 40% omethoate 2000 times control aphids, timely removal of field disease, to prevent mutual infection.
4, choose more resistant varieties to cultivate.
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