Symptoms: mainly due to the diseases caused by fungi, generally from the surface of the soil to the root, causing the surface of the affected parts to sink badly, showing reddish brown, which will cause a large number of deaths in a serious period, and the problem is relatively serious.
Prevention and control: before planting, do a good job in prevention, pay attention to soil disinfection and sterilization, which can remove the bacteria in the soil and reduce the possibility of occurrence. The bulbs can also be soaked and sterilized, and then seeded and planted 10 minutes later.
Symptoms: the root is the place where Gladiolus is prone to disease. It is easy to appear in the storage process. At the beginning, light brown spots appear on the bulb. The bulb part shrinks and becomes dry and hard, and then the leaves turn yellow, unable to blossom.
Prevention and control: remove the outer skin membrane, soak it in clear water for more than ten minutes, and then soak it in formalin solution for disinfection and sterilization, so as to remove the bacteria, and then wash it again, dry it and plant it. It should also be noted that in the process of storage, ventilation and drying are needed to greatly reduce the possibility of occurrence.
Symptoms: it is mainly harmful to the root, which will cause the whole plant to wither and die.
Prevention and control: if you find the damage of wireworm, you should dig out the seed ball immediately, and then disinfect the soil.
