Gladiolus diseases and prevention methods

Gladiolus mosaic disease

symptom

Mosaic disease mainly infects leaves and flowers. In the early stage of the disease, chlorotic spots appear on the leaves. As the spots expand and deepen, they gradually turn brown. The leaves turn yellow and become twisted and deformed. It is difficult for diseased plants to produce flower spikes and bloom. Mosaic symptoms are more obvious in summer.

Prevention and treatment methods

Strengthen prevention and disinfect the bulbs and soil before planting them to ensure that they are free of pathogens before planting.

For diseased plants, the bulbs should be removed and discarded immediately to avoid infecting other plants.

When the disease occurs, spray carbendazim, irrigate the roots or spray on the leaves once every 7 days, 3 to 4 times will be enough.

Gladiolus Dry Rot

symptom

It mainly harms the bulbs, leaves, flowers and roots of the plant. When the disease occurs, the tips of the outer leaves begin to turn yellow first, then spread to the inner leaves, and finally wither.

Prevention and treatment methods

When applying fertilizer, pay attention to controlling the content of nitrogen fertilizer and apply more phosphorus and potassium fertilizer to enhance the disease resistance of the plant.

Soaking the bulbs in a solution of carbendazim for 30 minutes before planting can effectively prevent the bulbs from becoming diseased.

When the plant is sick, spray 50% mancozeb solution in time, once every 7 days, 3 to 5 times will be enough.

Gladiolus scab

symptom

It mainly harms the bulbs and sometimes the leaves. When the bulb is infected, it will produce water-soaked circular spots, the color of which gradually deepens from gray to dark brown. The edges of the spots are protruding and the middle is sunken. When the leaves are infected, water-soaked soft rot will occur.

Prevention and treatment methods

This disease can only be prevented and there is no specific medicine.

Ensure that the planting environment is clean and sanitary and ventilated in time. Spray fungicide once every day to reduce the occurrence of diseases and pests. Replace the soil with new disinfected soil once a year to avoid bacteria growing in the soil.