Lemongrass leaf blight and its control

Lemongrass leaf blight

When growing lemongrass, you will find that leaf blight occurs frequently and sometimes breaks out very seriously. It is most serious during the hot and rainy season of the year.

When leaf blight occurs in field-grown lemongrass, it is almost 100% affected. Generally, after the leaves are cut, the new leaves of lemongrass are more susceptible to the disease. The longer the time, the greater the damage and the greater the loss caused.

Leaf blight of lemongrass is mainly caused by pathogens. When the disease occurs, it harms the leaves. Purple-brown spots appear on the leaves and gradually expand and develop into light yellow stripes. The leaves will also turn into brown dead leaves and produce black mold.

Prevention and Control of Citronella Leaf Blight

To prevent and control leaf blight in lemongrass, you first need to eliminate the cause of the disease. The disease occurs first because diseased plants are planted, and secondly because the bacteria infect new plants through airborne transmission, diseased leaves, and rainwater, leading to leaf blight of lemongrass. Specifically, this disease is prone to occur in seasons with high temperatures and heavy rains.

In fact, at present, there are no very effective prevention and control measures for lemongrass leaf blight. When dealing with leaf blight, the main focus is on reducing the damage.

Measures that can be taken include disinfecting the seedlings before planting, which can be done by soaking them in Bordeaux solution. The second step is to cut the leaves at shorter intervals, about once every 40 days. After cutting the leaves, you need to spray some Bordeaux solution to protect the wounds. When the disease occurs, you can also spray drugs for treatment. These are some ways to reduce lemongrass leaf blight.