Cercospora in Cannabis.

The fungus Cercospora sp. It is one of the most common pathogens that affects most crops in the tropics. High temperatures and high relative humidity, very common in tropical regions, promote the development of this disease known as brown spot in a large number of crops.

In Cannabis crops, the symptoms are the same as in other crops, circular brown spots with concentric rings and the typical yellow halo that surrounds the necrotic tissue. It is more common in greenhouses where temperature and relative humidity conditions are difficult to control. There are many biological, organic or chemical control alternatives, however it is almost impossible to control when environmental conditions are favorable to its development and proliferation.