Prevention against end-of-harvest contagion

prevention against end of harvest contagion 6

Tips for Avoiding Cannabis Blight Contamination

The "Blight" or "Fire Blight" (rust-type mold, blight) of cannabis, most often arrives a few weeks before harvest. Signs of scorch can be seen on the tips of the leaves include leaf tips. Dark and mottled spots on the foliage, slow growth, sudden yellowing and wilting, then death ... Mold spreads quickly to all green plants if the "contagion" is not treated quickly


The "Blight"

 P. syringae is a bacterium of the genus Pseudomonas which is a complex of more than 60 species. Some strains of Pseudomonas are symbionts of plants and soil microflora, but under certain conditions some Pseudomonas are fatal pathogens for animals and humans. With an outer membrane resistant to ultraviolet rays and oxidants, and impermeable to many antibiotics, this bacillus is considered to be a strict aerobic (which needs molecular oxygen (O2) to live)

The "Blight" on a potato plant

Pseudomonas syringae infects plants already weakened by pollution, water stress, poor planting conditions, another disease, injuries, a strained or asphyxiated root system. Restoring a healthy environment seems to be the best preventive treatment.

Result of “Pseudomonas syringae pv. cannabina »

Bacillus subtilis

Some bacteria enrich the soil and prevent the spread of disease. For example, bacillus subtilis, a natural bacterium that fights mold-type Pseudomonas syringae pv. cannabina and other deadly fungi for your plant. These devouring bacteria are used in the cultivation of marijuana, they are found in the form of product available online.

prevention against end of harvest contagion 2
prevention against end of harvest contagion 2

Potassium bicarbonate

Another simple and effective solution is to apply potassium bicarbonate to the plants. Potassium bicarbonate, like its parent sodium bicarbonate (baking soda) is an alkaline substance that is very toxic to all types of fungi. Available in most garden centers, this white powdery substance is applied to plants to stop the spread of mold.

bicarbonate de potassium
Potassium bicarbonate also regulates the pH (8.2) and neutralizes excess acidity

For best effects, mix your potassium bicarbonate with Castile oil or soap (or any other organic soap rich in olive oil)

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Treat your interior

But the best treatment for this type of mold is to invest in prevention efforts. An easy and effective way to prevent an invasion of fungi or bacteria is to make sure your plants are well spaced from each other. Confining your plants too much will cause the foliage to feed poorly on light, making your environment warm and humid; which facilitates the spread of pathogens.

Canadian Greenhouse

If the propagation is done in outdoor cultivation, it is important to consider the air quality of its growing medium. The fans used by many marijuana growers are mainly there to prevent the spread of spores or bacteria in the environment. Caring about the quality of the air is of paramount importance, and in any type of culture.

Tags : Agriculture / GrowNewsPlanting
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Weed media broadcaster and communications manager specializing in legal cannabis. Do you know what they say? knowledge is power. Understand the science behind cannabis medicine, while staying up to date with the latest health related research, treatments and products. Stay up to date with the latest news and ideas on legalization, laws, political movements. Discover tips, tricks and how-to guides from the most seasoned growers on the planet as well as the latest research and findings from the scientific community on the medical qualities of cannabis.