oidio

Powdery mildew is a fungus that is diagnosed while the scourge affects both the indoor cultivation of cannabis crops as outdoor or greenhouse for propagation needs to be given strong hygrometric variations, passing suddenly from low to high relative humidities, a situation that occurs very commonly in crops under artificial lights and greenhouse. Outdoors the pest is more seasonal and usually occurs more often in spring and autumn. It manifests as white powder or very typical ash, which can be confused with dust on leaves and shoots. In a second phase attacked leaves become yellowish and eventually dry. Powdery mildew is a fungus external operation is very similar to that of sucking insects, as their small spores are carried by the wind and when they land on a leaf-sucking rootlets thrown about and absorb nutrients from the plant.
Powdery mildew in the indoor growing of marijuana

In indoor growing, as we said above, powdery mildew is an increasingly common disease and in some cases it is necessary to take preventive measures since the beginning of the crop, but what will help us to avoid contamination of the fungus, is the climate control of our area of ​​cultivation. This is to prevent relative humidities of our grow room does not exceed 65% and reach over 40% off. This perhaps we'll need a humidifier to keep the bulbs burning humidity does not drop too much due to the heat of the bulb. During the night rest of our plants, we should scale the ventilation so that the respiration of plants condensation within the space. In extreme cases we can resort to the use of a dehumidifier. Another detail that may help prevent the spread of the fungus is not to put too heavy marijuana plants, and shady areas are formed in the lower parts of plants that favor the development of powdery mildew. If you can not avoid the ups and downs of your hygrometer, you can resort to preventive pesticide treatments.
Powdery mildew on greenhouse and outdoor growing

In the outdoor cannabis cultivation, the plague of mildew occurs with a certain seasonality being the spring and the autumn, the seasons with more susceptibility to the disease. To try to avoid it, we must keep the plants free of dead leaves and avoid planting in areas with little sunshine. If grown in pots should you turn the pots so that all parts of the plants have good sun exposure. We should also avoid planting plants too close together. It is important that air circulation between plants. In the greenhouses we try to get the air circulation inside the greenhouse. This is highly recommended to install some fans inside the greenhouse forcing air circulation. In the fall is recommended preventive pesticide treatments biological fools if we live in where abundant produce fog or mist.
Control of powdery mildew

Within the biological treatment of powdery mildew control, we can find the propolis, or ecoprotect oidioprot of OSPO. There are two proven products, but due to the high resistance of the fungus, we perform the treatment every 10/12 days to 10 days before harvest.
Resin degraded by the powdery mildew

It is found also in the market products of chemical synthesis as antioidio Compo, which we can use if we have exhausted the possibilities of biological origin, always bearing in mind that we must respect the safety period in this case is about 30 days.

Although we recommend the use of sulfur as bioremediation for control of powdery mildew in many gardening books and manuals, it is highly inadvisable to use with cannabis because although we make it very precocity, the smell of sulfur is impregnated in marijuana.