No Products in the Cart
As with many garden pathogens, prevention is the key to avoiding botrytis. Keeping a clean room and removing any dying or dead plant material is a good first step for any grower. In a sense, botrytis is an environmental disease, meaning it can only develop when the environmental conditions are conducive to its growth.
Prevention of botrytis is easier for indoor horticulturists because they have more control over environmental conditions.
Humidity is the largest contributing variable to botrytis in an indoor garden. As long as the humidity is kept below 55%, botrytis is unlikely to develop. The other contributing environmental factor is temperature.
Botrytis can only germinate on damp or wet plant tissue in temperatures between 50 to 70°F. However, once the fungus has developed, it can withstand a larger range of temperature and humidity.
Botrytis grows most rapidly in lower temperatures with high humidity. For the indoor grower, the best prevention is to maintain a lower humidity in the growing environment, especially during fruiting and flowering stages.
To be extra safe, an indoor grower should keep temperatures on the warmer side and monitor the dark-cycle temperature.
A heater may be needed during the dark cycle to minimize the temperature variance and reduce the possibility of condensation.
A ventilation system with atmospheric controllers allows an indoor grower to ensure environmental conditions are in check and are not inviting infection.
Oscillating fans that create good air flow within the room will help keep the room’s humidity uniform.
Another way an indoor grower can prevent botrytis is by using a filtration system or other air purification system. HEPA filters enable growers to filter out many spores commonly found in the air.
This will greatly reduce the chance of developing botrytis and other pathogens. Be sure to place the filter in a bag and remove it from the growing area before gently removing it for cleaning.
Filters trap many spores that are still viable and, in some cases, growers inadvertently expose their gardens to all sorts of nasty things when they remove the intake filter for cleaning.
Air purification systems offer another way for growers to eliminate spores from the growing space. Photocatalytic air purifiers are the best option for indoor growers looking to eliminate air-borne molds because they completely destroy the spores and do not trap any viable pathogens.
If you choose to use a photocatalytic air purifier, be sure to note if it produces ozone. High levels of ozone can be harmful to people and plants when it becomes concentrated in an enclosed area like a growroom. This can be counterproductive to the plants and dangerous to the grower.
Source exerpt: Maximum Yield,2/28/2020,"Beating Botrytis: How to Identify, Prevent & Treat a Common Crop Ailment"https://www.maximumyield.com/beating-botrytis-how-to-identify-prevent-treat-a-common-crop-ailment/2/1261