Nepaljam x Oaxaca
Active Member
Bud rot (Botrytis) is a very common worldwide fungus that attacks both indoor and outdoor crops under certain conditions. “Bud rot” is also known as brown rot, and grey mold Air borne Botrytis spores can be found everywhere, all times of the year, and will attack many different species of plants. Botrytis will attack flowers, and eventually leaves and stems.
Growers running sea of green, perpetual harvest, remote grows, outdoor, or multiple strains (each with different flowering periods)should keep an eye out for Botrytis near harvest time.
Outdoor growers need to be hypersensitive to weather conditions near harvest time. Rain, morning dew, frost and cool fall nights may increase the risk of bud rot and powdery mildew.
Fully developed marijuana buds provide ideal conditions for spore germination: warm and moist plant tissues. Botrytis will initially attack the largest and densest buds in the garden, because they provide the idealconditions for germination. Weak plants will also be attacked rapidly.
Identifying and preventing bud rot
Bud rot will infect and turn colas to mush in a matter of days and may destroy a crop in a week if left unchecked. Botrytis loves warm,and humid (50% or over humidity) conditions. Lowering humidity will slow andstop spore germination. Good ventilation and decent air circulation help prevent infection.
A grow room may smell noticeably moldy if Botrytis has attacked one or more colas. Once a cola has been infected, Botrytis will spread incredibly fast. Entire colas will turn to brown mush and spores will beproduced, attacking other nearby colas. Ventilation may spread viable spores throughout the room.
Measures to prevent bud rot in the final stages offlowering:
Early veg and flower pruning of undergrowth to promote aircirculation
Hepa filter room and intake air sources.
Introduce low levels of ozone into room air. Ozone iseffective against pollen, powdery mildew and other airborne spores.
Lowering room humidity (warming nighttime air and ventingfrequently or using a dehumidifier)
Decreasing watering cycles and amounts to reduce room humidity
Removing fan leaves during the last few days before harvestto promote air circulation
Growers running sea of green, perpetual harvest, remote grows, outdoor, or multiple strains (each with different flowering periods)should keep an eye out for Botrytis near harvest time.
Outdoor growers need to be hypersensitive to weather conditions near harvest time. Rain, morning dew, frost and cool fall nights may increase the risk of bud rot and powdery mildew.
Fully developed marijuana buds provide ideal conditions for spore germination: warm and moist plant tissues. Botrytis will initially attack the largest and densest buds in the garden, because they provide the idealconditions for germination. Weak plants will also be attacked rapidly.
Identifying and preventing bud rot
Bud rot will infect and turn colas to mush in a matter of days and may destroy a crop in a week if left unchecked. Botrytis loves warm,and humid (50% or over humidity) conditions. Lowering humidity will slow andstop spore germination. Good ventilation and decent air circulation help prevent infection.
A grow room may smell noticeably moldy if Botrytis has attacked one or more colas. Once a cola has been infected, Botrytis will spread incredibly fast. Entire colas will turn to brown mush and spores will beproduced, attacking other nearby colas. Ventilation may spread viable spores throughout the room.
Measures to prevent bud rot in the final stages offlowering:
Early veg and flower pruning of undergrowth to promote aircirculation
Hepa filter room and intake air sources.
Introduce low levels of ozone into room air. Ozone iseffective against pollen, powdery mildew and other airborne spores.
Lowering room humidity (warming nighttime air and ventingfrequently or using a dehumidifier)
Decreasing watering cycles and amounts to reduce room humidity
Removing fan leaves during the last few days before harvestto promote air circulation
