POWDERY MILDEW
It’s worth considering that air
movement should not be forcefully
pushed directly through the
plant canopy, but move the air
around the plants. Circulation
should be sufficient to draw
minimal air movement through
the plants without disrupting
the leaf surface temperatures
and causing a wind chill effect. A
grower needs to experiment with
what constitutes the right amount
of air circulation depending on
their lights, room size, number of
plants, etc. Controlling overall room
practice of providing
“the
a constant breeze blowing
across plant surfaces may
actually be contributing to
the growth of fungi.”
94
Maximum Yield USA | June 2016
temperature and humidity is critical,
but it is important to keep in mind
what you can’t see or monitor right
at the leaf surface.
T
o win the battle against powdery
mildew, think small. Experiment with
refining your air circulation around
the plants and throughout the room.
Employ good fungicidal solutions,
because there are always spores in the
air and on plants surfaces ju st waiting.
Consider filtering air and of course
control the environmental conditions
you can monitor, but remember the
micro-climate world you can’t see.