Q. I have been hearing about a new fungicide to control late
blight on tomatoes called Serenade®. Can you tell me more about it?
Serenade® is a biological
fungicide (biofungicide) that has a
broad label to suppress and control many key diseases of
fruits, vegetables and ornamental plants, including late
blight on tomatoes. Biofungicides such as Serenade® are
made from beneficial microorganisms such as bacteria and
fungi. The active ingredient in Serenade® is the QST 713
Strain of Bacillus subtilis.
Serenade® has multiple modes of action to protect plants
from pathogens. It inhibits pathogens from infecting
leaves by preventing them from attaching to the leaf in
the first place. If pathogens do manage to attach to a
leaf, Serenade® outcompetes them for space on the leaf
and inhibits their ability to absorb nutrients. It also
destroys their ability to reproduce.