Fungicides are a very useful item in the gardener’s arsenal, and when used correctly, they can be extremely effective in the fight against disease. They can also be a little mystifying, and if used incorrectly can yield some pretty disappointing results. Before you start spraying, one important distinction to understand is the difference between protectant and eradicant fungicides. Keep reading to learn more.
What is a Protectant Fungicide?
Protectant fungicides are sometimes also called preventative
fungicides. Like the name suggests, these are meant to be applied before a
fungus takes hold, as they create a protective barrier that stops infection
before it starts.
These can be effective before a fungus is present, or when a
fungus is present but has not yet entered the plant. Once your plant is already
showing symptoms of infection, it’s too late for protectant fungicides to have
an effect.
What is an Eradicant Fungicide?
Eradicant fungicides are sometimes called curative
fungicides, though there is a slight difference: a curative fungicide is for
plants that are showing no visible symptoms of the fungus, while an eradicant
fungicide is for plants that are already showing symptoms. In both cases,
however, the fungicide is meant for plants that have already been infected, and
it attacks and kills the fungus.
These fungicides are the most effective in the early stages
of infection, especially in the first 72 hours, and are not a guarantee that
the plant will be saved or the fungus will be completely wiped out, especially
if symptoms are present and advanced.
Protectant vs. Eradicant Fungicide
So, should you choose an eradicant or protectant fungicide?
That depends upon several factors, including what time of year it is, what
plants you’re growing, whether they are prone to fungus, and whether you think
they are infected or not.
Protectant fungicides are best for areas and plants that
have shown symptoms of fungus in past growing seasons, to be applied before
that time in the present growing season.
Eradicant or curative fungicides should be used if you
suspect a fungus is already present, such as if symptoms have begun to show on
neighboring plants. They will have some effect on plants that are already
displaying symptoms, but they work much better if you can catch it before that.
Fungicides are a very useful item in the gardener’s arsenal, and when used correctly, they can be extremely effective in the fight against disease. They can also be a little mystifying, and if used incorrectly can yield some pretty disappointing results. Before you start spraying, one important distinction to understand is the difference between protectant and eradicant fungicides. Keep reading to learn more.
What is a Protectant Fungicide?
Protectant fungicides are sometimes also called preventative
fungicides. Like the name suggests, these are meant to be applied before a
fungus takes hold, as they create a protective barrier that stops infection
before it starts.
These can be effective before a fungus is present, or when a
fungus is present but has not yet entered the plant. Once your plant is already
showing symptoms of infection, it’s too late for protectant fungicides to have
an effect.
What is an Eradicant Fungicide?
Eradicant fungicides are sometimes called curative
fungicides, though there is a slight difference: a curative fungicide is for
plants that are showing no visible symptoms of the fungus, while an eradicant
fungicide is for plants that are already showing symptoms. In both cases,
however, the fungicide is meant for plants that have already been infected, and
it attacks and kills the fungus.
These fungicides are the most effective in the early stages
of infection, especially in the first 72 hours, and are not a guarantee that
the plant will be saved or the fungus will be completely wiped out, especially
if symptoms are present and advanced.
Protectant vs. Eradicant Fungicide
So, should you choose an eradicant or protectant fungicide?
That depends upon several factors, including what time of year it is, what
plants you’re growing, whether they are prone to fungus, and whether you think
they are infected or not.
Protectant fungicides are best for areas and plants that
have shown symptoms of fungus in past growing seasons, to be applied before
that time in the present growing season.
Eradicant or curative fungicides should be used if you
suspect a fungus is already present, such as if symptoms have begun to show on
neighboring plants. They will have some effect on plants that are already
displaying symptoms, but they work much better if you can catch it before that.