Aeast
Shohin
Label is the law, so go off what the label says. You can look up any label online and see what its used for. Although dilution rates can get a little tricky to figure out in small doses.
Most fungus are fairly easy to control when using the proper fungicide and the proper timing. Most applications last about 10-14 days depending on the amount of rainfall, or if you water the foliage, then the application frequency increases. (Non ionic surfactants mixed in are usually a good idea). Protectant (barrier) fungicides need to be sprayed as new leaves/needles emerge to protect them until they "harden off". New fleshy leaves/needles are susceptible to infection, so there is no need to spray once they are fully grown because they are no longer susceptible. Even though some infections show up later in the year, they manifest when the leaves are first emerging.
Systemic fungicides have no real scientific data to back them up although they are used all the time for certain applications and some people swear by them. Systemic insecticides on the other hand are a different ball game all together.
Most fungus are fairly easy to control when using the proper fungicide and the proper timing. Most applications last about 10-14 days depending on the amount of rainfall, or if you water the foliage, then the application frequency increases. (Non ionic surfactants mixed in are usually a good idea). Protectant (barrier) fungicides need to be sprayed as new leaves/needles emerge to protect them until they "harden off". New fleshy leaves/needles are susceptible to infection, so there is no need to spray once they are fully grown because they are no longer susceptible. Even though some infections show up later in the year, they manifest when the leaves are first emerging.
Systemic fungicides have no real scientific data to back them up although they are used all the time for certain applications and some people swear by them. Systemic insecticides on the other hand are a different ball game all together.