Gridiron is a fungus infection, which is frequently confused with a lack of nutrient or an over-fertilisation. Gridiron first shows small, yellow-red spots. The leaf starts to yellow, the leaf apex brown and dry out, while the spots spread and form blains, which look like gridiron.
Right after the first fruit hairs are created, use the same fungicide again. Now your fungicide lasts for approx 3-4 week, what means that you need to use it again in maybe 4 weeks. But then note the following:
-Never use the same agent as before, because your plant will get resistent (always happens with fungicide). That means, the plant needs up to 3-4 weeks to dispel the agent, which is very important to happen.. Gridiron first shows small, yellow-red spots. The leaf starts to yellow, the leaf apex brown and dry out, while the spots spread and form blains, which look like gridiron.
Right after the first fruit hairs are created, use the same fungicide again. Now your fungicide lasts for approx 3-4 week, what means that you need to use it again in maybe 4 weeks. But then note the following:
-Never use the same agent as before, because your plant will get resistent (always happens with fungicide). That means, the plant needs up to 3-4 weeks to dispel the agent, which is very important to happen.