Where abouts are you? You should be able to get pure Manganese Sulphate from a chemicals shop and then just use humics or aminoacids, etc to chelate. In any case without a complete soil report it is hard Jonathan. Can you send one through? Whats the TEC? pH? I imagine both very high. Unless you have other complications I don’t think gypsum will do much for you. Probably you need Sulphur…

• This reply was modified 1 year, 3 months ago by  Andre Antunes.