After using Fertilizer Sapphire, I have reduced the use of Fertilizer by a 10% because with its quality I don’t have to apply as many times as with other Fertilizers.
Juan Carlos Ortiz Baez
My potatoes plantations responded excellent to this type of Fertilizer, specially the ones with Leonardite. I can see greener leaves with very strong and healthy stems. I started to use 6 months ago and now that is all I use as Fertilizer.