Phosphoric acid

Fine

Fertiliser dealer whom I met recently told me that Tomato needs 30kg of nitrogen and 45kg of phosphoric acid for 1000 square meters.These numbers are quite different from what I have believed.
Especially, regarding to phosphoric acid, almost nobody had told me anything. According to him, phosphoric acid is necesarry for primaly and secondaly metabolism. Primaly metabolism makes tomato tree and secondaly metabolism makes sugar content.
As fas as I know phosphoric acid is left in the soil and farmers do not know how to deal with it. As to say, phosphoric acid is a nuisance.
Phosphoric acid is taken by the very healthy new tip of roots. And the very healthy tip can be created in the soil which does not cantain organic acid which is created from the organic matters like left roots which is not ripen into full maturity.

Now it is necassary to add microorganics to break down organic mattes in the soil for increasing sugar contents of tomatoes.