Phosphates

Asked January 12, 2013, 2:50 PM EST

the question I asked was this" on testing my soil I find it is deficient in phosphate and was going to add triple super phosphate but then I read an article which indicates that super phosphates can tie up trace minerals so would I be better adding bone meal ?? Thank you

Richland County South Carolina

1 Response

The phosphates in bone meal and triple superphosphate are similar. Both are forms of calcium phosphate. I know of no tie up of nutrients from triple super phosphate or any other phosphate source. If the you add way more phosphate than is needed, sometimes the plant availability of zinc is reduced, but it's not a tie up- it's a plant physiology problem. So just use rates that are suggested by the lab and you should be fine.
Dave Franzen, NDSU Extension Soil Specialist, Fargo, ND