There is a big difference between “straight” phosphate rock, and reactive phosphate rock.

Essentially “straight” phosphate rock has a low natural solubility and is unsuitable for direct application as a fertiliser without further processing. We do not use “straight” phosphate rock in our fertilisers.

Reactive phosphate rock is a phosphate rock that meets or exceeds the minimum set standards for solubility, as measured by citric and formic solubility tests.

It is these “reactive” phosphate rock types that have been trialled as direct application fertilisers to great effect.

Some sources of reactive rock phosphate price news do not meet other standards, such as maximum allowable levels of heavy metal contaminants. The rock we source is not only a highly soluble variety, but also contains well below the maximum allowable limits for contaminants.