सुपर फस्फेट आरो रक फस्फेटनि लगायदेरनायाव दै गलायनाया 75 जौखोन्दोनिख्रुइ बांसिन जानांगौ ।
It is necessary to have more than 75 percent of water solubility in the mixture of super phosphate and rock phosphate .