ʻAʻole like nā mea kanu phosphorus-based. No kēia kumu, hiki ke paʻakikī a paʻakikī paha ka mālama ʻana i ka meaʻai phosphorus i ka manawa kūpono no ka ʻuala.
Inā loaʻa i nā mea kanu ʻelua ka nui o ka phosphorus elemental, akā aia i loko o nā pūhui ʻokoʻa e hana like ʻole i ka lepo, hiki i nā mea kanu ke hoʻololi nui i ka nui a i ka manawa o ka wā ulu e loaʻa ai nā mea kanu. He mea paʻakikī kēia ʻoiaʻiʻo no ka nui o nā mea kanu ʻuala a alakaʻi i nā hewa pinepine o ka hoʻomomona ʻana.
No ka hōʻoia ʻana i ka loaʻa ʻana o nā mea kanu i ka mea i uku ʻia ma ka hoʻokomo ʻana i nā meaʻai meaʻai, ua hōʻailona ʻia nā mea kanu phosphate kalepa nui me ka pākēneka o ka phosphorus (P2O5) i loaʻa maoli i nā mea kanu. ʻO ka Phosphorus i loaʻa i nā mea kanu ke helu ʻia ma ke ana ʻana i ka solubility o kahi fertilizer phosphate i loko o ka wai a me ka ammonium citrate, kahi waikawa nāwaliwali. Hoʻohālike ʻo ia i nā ʻakika organik i kū maoli i loko o ka lepo a i hūnā ʻia e nā aʻa mea kanu.