Tatolu superphosphate i Fofofota Fertilizers
Triple superphosphate (TSP), E faia i le phosphoric acid faʻapipiʻi ma le eleele phosphate papa. O se faʻamaʻi maualuga phosphate soluble vai, ma faʻaaogaina lautele mo le tele o palapala. E mafai ona fa'aogaina e fai ma fa'ameamea fa'avae, fa'afuifu fa'aopoopo, fa'ama'i fa'ama'i ma mea mata mo le gaosiga o le fa'apalapala.
O le TSP o se faʻamaʻi maualuga, faʻafefeteina faʻamaʻi phosphate fertilizer, ma o lona aoga phosphorus e 2.5 i le 3.0 taimi nai lo le calcium masani (SSP). O le oloa e mafai ona faʻaaogaina e fai ma faʻalaʻau faʻavae, faʻaofuofu pito i luga, faʻamaʻi fatu ma mea mata mo le gaosiga o le faʻafefiloi; fa'aaoga lautele i araisa, saito, sana, sorghum, cotton, fualaau 'aina, fualaau faisua ma isi fua o mea'ai ma fua o le tamaoaiga; faʻaaogaina lautele i le eleele mumu ma le samasama eleele , Brown eleele, samasama fluvo-aquic eleele, eleele uliuli, eleele kinnamon, eleele lanu viole, eleele albic ma isi uiga eleele.
Ia fa'aaogaina le metotia fa'aleaganu'u masani (Den method) mo le gaosiga.
Fosphate papa pauta (slurry) tali i le sulfuric acid mo le vai-malosi tete'a ina ia maua susu-fa'agaoioiga phosphoric acid. A maeʻa le faʻamalosi, e maua le phosphoric acid faʻapitoa. Concentrated phosphoric acid ma phosphate papa pauta ua fefiloi (chemically fausia), ma o mea tali e faaputu ma matua, granulated, mago, sieved, (pe a talafeagai, afifi anti-caking), ma cooled e maua ai le oloa.
Superphosphate, e taʻua foi o le superphosphate masani, o se phosphate fertilizer saunia saʻo e ala i le pala phosphate papa ma le sulfuric acid. O vaega aoga autu o le calcium dihydrogen phosphate hydrate Ca (H2PO4) 2 · H2O ma se vaega itiiti o le phosphoric acid e leai se totogi, faʻapea foʻi ma le anhydrous calcium sulfate (aoga mo le sulfur deficient soil). Calcium superphosphate o loʻo i ai le 14% ~ 20% P2O5 aoga (80% ~ 95% o loʻo soluble i le vai), lea e faʻaaogaina i le vai-soluble faʻanatinati phosphate fertilizer. Efuefu po'o le efuefu pa'epa'e pa'epa'e (po'o vaega ninii) e mafai ona fa'aoga sa'o e fai ma fetilaisa phosphate. E mafai fo'i ona fa'aaogaina e fai ma mea e fai ai le fetilaisa fa'afefiloi.
O se fetilaisa e leai ni lanu pe efuefu malamalama (po'o le pauta). Solubility o le tele o ia mea e faigofie ona solu ile vai, ae o nisi e le mafai ona solu ile vai ma faigofie ona solu ile 2% citric acid (citric acid solution).
