Oloa
Oloa
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Ferrous sulphate heptahydrate
O le foliga mai o le ferrous sulfate o se lanumoana-lanumeamata monoclinic tioata, o lea la e masani ai ona taʻua o "lanumeamata lanumeamata" i faʻatoʻaga. O le Ferrous sulfate e masani ona faʻaaogaina i faʻatoʻaga e fetuʻunaʻi ai le pH o le palapala, faʻalauteleina le fausiaina o le chlorophyll, ma puipuia faʻamaʻi samasama mafua mai i le uʻamea le lava i fugalaʻau ma laʻau. O se elemene taua mo fugalaʻau-fiafia fugalaʻau ma laʻau, aemaise lava uʻamea. Ferrous sulfate o loʻo iai le 19-20% uʻamea. O se lelei faʻaputuga uʻamea, talafeagai mo laʻau e fiafia i le acid, ma e mafai ona faʻaaoga soo e puipuia ai ma togafitia ai faʻamaʻi samasama. E talafeagai le uʻamea mo le fausiaina o le chlorophyll i laʻau. A le lava le uʻamea, o le faʻavaeina o le chlorophyll e poloka, mafua ai ona afaina laau i le chlorosis, ma o laʻau e liu samasama samasama. O le vai vaʻaia o le ferrous sulfate e mafai ona tuʻu saʻo atu i ai uʻamea e mafai ona mitiia ma faʻaaogaina e laʻau, ma mafai ai ona faʻaititia le malosi o le eleele. O le faʻaogaina o le ferrous sulfate, i se tulaga masani, afai e faʻasusu saʻo le eleele i le vai ma se tali o le 0.2% -0.5%, o le ai ai se aafiaga mautinoa, ae ona o le uʻamea soluble i le eleele sasaʻa, o le a vave ona faʻamau i totonu o se insoluble uʻamea-aofia ai lotoa Ua le mafai. O le mea lea, ina ia aloese mai le leiloa o uʻamea elemeni, 0.2-0.3% ferrous sulfate solution e mafai ona faʻaaogaina e faʻasusu ai laʻau i luga o laulaʻau. -
Efuefu Ammonium Sulphate
Ammonium sulfate o se ituaiga sili ona lelei fetilaisa nitrogen, e talafeagai lelei mo lautele fualaʻau, mafai ona faʻaaogaina o se faʻavae fetilaisa, e mafai ona faia lala ma laʻau tuputupu aʻe, faʻaleleia le fua lelei ma fua, faʻalauteleina faʻatoʻaga teteʻeina, faʻaaogaina foi mo le gaosiaina o mea fetilaisa faʻapipiʻi, BB faʻalaʻau.
