O le EDTA ose chelate e puipuia ai mea'ai mai timuga i se va'aiga fa'alelei o le pH (pH 4 - 6.5). E masani ona faʻaaogaina e fafaga ai laʻau i faiga faʻamaʻi ma avea ma mea e faʻaogaina mo elemene. O le EDTA chelate e le afaina ai laula'au, i se isi itu, e lelei mo fuga laulaau e fafaga ai laau. O le EDTA chelate e gaosia e fa'aaoga ai se faiga fa'apitoa pateni micronization. O lenei metotia e faʻamautinoa ai le tafe fua, leai se pefu, microgranule e leai se caking ma faigofie ona faʻaumatia.
● O le faʻaogaina ma le faʻaogaina o le fua o le 3-4 taimi maualuga atu nai lo le uʻamea inorganic.
● Faʻateleina mea e maua i le chlorophyll.
● Faʻaleleia vaega o enzymes tali olaola, faʻaleleia le metabolism o le protein ma le photosynthesis.
● E iai sona sao taua i le metabolism o fuala'au, fa'amauina o le nitrogen biological, photosynthesis ma le fa'avaeina o le carbohydrate.
● Fesoasoani e faʻaleleia le faʻamaʻi faʻamaʻi ma faʻateleina fua.
● Puipuia lelei le gau o lau, maʻi lanu samasama, faʻamaʻi lanu paʻepaʻe, faʻamaʻi faʻamaʻi uliuli o le saito, paʻu fua, pala o fualaʻau, moss ma lichen i luga o le ogalaau, faʻamaʻi laau, faʻamaʻi le tuputupu aʻe, paʻu lau lau ma paʻu ese, ma isi.
E fetaui lelei mo fa'ato'aga uma, fuala'au 'aina, fa'afanua, fa'ato'aga, fa'ato'aga, fatu ma fa'ato'aga fa'ato'aga, ma isi.
O lenei oloa e mafai ona faʻaaogaina e ala i le faʻaogaina o le Irigation ma Foliar Spray. Mo le fa'asusu, fa'aaoga le 500-1000g ile la'ititi ole 80L ole vai. Mo le fa'aogaina o le Sulu, fa'aaoga le 500-1000g ile la'ititi ole 20L ole vai.
