Urea fa'asa'oloto lemu

(1)ColorcomO le Urea o se faʻalaʻau e iai le maualuga o le nitrogen, e masani ona faʻaaogaina e tuʻuina atu ai le nitrogen e manaʻomia mo le tuputupu aʻe o laʻau, lea e mafai ona faʻaleleia le tuputupu aʻe o laau, faʻateleina fua ma faʻaleleia le lelei o fua.

(2)ColorcomO le Urea o se faʻamaʻi faʻamaʻi faʻavavevave, e mafai ona faʻaaogaina e fai ma faʻalaʻau faʻavae, faʻaofuofu, faʻamaʻi laulaau, o le matafaioi autu o le faʻalauteleina o le vaevaega ma le tuputupu aʻe, e faʻaleleia ai le olaola o laau.