EDTA-Cu 15% o le kopa chelated organic.Pe a faʻatusatusa i le kopa inorganic, e sili atu ona faigofie ona faʻamavae, ma e le faʻapipiʻiina le palapala, o lea e sili atu ona faigofie ona faʻaogaina ma faʻaaogaina e laau ma faʻateleina le fua o fua o laau.E fa'aaogaina e fai ma fa'amea fa'ameamea ile fa'ato'aga.I le gaosiga o fetilaisa, e mafai ona faʻaaogaina lautele e avea o se mea faʻapipiʻi faʻapipiʻi mo le fugalaʻau foliar, faʻafefete faʻamaʻi, faʻasusu faʻafefeteina, faʻamaʻi vai-soluble, faʻalaʻau faʻalaʻau ma faʻamaʻi faʻapipiʻi, ma mo le fufuluina o itulau ma le faʻafefe., pa'u ma e mafai ona fa'aoga mo fa'ato'aga e leai ni palapala.