UV-visible Spectroscopy as a New Tool to Predict the Bioactivity of Humic Fragments Induced by Citric/ Oxalic Acids on Eucalyptus Nutrition and Growth

Citric (CA) and oxalic (OA) acids are able to change the humic acid (HA) supramolecular structure, affecting HA effects on plants. This study aimed to evaluate the effect of CA and OA on HA supramo...