Abstract
The investigation was carried out to evaluate effects of humic acid fertilizer on nutrient uptake (N, P, and K) and physiological characteristics of Fragaria x ananassa Camarosa'. Experiment treatments included different concentrations of humic acid (0, 10, 20, 30 and 40 ppm) with two methods of application (fertigation and spray). The results of the experiment showed that the highest amount of protein and N in fertigation are in concentration of 20 ppm and the highest amount of phosphorus, potassium and assimilation are in concentration of 10 ppm. In spray method the highest amount of N, protein and chlorophyll are in concentrations of 10 and 20 ppm and of potassium in concentration of 10 ppm.
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