VARIATIONS IN THE FOLIAR AREA AND CONCENTRATIONS OF CHLOROPHYLLS AND ESSENTIAL NUTRIENTS IN LEAVES OF ROBUSTA COFEE (Coffea canephora P.) DURING AN ANNUAL CYCLE. AP [Internet]. 2018 May 31 [cited 2026 Jun. 10];11(4). Available from: https://revista-agroproductividad.org/index.php/agroproductividad/article/view/266