Nutrients leaf contents of Myrciaria dubia (H.B.K.) McVaugh plants submitted to organic, foliar and mineral fertilization

Abstract

The objective of this research was to evaluate the response of "camu-camu" plants (Myrciaria dubia (H.B.K.) McVaugh) through the analysis of macro (Ca, Mg, P, K and N) and micronutrients (Fe, Mn e Zn) leaf contents. The experiment was carried out in the Brasileirinho Agricultural Community, Manaus, Amazonas, Brazil. The experimental design was made in randomized blocks with a 3 × 10 split plot scheme with three sampling periods and ten treatments, with three replications. Treatments consisted of organic (1L of chicken manure), mineral and foliar fertilization, and a combination between mineral and foliar fertilization. Plants that received the treatments with organic fertilization presented the highest contents of Ca, Mg and K. The plants that received the treatments with foliar fertilization presented the highest Fe, Zn and P contents.