Abstract

GARZA LAU, Rubén; MALDONADO TORRES, Ranferi; ALVAREZ SANCHEZ, María Edna  and  BUENDIA ESPINOZA, Julio César. Nutrient supply of nitrogen-fixing tree species in agroforestry systems with coffee. Rev. Mex. Cienc. Agríc [online]. 2020, vol.11, n.4, pp.801-814.  Epub Sep 13, 2021. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v11i4.2465.

An experiment was carried out in the Huatusco region of Veracruz to test the effect of the proper use of fertilizer on the production of coffee under the shade of nitrogen-fixing tree species. For this, four treatments were proposed in four agroforestry systems (coffee-Inga vera, coffee-Juglans pyriformis, coffee-Erythrina poeppigiana and coffee-E. Poeppigiana-Grevillea robusta), with three blocks of 10 plants each, which consisted of : a) without fertilization; b) soil fertilization; c) foliar fertilization; d) soil and foliar fertilization. The nutritional balance was evaluated by means of two foliar analyzes carried out before and after fertilization. The yield was evaluated during the months of November and December. With the proposed nutritional management, the concentrations of N, P, K, Ca, Mg and Mn increased, while those of Fe, Cu and Zn decreased, approaching the optimum levels for cultivation. No significant differences (p≤ 0.05) in nutrient concentrations were found between the four treatments in systems IV and EG. In EP, there was a difference for Ca and Mn, in treatments 2 and 3. In JP, there was a difference for Mg in the three treatments.

Keywords : foliar analysis; nitrogen fixation; nutritional balance; yield.