Abstract

RAMOS HERNANDEZ, Eder et al. N, P and K absorption by Arachis pintoi and weeds associated with Musa AAB. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.spe14, pp.2657-2670. ISSN 2007-0934.

Information on nutrient absorption in biomass from cacahuatillo (Arachis pintoi) and weeds associated with green plantain (Musa AAB) is not available in tropical regions. The experiment was conducted in Cardenas, Tabasco, in loam and clay loam soil, in order to determine the amounts of N, P and K that A. pintoi and weeds associated with the cultivation of plantain absorbs. The mean values of N, P and K absorbed were analyzed using a multifactorial analysis of variance (ANOVA) with a randomized complete block design with factorial arrangement 2 x 2 and n test for significant interactions (p≤ 0.05) among major effects (type of cover [main independent variable] and type of soil texture [conditional independent variable]) and between levels of main effects. The dry matter from weeds and A. pintoi was used to determine the amount of N, P and K absorbed by these covers. The amounts are absorbed by weeds: silty clay texture 4.1 kg N ha-1, 14.94 kg P ha-1 and 6.06 kg K ha-1; loamy texture: 4.31 kg N ha-1, 9.39 kg P ha-1 and 4.09 kg K ha-1. The amounts absorbed by A. pintoi are: clay loam, texture 1.92 kg N ha-1, 6.80 kg P ha-1 and 1.48 kg K ha-1; loamy: 3.37 kg N ha-1, 6.45 kg P ha-1 and 1.90 kg K ha-1.

Keywords : Arachis pintoi.; crop cover; N, P and K; nutrient absorption; weed.

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