Organic fertilizers, green manures and mixtures of the two revealed their potential as substitutes for inorganic fertilizers used in pineapple cropping

•Even if only applied at planting, organic fertilization of pineapple is possible.•Laboratory screening identified potential substitutes for inorganic fertilizers.•Synergetic nitrogen mineralization for Lablab purpureus plus organic fertilizer.•Nitrogen mineralization class and humus potential calculated for finer screening.•Similar yields obtained with Mucuna pruriens plus organic or inorganic fertilizer.