Abstract

ALVARADO AGUAYO, Allan Alberto; PILALOA DAVID, Wilmer Omar; CARRERA MARIDUENA, Braulio Javier  and  CARRERA MARIDUENA, Dolores Mariela. Comparative development of two Inga species based on their agroforestry potential. Rev. Inv. Cs. Agro. y Vet. [online]. 2020, vol.4, n.12, pp.186-199. ISSN 2664-0902.

Abstract The species of Inga edulis and I. vera are widely used in agroforestry systems. This study compares their phenological development indicators, mineral contribution and presence of beneficial organisms in their influence environment, through a completely randomized block design (CRBD) with three treatments and six repetitions. I. edulis has more promising polynomial growth, with 5.79 m height, diameter breast height (DBH) of 0.075 m and 31.66 branches with a diameter of 5.94 m shadow, surpassing I. vera that reaches 4.74 m height, DBH of 0.061 m and 14.33 branches with diametric shadow of 4.79 m. Both species differ in their contribution of macronutrients to the soil, exceeding I. vera in NH4, K and Mg, while I. edulis makes a greater contribution of P and Ca. Foliar mineral contení also differs, with I. edulis exceeding NH4, P and Mg in foliar, but I. vera contains more K and Ca in foliar. In the leaf litter, I. edulis has 3.13% N, while I. vera has 2.53% N. The fauna associated with these species is related to the presence of earthworms (Lumbricus terrestris) in the subsoil área with root influence. There is a higher average number of individuáis per tree in I. edulis (22.6) than in I. vera (14.9). However, in I. vera there is a larger population of Polistes dominula (4.6) and Vespula vulgaris (10.3), in relation to I. edulis, which reaches 2.7 and 5.2 individuáis per tree, respectively.

Keywords : Forest biomass; fabaceae; beneficial fauna; phenological development; leguminous; agroforestry system.

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