Variaciones de la microfauna del suelo con la implantación de 18 modelos agroecológicos en 6 municipios de Norte de Santander, Colombia

Abstract

Introduction-The microfauna allows knowing the degree of disturbance in which a soil has been submitted by agricultural management.

Objective-. The research aimed to assess the variations of the soil microfauna during the implementation process of 18 agroecological models in six municipalities of Norte de Santander

Methodology. The present study was carried out in 15 farms in the municipalities; Arboledas, Convencion, La Playa, La Esperanza, Ocaña and Mutiscua of the Norte de Santander Department where 18 agro-ecological models were established (3 / municipality). The indicators of abundance and diversity of the microfauna (nematodes, protozoa and rotifers) were assessed before establishing the crops and one year after their implementation.

Results- One year after establishing the agroecological models the microfauna indicator improved in La Esperanza, La Playa, Mutiscua and Ocaña and not in Arboledas and Convencion, and in seven of the nine agroecological models where corn participated, two of the three where cocoa and plantain participated, in all where beans participated and in AL-Ci-Z the indicators of the macrofauna were favored, which does not happened in the rest and in AL-Mo-TA model.

Conclusions: The indicators of abundance and biodiversity of the microfauna varied with the implementation of agroecological models based on the combination of crops in each agroforestry system, the edaphic conditions and the specific and general climate of each area, showing the multiple factors that influence in the variation of the microfauna.