Soil microbial population in agroecological production system

Abstract

Soil is a living organism and an abundance and microbial diversity contribute to its quality. The
objective of this work was to evaluate the effect of different soil management on the desity of
bacteria and fungi in the agroecological production system. The study was carried out on agroecological
property in the Municipality of Simão Dias, Sergipe. Soil samples were collected
from a forest, tomato area and lines and between the lines of apple trees. The samples were
diluted and plated to count the number of colony forming units and for morphological characterization.
No variation was observed for the density of bacteria and fungi in the areas sampled,
but less number and diversity of bacterial and fungal colonies were obtained in forest and tomato
areas. The different morphological types are distributed randomly along the dendrogram.
The results showed that low moisture content and soil tillage can reduce microbial diversity.