Abstract:
Utilization of Arbuscular Mycorrhiza (MA) as beneficial soil microbes is
expected to support nutrient demand for improving crop performance.
However, under the agroforestry system that facing a problem on
light, water, and nutrients competitions, the role of MA is becoming
unclear. The purpose of this research was to examine how far different
management in Coffee Pines Agroforestry System (CPAS) affects MA
structure and compositions. The relationship between soil parameters
(e.g. pH, soil organic C) and MA activities was also being evaluated.
The selected plot according to existing management practices were
chosen as follows: (1) Low management (LC); (2) High management
which then compared to (3) Business As Usual (BAU) plot in which were
repeated in triplicate. ANOVA and multivariate analysis were employed
to determine the effect of the treatments. The result showed that there
were significant differences (p<0.05) in the structure and composition of
the MA, in terms of the total number of MA spores and the abundance
of Glomus sp. under the coffee tree sampling point, while the lowest
number was detected in Gigaspora sp. genera. The more intensive
land management resulted in a higher abundance of MA biomass which
then leads to increased soil P and uptake-P along with MA infection.
