The change of microbial communities in rhizomicrobiome due to the land management

Abstract

The soil ecosystem plays an important role in soil health, nutrient availability, and agriculture productivity. Ecosystem alteration from natural forest into oil palm plantation has occurred in the past few years. Therefore, it is needed to study the microbial abundance which has a great role in the nutrient cycle. This experiment was conducted in August 2018 to January 2019. The experiment was arranged as randomized block design consisted of six ecosystems (natural forest, 2008 oil palm plantation, 2009 oil palm plantation, 2010 oil palm plantation, 2011 oil palm plantation, and 2018 oil palm plantation) and provided with four replications, using total plate count. The results showed that natural forest had the highest microbial communities of rhizomicrobiome (total bacteria 35.73×109, PSB 13.88×106, total actinomycetes 18.63x106, and total fungi 1.53×105)CFUg−1, followed by 2008 oil palm plantation which had the highest NFB 7.7×106 CFUg−1. 2011 oil palm plantation had the lowest microbial communities of rhizomicrobiome (total bacteria 11.06×109, PSB 2.93×106, NFB 7.76x106, total actinomycetes 2.91×106, and total fungi 0.26×105)CFUg−1. The research revealed that the alteration of natural forest to agricultural ecosystem influences the richness of microbial population in rhizomicrobiome which has a great role soil health, nutrient availability, and agriculture productivity.