Microbial Shifts Following Five Years of Cover Cropping and Tillage Practices in Fertile Agroecosystems.

摘要: Metagenomics in agricultural research allows for searching bioindicators of soil health to characterize changes caused by management practices. Cover cropping (CC) improves mitigating nutrient losses, yet the benefits depend on tillage system used. Field studies indicator taxa within these systems are scarce and narrow their scope. Our goal was identify from microbes that were responsive CC (three levels) (chisel tillage, no-till) treatments after five years under field conditions. We used rRNA gene-based analysis via Illumina HiSeq2500 technology with QIIME 2.0 processing microbial communities. results indicated differentially changed relative abundances (RAs) copiotrophic oligotrophic guilds. Corn-soybean rotations legume-grass increased RA decomposers more than grass CC, whereas only bare fallows favored stress-tolerant oligotrophs, including nitrifiers denitrifiers. Unlike bacteria, fewer fungi archaea detected; poorly identified, responses inconsistent, while fallow treatments. This is primary information understanding potential managing community compositions using cover crops reduce losses environment.