Effects of herbicides and mulch on the soil carbon, nitrogen, and microbial composition of two revegetated riparian zones over 3 years

Abstract Purpose Revegetation of riparian zones is important to improve their soil nitrogen (N) dynamics and preserve microbial compositions. However, the success revegetation projects currently depends on weed control reduce non-target vegetation competing over nutrients ensure target plant species growth survival. Different methods affect composition N cycling. long-term effects herbicides pools community remain uncertain even after cessation herbicide application. Materials This study compared impacts different (Roundup ® , BioWeed™, Slasher acetic acid) with mulch structure 3 years establishment (herbicides applied repeatedly in first 2 which no were third final year). Results discussion Soil biomass carbon (MBC) was significantly higher Roundup acid at month 26 Kandanga site 10 Pinbarren site. MBC remained 12 months application BioWeed™ groups also lower than acceptable threshold (160 mg kg −1 ) 34 NO − -N 22 could be partly explained by decreased abundance denitrifying bacteria ( Candidatus solibacter C. koribacter ). Additionally, both bacterial fungal communities only group all other herbicides. The differences persisted Conclusion Our suggested that assist would beneficial for functionality. use may have long-lasting diversity therefore should used caution as part an integrated land management plan.