Effects of green-manure and tillage management on soil microbial community composition, nutrients and tree growth in a walnut orchard.

ABSTRACT: This study characterized the effect of green manures (February orchid, hairy vetch, rattail fescue and a no-green-manure control) and the termination method (flail or disk) on nutrient contents, enzyme activities, microbial biomass, microbial community structure of rhizosphere soil and vegetative growth of walnut tree. All three selected green manures significantly enhanced the water content, organic C, total N and available P. The rattail fescue significantly decreased the mineral N. Total organic C, total N, mineral N and available P were significantly greater under flail than under disk. Hairy vetch and February orchid significantly improved levels of soil β-glucosidase, N-acetyl-glucosaminidase and acid phosphatase activity, whereas rattail fescue improved only β-glucosidase activity.

SUBMITTER: Dong N 

PROVIDER: S-EPMC8377041 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature