mulching the topsoil on a vegetable bed with mowed grass from the lawn. production of biohumus organic fertilizer. earth erosion

agriculture bark bed beds biohumus biological closeup cultivation decorative earth ecology environment environmentally erosion farm farming fertilizer fertilizers fiber friendly from garden gardening grass green ground grow growing growth harvest healthy heap improving incorporation lawn manure mowed mulch mulching natural nature organic plant plants processing production shredded soil the tomatoes topsoil vegetable waste