brown soil fluvial after plowing in autumn. the plain of the middle course of the river elbe. large greasy blocks of soil disinte

agricultural agriculture autumn block blocks brown bumpy cloudy course deep design dirt disinte disintegrate disintegration elbe environment farm farmer fertility field flat flip fluvial gardening greasy horse landscape large material melioration middle pattern pest plain plowing protection river rough soil subversion surface terms textured tractor turf turn waves weed wheat winter work