[Influence of a structure conserving management on selected biological and physical soil properties - A comparison based on practical work in the biosphere reserve Schorfheide-Chorin]

agricultura alternativa agriculture alternative alternative agriculture analyse de sol biologie du sol brandenbourg brandenburg brandenburgo cero-labranza conservation des sols cropping patterns cropping systems direct sowing ecologia ecologie ecology encuestas escarda land use loam soils manejo del suelo mise en valeur du sol muestreo organic matter plan de culture sampling sandy soils semis direct siembra directa sistemas de cultivo soil soil biology soil chemicophysical properties soil conservation soil management soil structural units soil testing sol sol sableux sol sablolimoneux suelo suelo arenoso suelo franco surveys textural soil types tipos texturales de suelos type de sol textural unidades estructurales de suelos utilisation des terres weed control zero tillage