Influence of agriculture on physico-chemical properties of orthic luvisols of Kaluszynska Upland

agricultura tradicional agriculture traditionnelle analytical methods boulder clay soils carbon carbone carbono disponibilidad de nutrientes fosforo genetic soil types magnesio magnesium muestreo nutrient availability perfil del suelo ph del suelo ph du sol phosphore phosphorus poland pologne polonia potasio potassium profil du sol sampling soil soil chemicophysical properties soil morphological features soil ph soil profiles soil texture soil types sol statistical methods suelo technique analytique textura del suelo texture du sol tipos de suelos traditional farming trait morphologique du sol type de sol