Agriculture Ecosystems & Environment · 1992 · 59 citations · 6 references
AgricultureAgronomySoil SciencesSoil FertilitySoil ManagementSoil ScienceSoil Biological ManagementSoil Fertility MaintenanceSoil Fertility ManagementSoil FormationSoil HealthSoil QualityGrassland Soil ConservationGrassland Soil FaunaSoil Fertility During EstablishmentSoil Fertility Potential
6
Soil organic matter, effects on soils and crops
A. E. Johnston · Soil Use and Management · 1986 · 231 citations