Results 111 to 120 of about 2,850,945 (254)

Systems of Land Use in the Firgi Plains of the Chad Basin [PDF]

open access: yes, 2006
Studies on land use in Africa have usually been carried out by ethnologists or human geographers and were rarely concerned with data on the physical conditions of soil.
Braukämper, Ulrich   +3 more
core  

Some phosphorus test values and fractions of inorganic phosphorus in soils

open access: yesAgricultural and Food Science, 1965
The relation between the P test values obtained by four methods and the inorganic phosphorus fractions of soil was studied on the basis of a material consisting of 346 samples of mineral soils originating from the surface layer and from the deeper layers.
Armi Kaila
doaj  

Comparison of different aggregate stability approaches for loamy sand soils

open access: yes, 2012
S. Saygin   +3 more
semanticscholar   +1 more source

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