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AgricultureAgroforestrySoil SciencesSoil FertilitySoil ManagementSoil ScienceAgroforestry LandscapesAgroforestry SystemsSoil Fertility DynamicsSoil Fertility ManagementTillage SystemsAgrisilvicultural SystemsAgroforestry Soil ConservationAgroforestry System DesignTropical Agroforestry
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W. Heber Green, G. A. Ampt · The Journal of Agricultural Science · 1911 · 2.4K citations
J. R. Philip · Soil Science · 1957 · 1.2K citations
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