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Potassium release characteristics of selected Peruvian soils

Potassium release characteristics of selected Peruvian soils

Oelsligle, Donald Daniel, 1943-

Text (1972)

Part of Electronic Theses & Dissertations

Effect of rate, placement and source of potassium on yield and mineral content of potatoes and phosphorus forms and equilibria in selected Peruvian soils

Effect of rate, placement and source of potassium on yield and mineral content of potatoes and phosphorus forms and equilibria in selected Peruvian soils

Valverde, Carlos Suarez

Text (1970)

Part of Electronic Theses & Dissertations

Genesis morphology and classification of Michigan alfisols and Peruvian entisols

Genesis morphology and classification of Michigan alfisols and Peruvian entisols

Zavaleta, Amaro

Text (1967)

Part of Electronic Theses & Dissertations