Effects of soil moisture on the germination and emergence of sugar beet (beta vulgaris l.)

by Erkki Aura
Published 1975-01-01

Phosphate desorption from soil in anion-exchange resin extraction

by Erkki Aura
Published 1978-07-01

Oxygen as an exchangeable ligand in soil

by Erkki Aura
Published 1980-01-01

Soil compaction by the tractor in spring and its effect on soil porosity 

by Erkki Aura
Published 1983-03-01

Determination of available soil phosphorus by chemical methods

by Erkki Aura
Published 1978-07-01

Effect of the placement of fertilizer on the development of spring wheat

by Erkki Aura
Published 1967-09-01

Effect of residual nitrogen and fertilizer nitrogen on sugar beet production in Finland

by Veikko Brummer, Erkki Aura
Published 1974-09-01