Haku
Viitteet 11-15 / 15
The dependence of the phosphorus uptake of plants on the properties of the soil
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1973)
Vergleich einiger für die Beurteilung des Nährstoffzustandes der Böden gebräuchlichen chemischen Analysenmethode
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1963)
Straw, phosphorus and nitrogen : a preliminary experiment on the decomposition of straw in soil
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1971)
Comparisons of five soil testing methods for phosphorus determination
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)
Acid ammonium acetate and acid ammonium acetate/EDTA as extractants for phosphorus-32, aluminum and iron in soils
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1977)