Haku
Viitteet 1-3 / 3
The dependence of yield increases obtained with phosphorus and potassium fertilization on soil test values and soil pH
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1980)
Effect of soil copper content and pH on the efficiency of copper sulphate in a pot experiment
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1987)
Effect of applied selenite and selenate on the selenium content of barley (Hordeum vulgare)
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1983)