Haku
Viitteet 1-2 / 2
The effect of magnesium fertilizing on spring cereal and cultivated ley yield and on soil nutrient contents at two potassium and nitrogen fertilizer levels
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1978)
Effect of the placement technique and amount of fertilizer on spring wheat and barley grown on clay soils : I. Effect on grain yield
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1986)