TY - JA AU - Jokinem,R. TI - The effect of magnesium, potassium and nitrogen fertilizers on the content and ratios of nutrients in spring cereals and grassland crops PY - 1979/// KW - Magnesium KW - Nitrogen content KW - Potash fertilizers KW - Spring crops KW - Triticum KW - AGROVOC T2 - Annales Agriculturae Fenniae ER -