Haku
Viitteet 1-3 / 3
Growth of rye grass, barley and oats in soils amended with ashes of wood, bark, peat and coal
(Agricultural Research Centre, 1989)
Wood, bark, peat and coal ashes as liming agents and sources of calcium, magnesium, potassium and phosphorus
(Agricultural Research Centre, 1991)
Boron deficiency in barley
(Agricultural Research Centre, 1991)