Yield and nitrogen concentration of above- and below-ground biomasses of red clover cultivars in pure stands and in mixtures with three grass species in northern Europe - Hakala, Kaija; Jauhiainen, Lauri (Blackwell, 2007)
Keywords: Ka; puna-apila; apilat; nurmikasvit; typpi; juuristo; talvehtiminen; Trifolium pratense; grasses; nitrogen; root systems; wintering