Studies of conditions of soil moisture on growth of grasses in sloped land, 2: Influence of soil moisture and manuring on growth of alfalfa

agricultural chemicals agua del suelo biological development contenido de agua en el suelo crecimiento croissance crops cultivos dicotiledoneas dicotyledons eau du sol economic plants engrais feed crops feed legumes fertilizers fisiologia fonction physiologique growth legumes leguminosae leguminosas leguminosas forrajeras medicago medicago sativa papilionoideae physiographic features physiological functions physiologie physiology plantas plantas forrajeras plante plante de culture plants produit agrochimique rosales sloping land soil water soil water content teneur en eau du sol terre en pente terreno en declive