[Nutrient deficiency - vitality fertilizing]

abonos amendement du sol azote carence en substance nutritive chaulage coniferous forests deficiencias nutritivas encalado engrais enmiendas del suelo estado nutricional fertilizers fosforo growth rate liming magnesio magnesium nitrogen noruega norway nutrient deficiencies nutritional status periodic dressings phosphore phosphorus rendement rendimiento site factors soil amendments taux de croissance viabilidad viability yields