Soil fertility and the nutritive value of crops.
D005308:Fertilizers; D005502:Food / Q000592:standards; D007455:Iodine / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D009747:Nutritional Physiological Phenomena; D010939:Plant Poisoning; D010940:Plant Proteins / Q000378:metabolism; D010945:Plants, Edible / Q000378:metabolism; D012987:Soil; D014131:Trace Elements / Q000172:deficiency; D014815:Vitamins / Q000378:metabolism
D005308:Fertilizers; D010940:Plant Proteins; D012987:Soil; D014131:Trace Elements; D014815:Vitamins; D007455:Iodine; D009584:Nitrogen