Vitamin and Mineral Contents of Carrot and Celeriac Grown under Mineral or Organic Fertilization

During 1987 and 1988, studies were carried out on the effects which the type of fertilizer, organic or mineral, may have on the nutrient content (vitamins, minerals and trace elements) of carrot and celeriac (celery root). Each crop was matched according to fertilization method grown in the same area, with the same soil type, variety and growing period. While the β-carotene and vitamin B1 content were increased in carrots and the dry matter and vitamin C in the celeriac grown with organic fertilizer, this fertilizing technique tended to decrease the weight and also the level of nitrate in the celeriac.