[Plant nutrition in life cycle analysis. The use of fertilizers in cereal crop production]

abonos air pollution azote cadmio cadmium cereal crops cultivos de cereales cultivos de invierno culture d'hiver engrais environmental impact assessment fertilidad del suelo fertilisation fertilizer application fertilizers fosforo leaching lessivage du sol nitrogen phosphore phosphorus plant production pollution by agriculture pollution du sol pollution par l'agriculture potasio potassium soil fertility soil pollution suecia sweden triticum aestivum winter crops