"Kulturteknik" . . "Crops" . . "Crops." . "Agronomy" . . "Agriculture biologique." . . "Afgrøder" . . "Reassigning land" . . "Sædskifte" . . "Omlægning" . . "Landbrugssystemer" . . . . . . . . "Organic Farming" . . . . . . . "Organic farming - agriculture with a future. The living soil. Crop Nutrition. Management of manures, slurry and organic residues. Rotation design for organic systems. Weed management. Pest and disease control. Livestock husbandry. Livestock systems. Grassland and fodder crops. Arable and horticultural crops. Marketing and processing. Physical and financial performance. Converting to organic farming. The wider issues." . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Agricultura ecologica" . . . . . . . . . . . . . . . . . . . . . "Organic farming"@en . "Organic farming" . . . . . . . . . . . . . . "Ouvrage général"@en . . . . . "Agricultura ecológica"@es . . . . . . "Agricultura ecológica" . "Organic Farming covers the principles of organic farming and the scientific base for them, making it clear that organic farming aims to rely primarily on biological processes and an understanding of ecological interactions."@en . . . . . . . . . . . . . "Ecologia agrícola." . . "Agricultura orgânica." . . "Agricultura orgánica." . "Ecologia agrícola Legislació." . . "Organic Methods." . . "Organisk gødning" . . "Farming systems" . . "Legislació." . . "dyrkning" . . "Økologisk landbrug" . . "Animal husbandry" . . "Manures" . . "Marketing" . . "Biologische Landwirtschaft" . . "Biologische Landwirtschaft." . "Agricultura biológica." . . "Agricultura biològica." . "Soil management" . . "økokogisk jordbrug" . . "Economics" . . "Markedsføring" . . "økokogisk landbrug" . . "Organic farming." . . "Organic farming" . "Husdyrbrug" . . "jordbrug" . . "økologisk dyrkning" . . "Besætningsstyring" . . . . "Planteernæring" . . "Cultivo." . . "Plant nutrition" . . "Rolnictwo ekologiczne." . . "Agricoltura e risorse naturali." . . "Livestock management" . . "Rotational cropping" . . "landbrug" . . "Økonomi" . .