Conventional and organic cropping systems at Suitia [in Southern Finland], 1: Experimental design and summaries

abonos agricultural chemicals agriculture biologique agriculture extensive avena sativa cereal crops cultivos de cereales engrais extensive farming fertilizers finland finlande finlandia hordeum vulgare leys monocultivo monoculture organic farming pesticide pesticides plaguicidas pradera temporal prairie temporaire produit agrochimique rotation culturale rotational cropping solanum tuberosum trifolium triticum aestivum vicia