Abstract
Abstract In 1987, a potato research project called “Minimized use of chemical inputs in potato production” was started in all five Scandinavian countries. In this paper, the results of one field trial series carried out at the Potato Research Institute, Lammi, Finland, during the years 1987–90 are reported. The main plots in a split-plot designed trial series consisted of three cropping systems: conventional, integrated and organic. The subplots included three cultivars differing especially in their late blight (Phythophtora infestans, (Mont.) de Bary) resistance: Bintje, Record and Matilda. Canopy measurements showed differences that can be attributed to different nitrogen supply in decreasing order from conventional to integrated to organic system. The trial sites were very heavily infested with potato scab, resulting in a very low percentage of I-class yield in susceptible cultivars Bintje and Matilda. Late blight was a serious problem in organically grown Bintje, as expected. Total yields in the integ...
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Schedule a callMore From: Acta Agriculturae Scandinavica, Section B - Soil & Plant Science
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