Ertragsleistung und Rutingehalte verschiedenerBuchweizensorten unter ökologischen Anbaubedingungen

Buckwheat is an ancient traditional food and medicinal plant. In this study we investigated grain yield and rutin content of common (Bamby, Lileja, Hruszowska) and tataric (Lifago) buckwheat varieties under organic farming conditions at different N levels. Grain yield and rutin content were not significantly affected by the factors ‘year’ and ‘N-supply’. However, strong effects of the factor ‘variety’ could be determined. The tataric buckwheat Lifago showed highest grain and rutin yields compared to the common buckwheat varieties. Due to the rutin related bitter taste Lifago buckwheat is rather useful for medical application than for basic food. Converting rutin into less bitter active substance quercetin during processing as well as cross-breeding of common buckwheat x wild type buckwheat might be alternatives for basic food application. Since we found no effect of additional N-supply, buckwheat is well suited for low input farming systems like organic farming.