Creating dynamic and diverse populations. Mixtures of landraces or old varieties (Liveseed Practice Abstract)

Practical Recommendations: Start a collection of diverse cultivars that fit to organic principles (avoid modern varieties obtained by biotechnology). Test and identify cultivars adapted locally; landraces are generally more robust with good nutritional and sensorial qualities; modern varieties could be productive but more fragile. Within a mixture, plants will have unpredictable susceptibility to diseases. Create the dynamic population by several cycles of multiplication. Selection will be done by the environment and by the farmer applying mass selection (positive or negative) in his own farm conditions