Die Bedeutung der Saatgutqualität für Sortenvergleiche mit Sommergerste im ökologischen Landbau
2009
Müller, Dr. Karl-Josef
The results show that thousand grain weight, protein content of seed, seed contamination with fungi and seed emergence influenced yield potential of organically produced seeds of spring barley in variety trials under organic farming conditions during three years. Certified organic seed on average had smaller grains, lower protein content and brought 5% less yield than conventionally produced seeds of the same variety offered for trials by breeders. Different susceptibilities of the seeds for contamination with fungi influenced the ranking of varieties and seed lots additionally. The more of the previos seed quality parameters reached acceptable levels during organic seed production, the better starting point for a better yield was obtained. The results indicate that by comparing conventionally produced seeds of one variety with organically produced seeds of another variety the probability will be three times higher to handicap instead of favouring the variety tested with organic seed.
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