In Austria organic soybeans are mainly produced in the eastern part of the country
due to its temperature requirements. To examine genotypic differences with respect to
seed quality a three-year field trial with seven soybean cultivars was conducted. The
cultivar `Essor´ showed significantly higher (p<0,05) values for corn yield, thousand
grain weight and seed protein content in all three years compared to to the early
maturing cultivar `Merlin´. During the whole observation period the cultivars
`Essor´and `Lambton´ produced most stable corn yields while ´Essor´ and ´Cardiff´
revealed most stable seed protein contents. Based on our results, soybean cultivars of
maturity group 00 had higher grain yields as well as higher seed protein content in
comparison to early maturing cultivars (maturity group 000) grown under natural
conditions prevalent in eastern Austria
