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LW-R-2: Cultivation and propagation of thermophilic arable crops

The illustration contains a biaxial chart. The chart illustrates, by means of lines for 1991 to 2021, the number of the varieties – of summer durum wheat, winter durum, soybeans and sorghum – certified. In recent years, the number of certified varieties in respect of all crops has risen – significantly so – in respect of soybeans and summer durum.
Source: BSA (variety databases; database on seed production)
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Short link: www.uba.de/m42805en