Economic and biological traits and study results of the new sandy sainfoin variety (<i>Onobrychis arenaria</i>) ‘Atamansky 20’

The purpose of the current study was to estimate economic and biological characteristics properties a new, highly productive sainfoin variety resistant various stressful conditions. carried out as part competitive testing laboratory for breeding seed production perennial grass “ARC “Donskoy” in 2018–2021. experimental sowing done spring, with seeding rate 4 million germinated seeds per ha. area plots 25 m2 , 4–6 times repetition. There has been identified new ‘Atamansky 20’, an artificial synthetic population obtained by methods individual family selection poly-crossing varieties ‘Atamansky’, ‘Zernogradsky 2’ ‘Veles’. belongs sandy species. 20’ during years significantly exceeded standard 2’. green mass productivity higher than that on 4.5 t/ha, dry matter 1.4 0.14 or 17.1%, 20.6% 21.2%, respectively. According raw digestible protein percentage hectare, one 20.1% 25.7%, respectively; gross energy yield 12.3%. When using manure crop there can be used average 297 kg/ha N, 65 P 2 O 5 159 K O, which is respectively 32%, 27% 30% more when applied into soil.