• • • Influence of forage varieties on productivity and nutritional values of grass ecosystems grown for haylage
The paper reports on high-productive grass ecosystems, composed of new varieties of grain forage and high-protein crops. Obtained haylage was balanced in essential nutritional elements. The experiment revealed the role of grass species and varieties in obtaining of feed with high concentration of digestible protein and sugar. Species and variety compositions of annual grass mixtures were optimized. Variety significantly influenced productivity and forage value of farm ecosystems. Oats “Irtysh 22” performed the best. In mixture with pea “Omskiy 9” and “Irtysh 22” gave 12.3 t ha-1 of grain-stem mass, providing 40% of total mixture yield (31.1 t ha-1). Oats “Irtysh 21” produced 9.7 t ha-1 of grain-stem mass in the same mixture. Barley “Omskiy 89” provided the highest haylage mass — 12.7 t ha-1, exceeding “Omskiy golozernyy 2” by 23%. “Omskiy 89” is better for the regions of stable water supply — northern and southern forest-steppe of Western Siberia, while “Omskiy golozernyy 2” — for steppe. The highest productivity (4.46–5.99 t ha-1 of feed units) was provided by oats “Irtysh 22”, cultivated in two-component mixtures with pea “Sibur” and “Omskiy 9” as well as with forage legumes “Sibirskie”, bred specifically for production of high-nutritious haylage.
Source: https://kormoproizvodstvo.ru/en/1-2019-2/, p. 31
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