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Registration Number

0221U101772, 0119U002095 , R & D reports

Title

To improve the agrocenoses of the pasture-haying using from introduced drought-resistant perennial grasses and rarely spread forage plants for improving the degenerate natural forage lands of the arid Steppe

Head

Hratylo Oleksandr D., Кандидат сільськогосподарських наук

Registration Date

25-01-2021

Organization

MF Ivanov Askania-Nova Institute of Steppe Animal Husbandry - National Scientific Breeding and Genetics Center for Sheep Breeding

Description

The object of research is introduced drought-resistant perennial grasses and less widespread forage plants of the steppe ecotype in agrocenoses of pasture and hayfields to improve the degenerate natural forage lands. on the basis of studying the growth and development of perennial grasses characteristics by morphological characteristics and forage productivity, to select the most promising of them for creating high-performance models of agrophytocenoses for pasture and hay production. The most promising models of agrophytocenoses have been identified, it is Psathyrostachys juncea (Fisch.) Nevski, Dactylis glomerata, average Vitas wheatgrass (Elytrigia intermedia (Host) Nevski), middle Vitas wheatgrass and their mixtures with white sweet clover Aeneas. The ratio of the cereal-legume component in the period of pasture ripeness was 21-35%, cereals and legumes 79-65%, and in the period of hay ripeness - 17-32% of cereals and 83-68% of legumes. Single-species and compatible crops ensured the yield of green mass 18.9-142.4 c / ha with a dry matter yield of 5.8-38.0 c / ha, feed units - 4.1-26.2 c / ha and digestible protein - 0.54-3.41 c / ha. The highest performance indicators were noted on grass stands with medium wheatgrass in single-species and joint crops with middle Sarmatian wheatgrass (Elytrigia elongate (Host) Nevski), Dactylis glomerata and Onobrychis arenaria in single-species and sandy Sainfoin Emerald. - 119.6 and 142.4 c / ha of green mass with a yield of 33.5 and 38.0 c / ha of dry matter, 20.5 and 26 2 c / ha of feed units, 3.11 and 3.41 c / ha of digestible protein. The investigated herbage provided the collection of hay 16.5-54.3 c / ha. The level of profitability of grass stands with medium wheatgrass for pasture use was 150.7-167.9%, for hay use - 122.1-211.2%. The most promising in terms of forage productivity are agrocenoses with medium wheatgrass Vitas and its mixtures with white melilot Aeneas.

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Gratylo Oleksandr D
Petrychuk Leonid I
Smienova Halyna S
Stolbunenko Serhii H