Effect of Different Methods of Sod Layer Improvement on Phytocenosis of Southern Chernozems in the Steppe Zone of Akmolinsk Region

Mozhaev Nikolai Ivanovich, Kurishbayev Akhylbek Kazhigulovich, Serekpaev Nurlan Amangeldinovich, Stybaev Ghani Zhasymbekovich and Khurmetbek Oktyabr

“S.Seifullin Kazakh Agrotechnical University” Republic of Kazakhstan, 010000 Astana, 62 Pobeda Avenue.

DOI : http://dx.doi.org/http://dx.doi.org/10.13005/bbra/1521

ABSTRACT:

This article submits results of a study of degraded grasslands improvement. During the study when herbage mixtures hadn’t been seeded, the first treatment of a sod layer of low-yeilding degraded grassland plots with disk tillers provided the increase of herbage up to 1.0 tons/ha and of hay up to 0.3 tons/ha. In comparison with the control sample direct seeding of herbage mixtures in the sod layer allows improvement of the yield of herbage from 1.3 up to 9.5 tons/ha and of hay from 0.9 to 2.4 tons/ha.The maximum yield increase has been obtained by seeding herbage mixtures after the first treatment of the sod layer: yield of herbage has increased from 3.5 up to 10.9 tons/ha and yield of hay – from 0.7 up to 2.8 tons/ha. In comparison with the control sample, the two-component legume-grass mixture of medic and awnless brome has given the maximum yield increase among the studied components of certain herbage mixtures.

KEYWORDS: hayfields; grasslands; simplificated improvements; permanent grass; complex and simple herbage mixtures.

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