Agrarian
Bulletin
of the Urals

Russian Journal of Agricultural Research

The publication is registered by the Ministry of the Russian Federation
for Affairs of the Press, Television and Radio Broadcasting and Mass Communication Media.
Registration certificate: PI number 77-12831 on May 31, 2002
Subscription index in catalog «Russian Press» - 16356
ISSN 1997 - 4868 (Print)

The Journal is included in the list of the leading peer-reviewed scientific journals and publications, which should be published by the main results of theses for the degree of doctor and Ph.D.
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Journal is included in the list of VAK (from 25.09.2017), No. 291

ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 09 (115) 2013

Агрономия

Логинов Ю.П. доктор сельскохозяйственных наук, профессор

Дюкова Н. Н. кандидат сельскохозяйственных наук, доцент Государственный аграрный университет Северного зауралья

Шадрина Н. В. кандидат биологических наук Государственный аграрный университет Северного зауралья

УДК:633.31(571.12)

SUBSTANTIATION OF ALFALFA VARIETY MODEL PARAMETERS FOR THE NORTH TRANS-URALS’ CONDITIONS

We have developed a model of varieties for the North Trans-Urals’ conditions having analyzed the results of alfalfa selection in the West and East Siberia and considered the studies of biological properties and economic character of initial and selection materials, their variability and interrelationship of different breeds. The model is based on alfalfa volatile (Medicago varia L.), as it is a perennial herbaceous upright branchy spring crop. It is important that alfalfa forms a strong bush with lots of stems. We will give preference to varieties with upright or inclined stems, 80–105 cm high, branchy, with many first and second branches. At the same time, the number of generative shoots should be 140–150 pcs./m2, and the number of flower clusters per generative shoot is 14–15. The factor limiting the medic crop yield in the North Trans-Urals is its frost-free period. Approximation to the new model will facilitate the development of varieties with a period from spring aftergrowing to flowering (mowing ripeness) — 55–60 days, the second mowing is in 45–50 days. The alfalfa vegetation period (from aftergrowth to seed complete ripeness) is 129–132 days. Now it is the development of alfalfa varieties with self-fertility and auto tripping that are capable for high and stable seed yields is one of the promising areas. Thus, we focus on the level of self-fertility equal to 30–45 % in the North Trans-Urals. It is necessary to enhance vegetative productivity of medic. The variety Omskaya 7 cultivated in the Tyumen region generate herbage crop yield of 12.9 t/ha for two mowings, and the variety Bystraya gives 19.6–25.0 t/ha, it indicates that there are reserves for breeding.

Keywords:

selection, variety, population, alfalfa, herbage crop yield, seed yield


References:

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