New cultivar of red clover Prima

2019 ◽  
Vol 49 (3) ◽  
pp. 41-46
Author(s):  
R. I. Polyudina
Keyword(s):  
Dry Matter ◽  
Red Clover ◽  
West Siberia ◽  
The State ◽  
Hybrid Population ◽  
Forest Steppe ◽  
Average Yield ◽  
Variety Trial ◽  
Green Mass ◽  
Early Ripening

The results of breeding work on creation of the new cultivar of red clover are presented. The hybrid population (15-10-D (2n)) was created by the method of crossbreeding and selection in the conditions of artifi cial climate. Selection of winterhardy high-yielding forms of this hybrid population was conducted in the forest-steppe zone of West Siberia. The population 15-10-D (2n) was tested in three cycles of competitive variety trial (crops of 2006, 2008 and 2010) and was submitted to the State variety testing under the name Prima. According to the results of the competitive variety trial during 2007–2013, the new early-ripening diploid cultivar Prima showed high winter hardiness of 97.0-99.0%. The duration of the growing season is 115 days (on the level of standard early-ripening tetraploid cultivar Meteor). The yield of green mass in two cuts is 19.6-58.7 t/ha, the yield of dry matter is 4.2-13.5 t/ha, the yield of seeds is 276-392 kg/ ha. The average yield of green mass in two cuts of the new cultivar is 38.8 t/ha, the average yield of dry matter is 8.7 t/ha, the average yield of seeds is 317 kg/ha, which exceeds standard cultivar Meteor by 52%. The seed content of Prima cultivar is 52%, Meteor – 38%. The crude protein content in dry matter is 16.1%, the fi ber content is 26.0%. Prima cultivar has been included in the State Register of Breeding Achievements of the Russian Federation to be grown in the West Siberian region since 2019. The copyright certifi cate and patent for the breeding achievement were received.

scholarly journals STUDY OF VARIETIES OF MEADOW CLOVER DIFFERENT TYPES OF RIPENESS

2021 ◽  
Vol 2021 (2) ◽  
pp. 21-30
Author(s):  
Revmira Polyudina ◽  
Mikhail Novoselov
Keyword(s):  
Dry Matter ◽  
Red Clover ◽  
West Siberia ◽  
Hybrid Population ◽  
Early Maturing ◽  
Different Types ◽  
Long Time ◽  
Economically Valuable Traits ◽  
First Time ◽  
Continental Climate

For creating new cultivars of red clover it is necessary to use traditional and modern methods: heterosis and ecological breeding. These methods have been used in breeding for a long time, but it was necessary to modify them to the cultivation of red clover considering its biological features (perennity, length of ve-getation period, winter hardiness) in conditions of harsh continental climate in Siberia. The complex-hybrid population, late maturing, diploid based the cultivar SibNIIK 10 has been created based on best polycross offspring by polycross method in West Siberia. The winter hardy, early maturing, diploid based cultivar has been created as the result of combination together with FWRC FPA for the first time ever in Siberia. The research cites a comparative study of two cultivars of red clover (SibNIIK 10 and Prima) of different types of maturity and ploidy by main economically valuable traits. Early maturing tetraploid based cultivar Prima in herbage and dry matter yield exceeds late maturing cultivar SibNIIK 10 by 9–30 and 17–44% and in seed by 18% (in good years).

ALFALFA VARIETIES ZONED IN THE CENTRAL CHERNOZEM ZONE OF THE RUSSIAN FEDERATION

2020 ◽  
Author(s):  
Galina Stepanova
Keyword(s):  
Medicago Sativa ◽  
Dry Matter ◽  
Maximum Yield ◽  
The State ◽  
Average Yield ◽  
State Register ◽  
Independent Evaluation ◽  
Medicago Sativa L ◽  
Alfalfa Varieties ◽  
Central Chernozem

The article describes the main morphological and biological features of alfalfa varieties included in the State register of breeding achievements approved for use in the Central Chernozem zone of Russia. A total of 32 alfalfa varieties are included in the State register. This is 9 varieties of blue alfalfa (Medicago sativa L. subsp. Sativa) of domestic selection and 8 foreign, 11 varieties of variable alfalfa (Medicago sativa L. nothosubsp. varia (Martyn) Arcang.) domestic selection and 1 variety of foreign and 3 varieties of yellow alfalfa (Medicago sativa L. subsp. falcata (L.) Arcang.). It shows the average and maximum yield of varieties determined in the process of state variety testing, as well as independent evaluation in research institutions in the region. Varieties of blue alfalfa of domestic selection Kevsala, Elena, Satellite, Vavilovskaya Yubileynaya were the most productive. The average yield of dry matter of these varieties reaches 8.4–9.2 t/ha, the maximum — 15.3–17.7 t/ha. Alfalfa varieties Timbale and Galaxy were the most productive among foreign varieties: the average yield of dry matter was 8.1 and 8.3 t/ha, the maximum – 15.5 and 17.2 t/ha. Varieties of alfalfa variable Vitalina and Vela provided an average yield of dry matter of 7.6 and 9.0 t/ha, the maximum yield reached 15.4 and 18.1 t/ha.

scholarly journals Influence of increasing doses of nitrogen on feed productivity of perennial grasses

2019 ◽  
pp. 19-24
Author(s):  
Svetlana Vasil'evna Ivanova ◽  
Olga Vasil'evna Kurdakova ◽  
Aminat Msostovna Konova ◽  
Anna Yurievna Gavrilova
Keyword(s):  
Dry Matter ◽  
The State ◽  
Perennial Grasses ◽  
Nitrogen Fertilizers ◽  
First Year ◽  
Yield Increase ◽  
Green Mass ◽  
State Register ◽  
Second Year ◽  
First Year Of Life

In the course of the experiment, the effect of increasing doses of nitrogen fertilizers on the yield of clover of the meadow variety Nadezhny, entered in the State Register of Breeding Achievements in 2012, was analyzed. A comparison is also made of this influence with the timothy of the meadow variety Leningradskaya 204. It was established that the pre-sowing introduction of mineral nitrogen for clover and timothy has influenced the productivity of these crops, but the nature of this effect varies depending on the type of grass. The introduction of N20 against the background of P30K90, which provided an increase in control of 51.2% for green mass and 33.6% for air-dry matter, was optimal for meadow clover of the first year of life. For grassland clover second year of life, the best option was N0P30K90, which gave an increase of 56.6% to the control on green mass and 50.6% on air-dry matter. A further increase in the dose of nitrogen on the options caused a decrease in yield increase. Timothy meadow for two years of life was traced responsiveness to the provision of nitrogen. The most productive in all respects was the option N120P30K90.    

scholarly journals Agrobiological characteristics of hulless barley cultivars developed at Omsk agrarian Scientific Center

2019 ◽  
Vol 180 (1) ◽  
pp. 38-43 ◽  
Author(s):  
P. N. Nikolaev ◽  
O. A. Yusova ◽  
N. I. Aniskov ◽  
I. V. Safonova
Keyword(s):  
Stress Tolerance ◽  
West Siberia ◽  
The State ◽  
Forest Steppe ◽  
Agricultural Practice ◽  
Seeding Rate ◽  
Scientific Center ◽  
Hulless Barley ◽  
Barley Cultivars ◽  
State Register

Background. An extremely important task today is to develop new hulless barley cultivars, capable of yielding large and high-quality grain harvests, and introduce them into agricultural production. Objective. The purpose was to study three hulless barley cultivars ‘Omsky golozerny 2’, ‘Omsky golozerny 4’ and ‘Maysky’, developed at Omsk Agrarian Scientific Center, in order to describe their agrobiological characteristics.Materials and methods.The experimental part of the work was carried out in 2015–2017 on the experimental fields of Omsk ASC in the southern forest steppe (third crop rotation after the wheat predecessor; fourth crop after fallow). There were 4 replications on the plot of 10 m2. The seeding rate was 4 million viable seeds per 1 ha. Agricultural practice used in the experiments was conventional for West Siberia. Parameters of stability and plasticity were calculated according to Eberhart and Russell, Wricke; adaptability, according to Zhivotkov; homeostasis, according to Khangildin; stress tolerance and compensatory ability, according to Rossielle and Hemblin.Results. Many years of breeding work at Omsk ASC resulted in the development of three hulless barley cultivars: ‘Omsky golozerny 2’ (listed in the State Register of the Russian Federation for regions 9, 10 and 11), ‘Omsky golozerny 4’ (submitted for the State Crop Variety Trials in 2017), and ‘Maysky’ (not included in the State Register). The new hulless barley cultivar ‘Omsky golozerny 4’, considering its higher productivity (+1.36 g to the reference in 1000 grain weight, and +0.73 t/ha to cv. ‘Maysky’), in the yield of nutrients per area unit equaled the reference ‘Omsky golozerny 2’, but exceeded ‘Maysky’ (+47.2 kg/ha of protein, +390 kg/ha of starch, and +42.4 kg/ha of crude fat). ‘Omsky golozerny 4’ was also characterized by stability (stability = 4.8), increased compensatory ability (3.29) and adaptability (103%). There was an increase in productivity with improved growing conditions (ecological plasticity = 1.25). ‘Maysky’ had higher stress tolerance (–1.35), while the reference ‘Omsky golozerny 2’ showed increased homeostasis (0.118). Thus, ‘Omsky golozerny 4’ exceeded the previous two cultivars in adaptability and stability.

scholarly journals PRODUCTIVITY OF MEDIC BINAR GRASS MIXTURE IN RELATION TO MINERAL NUTRITION

2019 ◽  
pp. 133-138
Author(s):  
V. Iu. Listkov ◽  
A. F. Petrov
Keyword(s):  
Mineral Nutrition ◽  
Dry Matter ◽  
Metabolic Energy ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Green Mass ◽  
Positive Tendency ◽  
Nutrient Value ◽  
Digestible Protein ◽  
The Impact

The research explores the relation between productivity of binary grass mixture and mineral nutrition. The hypothesis assumes that nutrient value of the same forage depends on mineral nutrition of forage grasses. According to purpose of research, the authors specified the task which is seen to analyze the impact of mineral fertilizers on productivity and nutrition of forage mass of binary grass mixture sown under the cover. The object of the research is a binary grass mixture based on alfalfa (Medicago + sainfoin). Sowing was carried out under the barley and Sinapis cover on two mineral backgrounds: control (without fertilizers) and fertilized. Fertilizers were applied the day before sowing. Crop yield and the quality of harvested mass were assessed in the appropriate period which was the stage of Medicago budding. Two-year industrial and economic experiment highlighted necessity and efficiency of sowing Medicago binar grass mixtures under Sinapis cover with 25% lower sowing rate and apply mineral fertilizers dosed as N23P60K60 in the forest-steppe of Novosibirsk region. This application contributed to the highest output of metabolic energy in dry matter (37 GJ/ha). The authors observed a positive tendency on harvesting from 1 ha of fodder units (2.14 tons), digestible protein (0.35 tons), as well as the yield of dry (3.58 tons) and green mass (13.7 tons). In this variant the authors observed the highest output of metabolic energy in dry matter (37 GJ/ha). There was a positive tendency to harvest fodder units (2.14 tons), digestible protein (0.35 tons) pro 1 ha and get dry (3.58 tons) and green mass (13.7 tons).

scholarly journals CREATION OF AGROCENOSES OF FODDER CROPS FOR SPRING AND EARLY SUMMER USE IN THE FORESTSTEPPE ZONE OF THE TRANS-BAIKAL TERRITORY

2018 ◽  
Vol 48 (4) ◽  
pp. 43-50 ◽  
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Dry Matter ◽  
Stem Elongation ◽  
Steppe Zone ◽  
Early Summer ◽  
High Yield ◽  
Forest Steppe ◽  
Winter Rye ◽  
Summer Period ◽  
Green Mass ◽  
Digestible Protein

Experimental data on the creation of fodder agrocenoses for the production of green feed in the spring and early summer period is presented. The research was conducted in 2014-2016 in the forest-steppe zone of the Trans-Baikal Territory. The study included winter and spring rye crops and cabbage. It was established that the promising crop that gives the earliest green feed is the winter rye of autumn sowing. It was characterized by a high regrow capacity and formed two yield cuttings in the tillering phase. The yield of green mass was 7.7 t/ha, dry matter – 1.36 t/ha, output of feed units was 1.34 t/ha, the amount of digestible protein – 279 kg/ha. In the phase of stem elongation, the figures were 10.0 t/ ha, 2.17 t/ha, 1.93 t/ha, 287 kg/ ha, respectively; in the earing phase (one cutting) – 9.3 t/ha, 3.30 t/ha, 2.65 t/ha, 287 kg/ha, respectively. Feed biomass was of higher quality when used in the period of tillering, where the content of digestible protein per one feed unit was 206-210 g. The spring sowings of winter rye were inferior to the autumn sowings in the amount of two cuttings in the tillering phase: green mass by 3.3 t/ha, dry matter 0.58 t/ha, feed units 0.58 t/ha, digestible protein 113 kg/ha; in the stem elongation phase: 5.5 t/ha, 1,27 t/ha, 1.15 t/ ha, 168 kg/ha, respectively. Crops of spring rape, oil radish and spring rye are also important, since they allow to obtain a sufficiently high yield in the early summer period. In the budding phase the yield of green mass of cabbage crops was 22.8 and 18.3 t/ ha, dry matter – 2.69 and 2.78 t/ha, feed units – 2.70 and 2.25 t/ha, digestible protein – 648 and 599 kg/ ha; in the flowering phase the figures for oil radish were 21.5 t/ha, 2.56 t/ha, 2.57 t/ha, 499 kg/ ha, respectively. In the tillering phase the figures for spring rye in the amount of two cuttings were 7.3 t/ ha, 1.31 t/ha, 1.11 t/ha, 210 kg/ ha, respectively; in the phase of stem prolongation – 3.8 t/ha, 0.82 t/ ha, 0,87 t/ha, 105 kg/ha, respectively.

scholarly journals THE NEW SAINFOIN VARIETY ‘SHURAVI’, ITS FEED PRODUCTIVITY AND VALUE AS A FORECROP

2019 ◽  
pp. 27-30
Author(s):  
S. A. Ignatiev ◽  
A. A. Regidin
Keyword(s):  
Dry Matter ◽  
Energy Content ◽  
The State ◽  
Medium Size ◽  
Standard Variety ◽  
Family Selection ◽  
Green Mass ◽  
Digestible Protein ◽  
Phosphorus And Potassium ◽  
Variety Testing

The paper discusses the results of long-term research in the competitive variety testing of the sainfoin variety ‘Shuravi’, introduced into the State List of breeding achievements and approved for use in 2019 in the North Caucasus and Nizhne-Volga regions of Russia.The sainfoin variety ‘Shuravi’ is a complex hybrid species obtained by the methods of individual-family selection and polycross followed by massive negative selection. According to the most morphological and biological characteristics, the variety has been assigned to the Transcaucasian species. The plants are of tall height (95-105 cm). The bush is semi-upright (40%), upright (40%) and semi-sprawling (20%). The root system is vertical with a well-defined main root. The stalk is rough, thick and hollow inside. The kernels are of medium size, mainly with spines. 1000 kernel weight is 18–20 g. The vegetation period ‘sprouts – full ripeness’ is 85–90 days, and the mowing ripeness of the green mass is 45–55 days. According to resistance to major diseases, the variety is not inferior to the standard variety ‘Zernogradsky 2’. The productivity of ‘Shuravi’ green mass during the State variety testing was on 9.6% higher than that of the standard variety, dry matter was on 14.7% higher and seed productivity was on 17.6% higher. In the following years of study in a competitive variety testing, the variety ‘Shuravi’ exceeded the standard variety on 10.3% in green mass productivity and on 9.8% in dry matter. According to the yield of fodder units per 1 hectare, raw and digestible protein, the variety exceeded the standard on 17.0, 15.7 and 16.1% respectively. Exchange energy content per 1 kg of dry matter and supply of a fodder unit with digestible protein in the variety ‘Shuravi’ was at the standard level.The use of the sainfoin variety ‘Shuravi’ as a green fertilizer makes it possible to cover fresh standard organic matter on 9.8–14.7% and nitrogen on 1.8–2.4 kg more compared with the standard; the percentage of phosphorus and potassium is the same as with the standard variety ‘Zernogradsky 2’. In general, when using sainfoin green mass as green manure, soil is supplied with much more such basic nutrients as nitrogen, phosphorus and potassium than when applying the same amount of good quality manure. 

The effectiveness of forage production from hybrid alfalfa and red clover under various seeding rates

2021 ◽  
pp. 20-24
Author(s):  
Л.П. Байкалова ◽  
Т.С. Власова
Keyword(s):  
Red Clover ◽  
Production Optimization ◽  
Forest Steppe ◽  
Vegetable Production ◽  
Mass Yield ◽  
Forage Production ◽  
Seeding Rate ◽  
Green Mass ◽  
Perennial Legume ◽  
Green Mass Yield

Полевые опыты проведены в 2017–2020 годах на опытном поле кафедры растениеводства и плодоовощеводства Красноярского государственного аграрного университета в УНПК «Борский» (Сухобузимский район Красноярского края), расположенном в лесостепной зоне. Посев многолетних бобовых трав был проведён в 2017 году. Люцерну гибридную высевали с нормами 5, 10, 15 и 20 кг/га, клевер луговой — с нормами высева 5, 10 и 15 кг/га. Контрольными были нормы высева, рекомендованные в лесостепной зоне Сибири для люцерны гибридной и клевера лугового, — 15 кг/га. Учёты урожайности зелёной массы проведены фазу цветения в 2018–2020 годах. Целью работы являлось определение эффективности производства кормов из люцерны гибридной и клевера лугового при различных нормах высева. Доля влияния нормы высева на урожайность зелёной массы люцерны гибридной составляла 25,8%, клевера лугового — 10,6%. Самый высокий вклад в рост урожайности зелёной массы вносило взаимодействие факторов «норма высева × год». Регулирование нормы высева при любых погодных условиях приводило к высокой реализации адаптивного потенциала многолетних бобовых трав и повышению урожайности зелёной массы. Максимальная урожайность зелёной массы люцерны гибридной получена при высеве с нормой 5 кг/га, клевера лугового — при 15 кг/га. Производство кормов из люцерны гибридной и клевера лугового при всех исследуемых нормах высева являлось рентабельным и экономически эффективным. Использование многолетних бобовых трав для производства зелёной массы при нормах высева, показавших максимальную урожайность, позволило снизить затраты на производство кормов за счёт роста урожайности и снижения себестоимости в сравнении с прочими исследуемыми нормами высева. Лучшей нормой высева люцерны гибридной с экономической точки зрения была норма 5 кг/га с рентабельностью 212,2%, клевера лугового — контрольная норма высева (15 кг/га) с рентабельностью 93,2% The field trial took place at the Department of Crop, Fruit and Vegetable Production of the Krasnoyarsk State Agrarian University in 2017–2020. Perennial legume grasses were planted in 2017. Seeding rates of hybrid alfalfa were 5, 10, 15 and 20 kg ha-1, red clover — 5, 10 and 15 kg ha-1. Seeding rates recommended for Siberian forest-steppe were considered as standard — 15 kg ha-1. Green mass yield was calculated at flowering stage in 2018–2020. The research aimed at testing the effectiveness of forage production from alfalfa and clover under various seeding rates. Only 25.8% of alfalfa productivity and 10.6% of clover yield resulted from the effect of seeding rate. Seeding rate–year interaction had the highest impact on green mass production. Optimization of seeding rate led to higher crop adaptability and green mass yield regardless of weather conditions. The highest green mass productivity of alfalfa happened under the seeding rate of 5 kg ha-1, red clover — 15 kg ha-1. Fodder production from both hybrid alfalfa and clover was economically effective regardless of seeding rate. Perennial legume grasses decreased costs for feed production due to their yield increase and lower prime costs under the most effective seeding rates. The alfalfa seeding rate of 5 kg ha-1 was the most profitable, the payback amounted to 212.2%. Seeding 15 kg ha-1 of red clover resulted in payback of 93.2%

scholarly journals BREEDING OF CREEPING CLOVER IN THE FOREST-STEPPE CONDITIONS OF THE MIDDLE VOLGA REGION

2021 ◽  
Vol 16 (4) ◽  
pp. 55-60
Author(s):  
Ol'ga Timoshkina ◽  
Oleg Timoshkin
Keyword(s):  
Dry Matter ◽  
Perennial Grasses ◽  
Volga Region ◽  
Forest Steppe ◽  
Middle Volga Region ◽  
High Productivity ◽  
Green Mass ◽  
Middle Volga ◽  
Digestible Protein ◽  
Number Of Seeds

The article presents the data of assessing the productivity and nutritional value of selection samples of creeping clover in the nursery of the competitive variety testing of 2016 sowing for three years of use. The purpose of the research is to identify a promising breeding material of creeping clover for creating a variety with high productivity of green mass and seeds, suitable for mechanized harvesting of seeds for the conditions of the forest-steppe of the Middle Volga region. The research was carried out in 2017-2019 on the experimental field of a separate subdivision of Penza FGBSI FSC of BC in accordance with the methodological instructions for the selection of perennial grasses. On average over three years of use in terms of the yield of green mass – 15.00-16.44 t/ha, cultivar samples of creeping clover V-92, Yu-90, P-97, Pl-90-4 significantly exceeded the VIK-70 standard (14,01 t/ha) by 7.1-17.3%, for the collection of dry matter – 3.49-3.97 t/ha varieties V-92, Yu-90, P-97 and Pl-90-3 reliably exceeded the standard (3.29 t/ha) by 6.1-20.7%, in the collection of digestible protein – 0.44-0.49 t/ha, the varieties B-92 and P-97 exceeded the standard (0, 40 t/ha) by 10.0-22.5%. Maximum values of the yield of green mass (16.44 t/ha), dry matter collection (3.97 t/ha), digestible protein (0.49 t/ha), feed units (5.04 t/ha) and exchange energy (49.12 GJ/ha) on average for the years of testing showed the sample P-97. This specimen significantly exceeded the standard in terms of structural elements and seed yield by 50.5%, in the height of leaf petioles by 3.5% and peduncles by 2.5%, which is important for mechanized harvesting of seeds. When selecting for the productivity of creeping clover, one should pay attention to the signs associated with the yield of green mass and seeds. The length of leaf petioles correlates with the length of peduncles (r = 0.78), the number of seeds in the head (r = 0.46), the number of inflorescences in the head (r = 0.47), with the collection of dry matter (r = 0.31). The length of the peduncles correlates with the collection of dry matter (r = 0.30), with the number of inflorescences in the head (r = 0.54), and with the number of seeds in the head (r = 0.51). The number of inflorescences in the head correlates with the number of seeds in the head (r = 0.61) and with the yield of seeds (r = 0.31)

scholarly journals The best diploid varieties of red clover Smolensk breeding

2020 ◽  
Vol 196 (5) ◽  
pp. 2-10
Author(s):  
O. Kurdakova ◽  
Svetlana Ivanova ◽  
Aminat Konova
Keyword(s):  
Dry Matter ◽  
Red Clover ◽  
Winter Hardiness ◽  
Practical Significance ◽  
Optimal Timing ◽  
Green Mass ◽  
The North ◽  
Leaf Yield ◽  
Central Regions ◽  
Percentage Yield

Abstract. The purpose of the research is to conduct a comparative assessment of the variety numbers (height, yield of green mass and air-dry matter, percentage of leaf content, leaf yield) and identify the most productive for creating new varieties. The object of research was 2 variety numbers (A-44 and S-434) as the most productive, in comparison with the standard zoned variety of meadow clover Smolenskiy 29 in the conditions of a relatively aligned background of mineral nutrition, optimal density of standing herbage from the first stages of selection, optimal timing of sowing and timely care and harvesting. Observations and accounting were performed according to generally accepted methods. Results and practical significance. The article presents the results for 2009–2010 and 2012–2013 on economically valuable indicators of promising cultivars of meadow clover: winter hardiness, duration of the growing season, height, leafage percentage, yield of green mass, air-dry matter, yield of leaves and seeds. In the competitive variety testing, the best indicators were demonstrated by the A-44 and S-434 variety numbers, whose growing periods were shorter by 8 and 16 days, respectively, of the standard variety. Variety numbers had high winter hardiness (95.3 % and 97.4 %), yield of green mass at the level of 54.5 and 64.8 t/ha, air-dry matter – 12.5 and 14.3 t/ha, seeds – 2.6 and 2.9 c/ha, leafiness (48.4–49.2 %), leaf yield was 4.5 and 4.7 t/ha, the content of raw protein in the dry matter of plants – 17.10 and 17.3 %. The profitability of cultivation for seeds was 61.8 % and 42.2 %, while the lowest cost of harvesting for green mass was observed (462.6 and 452.1 rub.). Scientific novelty. For the North-Western and Central regions of the Russian Federation, models of varieties have been developed that differ in a complex of economically valuable features and properties.

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