The Promising Variety of Alfalfa (Medicago Polymorpha) “Golubka”

Introduction. Developing a method for energy-efficient grinding of fibrous vegetable raw materials to avoid the clogging of grids remains an urgent task. The aim of the research is to study the process of grinding dried fibrous plant materials and to estimate the influence of the device operating characteristics on the quality of grinding and the process energy intensity. Materials and Methods. The experimental apparatus is a rotor grinder. Its working bodies are alternate knives and hammers. When a hammer is in motion, its triangle side creates the reduced pressure area. There was studied the influence of the linear velocities of knife motion and of feed of raw materials on fractional composition of the grinded materials, grinder productivity, and grinding specific energy capacity. Results. It is found that the change in the fractional composition of the grinded product occurs when the speed of the rotor knives increases. Optimal range of knife speed for producing the product of the required fractional composition is 55‒75 m/s. The increase in the speed leads to increasing productivity, but is accompanied by the growth of specific power intensity. If the rotor speed is constant, the increase of raw material feed increases the grinder productivity, but only up to a certain value. After that, the productivity decreases because of excessive filling of the working chamber with raw materials and clogging of the grates. For each value of the knife speed, there is an optimal feed that ensures the maximum productivity. High values of knife speed lead to significant energy intensity of the process and overgrinding of raw materials. Therefore, the optimal range of knife speed is 55‒65 m/s. Discussion and Conclusion. Effective grinding of raw materials is achieved through lower energy capacity of grinding process and absence of grate clogs resulted from separating particles from the surface of plants to be grinded.

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Experimental Data of Grinding Dried Fibrous Plant Materials

Braginets

Бахчевников

Alferov

2021

Engineering Technologies and Systems

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The main results of breeding and seed production of perennial grasses on the Don area in 2010–2020

Игнатьев

Регидин

Грязева

et al. 2020

Zernovoe hozâjstvo Rossii

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The current paper has presented an overview of the work of the laboratory for breeding and seed production of perennial grasses of the ARC “Donskoy” over a ten-year period. There has been presented a brief history of the development of the laboratory from the moment of its establishment to the present day. The main purpose of the work in this period was the breeding, reproduction, introduction into production of the new alfalfa and sainfoin varieties with a wide range of resistance to various stress factors with high productivity of forage and seeds. In the collection farms of alfalfa there have been tested and agro biologically estimated more than 600 varieties from the world collection of VIR, other research institutions and local hybrids. Based on this work there have been developed an initial material with a wide variability of economically-biological useful characters using the methods of hybridization and selection. The best lines and hybrids were included in the complex hybrid populations, which became the basis for the development of the new alfalfa varieties ‘Selyanka’ (2013) and ‘Golubka’ (2019). Throughout the history of the laboratory, great attention was paid to the development of the new sainfoin varieties, as a result of which there were zoned such varieties as ‘Severokavkazky dvuukosny’ (1947), ‘Zernogradsky 2’ (1998), ‘Zernogradsky 3’ (2001), ‘Atamansky’ (2004), ‘Veles’ (2010). Over the past ten years, there were developed the sainfoin varieties ‘Sudar’ (2013) and ‘Shuravi’ (2019) protected by a patent, the varieties undergone the State Variety Testing, were included into the State List of Breeding Achievements approved for use in several regions of the Russian Federation. There has been given a brief description of the current problems of breeding and primary seed production of perennial grasses, as well as the directions of the laboratory's work to solve them. There has been presented the publication activity of the researchers of the laboratory.

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Analysis of promising alfalfa populations according to feed productivity in the conditions of the Trans-Volga area in the Saratov region

Popova

2022

Zernovoe hozâjstvo Rossii

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In the extreme climatic conditions of the steppe area of the Saratov region, one of the primary factors in improving alfalfa productivity are the new highly productive and adaptive varieties. The purpose of the current study was to identify the most promising populations according to feed productivity for the development of new highly productive alfalfa varieties in the conditions of the Trans-Volga area in the Saratov region. The zoned blue alfalfa variety ‘Yuzen’ was used as the standard variety. The variety was included in the State List in 2006 for the Middle Volga and Lower Volga regions. The plot of the Competitive Variety Testing was sown in the spring with the SKS-6-10 seeder in wide rows with a 70 cm of row spacing in six repetitions. The plots were two-row, with an area of 18 m2. Green mass productivity was accounted from the plot (t/ha) in the period ‘bud formation-early bloom’ in the first and subsequent cuttings by hand, in two repetitions per 1 m2 of plot. On average, the amount of productivity of the studied samples was 20.3–23.1 t/ha. The population 6/14 showed the smallest productivity (20.3 t/ha). The largest productivity increase was produced by the populations 7/16, 5/12 and the new variety ‘Virineya’. They exceeded productivity of the standard variety on 1.6–2.2 t/ha. The rest populations also slightly exceeded productivity of the standard variety on 0.2–0.3 t/ha. The maximum productivity of feed units was found in the population 7/16, 1/07 and the variety ‘Virineya’ and it amounted to 4.6–4.9 f.u., t/ha. The minimum one was established in the population 5/08 (4.1 f.u., t/ha). According to crude protein percentage, on average during 2 years of the study, the maximum indicator was shown by the population 5/08, which was on 5.50 more than that of the standard variety.

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The Promising Variety of Alfalfa (Medicago Polymorpha) “Golubka”

Cited by 3 publications

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Experimental Data of Grinding Dried Fibrous Plant Materials

Experimental Data of Grinding Dried Fibrous Plant Materials

The main results of breeding and seed production of perennial grasses on the Don area in 2010–2020

Analysis of promising alfalfa populations according to feed productivity in the conditions of the Trans-Volga area in the Saratov region

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