The Role Of Perennial Grasses In The Protection Of Soil Resources Of Erosive Ecosystems With Active Development Of Linear Erosion

Abstract We evaluated the stability of perennial legume and cereal grass species in artificial plant communities on permanent anti-erosion watercourses in the agroecosystems of the Belgorod region with active development of linear soil erosion. In the conditions of steppe and forest-steppe zones of the Belgorod region on permanently grassed watercourses in 2017-2019. varieties of perennial leguminous and cereal grasses: ‘Krasnoyaruzhskaya 1’ and ‘Krasnoyaruzhskaya 2’ (Medicago varia), ‘Kazatsky’ (Trifolium pratense), ‘Olshanka’ and ‘Ivica’ (Festuca arundinacea), ‘Streletsky’ and ‘Stepnyak’ (Lolium perenne)) obtained using local genetic material were studied. All varieties showed their resistance in agro-ecosystems with active development of linear erosion in the forest-steppe and steppe zones. Projective cover on watercourses in the steppe zone in all variants of experience was on average 83,4 %, in the forest-steppe zone - 86,3 %. In the third year of the tests on permanently irrigated watercourses in the steppe zone, the share of cereal and legume grass species was quite high and varied from 88 % in the variant M. varia + Onobrychis arenaria to 92 % in the variants M. varia + Bromopsis inermis and O. arenaria. In the forest-steppe zone, the share of cereal and legume grass species varied from 86 % in the variant L. perenne to 94 % in the variant L. perenne + B. inermis.

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Formation of botanical composition of clover cereal and alfalfa cereal crops agrophytocenoses depending on sowing method

Agrobìologìâ ◽

10.33245/2310-9270-2020-157-1-160-168 ◽

2020 ◽

pp. 160-168

Author(s):

I. Senyk

Keyword(s):

Festuca Arundinacea ◽

Global Climate ◽

Phleum Pratense ◽

Grass Species ◽

Cereal Crops ◽

Forest Steppe ◽

Botanical Composition ◽

Cross Sectional ◽

Row Crops ◽

Adverse Weather

Botanical composition of grasses is one of the most important indicators the biological value and quality of the obtained hay and pasture forage, the longevity of hayfi elds and pastures depend on. The issue of changing the botanical composition of agrophytocenoses is especially important in the context of global climate change, which in recent decades is also manifested in the territory of Ukraine, as it is possible to establish the most adapted species of legumes and cereals to adverse weather conditions and to identify eff ective technological methods of managing these processes for maximum conservation economically valuable species in the herbage. The purpose of the research is to establish the infl uence of diff erent ways of sowing of clover and alfalfa cereal crops agrophytocenoses on the formation of their botanical composition. Field studies have established diff erent eff ects of conventional in-line, cross-section and cross-sectional methods of sowing on the formation of botanical composition of grass mixtures of clover meadow (Trifolium pratense) varieties Sparta and Pavlyna with timothy meadow (Phleum pratense) and fenugreek multifl oral (Lolium multifl orum) and of agrophytocenoses of alfalfa of Sinyukha and Seraphima sowing varieties with reed fire (Festuca arundinacea Schreb) and middle wheatgrass (Elytrigia intermedia). For the average of four years of life of clover and alfalfa cereal crops agrophytocenoses, the highest proportion of legume component was observed with split-cross sowing – 51.6 % for Sparta, 53.1 % for Pavlyna, 60.3 % for Seraphima and 61.6 % for the Sinyukha variety. In the fourth year of life (the third year of use) of sowed leguminous-cereals agrophytocenoses, the preservation of the legume component was 14.6–15.5 % in clover-cereals grass mixtures with the Sparta variety and 16.0–16.8 % with the Pavlyna variety. In alfalfa grasslands, these indicators were 54.0–55.1 % with Seraphim and 55.0–56.2 % with Sinyukha. Among the studied varieties of clover meadow and alfalfa sowing proved better in the conditions of the Forest Steppe of western Pavlyna and Sinyukha. Cross-sectional and divided cross-sectional sowing of legumes and cereals mixtures proved to be better compared to conventional row crops in terms of conservation of economically valuable grass species. Key words: agrophytocenosis, botanical composition, clover meadow, alfalfa sowing, sowing methods.

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Sources of valuable traits for perennial grass breeding

Genetičnì resursi roslin (Plant Genetic Resources) ◽

10.36814/pgr.2021.28.08 ◽

2021 ◽

pp. 78-89

Author(s):

LZ Baistruk-Hlodan ◽

MM Кhomiak ◽

HZ Zhapaleu

Keyword(s):

Festuca Arundinacea ◽

Trifolium Pratense ◽

Perennial Grass ◽

High Energy ◽

Phleum Pratense ◽

Perennial Grasses ◽

Starting Material ◽

Forage Production ◽

Daily Growth ◽

Galega Orientalis

Aim. The purpose was to identify collection accessions – sources of valuable traits to use as starting material for creating varieties of perennial grasses in Western Ukraine. Results and Discussion. Perennial grasses play an essential role in improving the efficiency of forage production. They produce a fodder mass that contains major macro- and micronutrients, minerals, vitamins, amino acids, and other nutrients in available forms, with a high energy protein saturation. Practice shows that due to the introduction of varietal crops into production in combination with optimal technologies of their cultivation, which allows revealing the potential of each variety, it is possible to additionally obtain 20-30% higher yields of fodder mass annually and harvest 2 to 3-fold seed yields. In 2016-2020, a search was carried out and 570 new accessions of perennial grasses were recruited, of which 201 were legumes and 369 were graminaceous grasses. The collection contains 1,319 accessions, of which 232 are Trifolium pratense L., 115 are Trifolium repens L., 49 are Trifolium hybridum L., 107 are Lotus corniculatus L., 80 belong to other legume species (Medicago, Galega orientalis L. Galega orientalis L. and Trifolium species), 131 are Phleum pratense L., 187 are Dactylis glomerata L., 146 are Lolium perenne L., 53 are Arrhenatherum elatius (L.) J. et C.Presl., 67 are Festuca rubra L., 28 are Festuca trachyphylla L., 32 are Bromopsis inermis (Leyss.) Holub, 92 belong to other species of other types of graminaceous grasses (Festuca pratensis Huds., Festuca arundinacea Schreb., Agrostis alba L. etc.). Accessions that enter the Department are registered and sown for propagation in the field. After examination, valuable accessions are transferred to the National Depository and registered in the National Catalogue; the rest of the obtained seeds are used in working collections. Conclusions. The best collection accessions were identified by a set of economically valuable traits: sources of daily growth of shoots (30), winter hardiness (28), plant height (22), yield of green mass upon haymaking (28) and pasture (19) use, forage productivity (15), seed productivity (25), foliage (21), and disease resistance (23). They can be recommended as starting material to create varieties of perennial grasses with high yields of forage mass and seeds for various applications.

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The search for alternative temperate perennial pasture species for low to medium rainfall environments in Tasmania

NZGA: Research and Practice Series ◽

10.33584/rps.16.2016.3239 ◽

2016 ◽

Vol 16 ◽

pp. 275-279

Author(s):

E.J. Hall ◽

R. Reid ◽

B. Clark ◽

R. Dent

Keyword(s):

Perennial Grass ◽

Dactylis Glomerata ◽

Red Clover ◽

Perennial Grasses ◽

Grass Species ◽

Sheep Grazing ◽

Cool Temperate ◽

Perennial Legume ◽

Perennial Legumes ◽

Pasture Plants

In response to the need to find better adapted and more persistent perennial pasture plants for the dryland pastures in the cool-temperate low to medium rainfall (500-700 mm) regions, over 1000 accessions representing 24 species of perennial legumes and 64 species of perennial grasses, were introduced, characterised and evaluated for production and persistence under sheep grazing at sites throughout Tasmania. The work has identified four alternative legume species in Talish Clover (Trifolium tumens). Caucasian Clover (T. ambiguum), Stoloniferous Red Clover (T. pratense var. stoloniferum), Lucerne x Yellow Lucerne Hybrid (Medicago sativa x M.sativa subsp. falcata); and two grass species in Coloured Brome (Bromus coloratus) and Hispanic Cocksfoot (Dactylis glomerata var hispanica). Keywords: persistence, perennial grass, perennial legume

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The response to moisture and defoliation stresses, and traits for resilience of perennial grasses on the Northern Tablelands of New South Wales, Australia

Australian Journal of Agricultural Research ◽

10.1071/ar02185 ◽

2003 ◽

Vol 54 (9) ◽

pp. 903 ◽

Cited By ~ 17

Author(s):

S. P. Boschma ◽

M. J. Hill ◽

J. M. Scott ◽

G. G. Rapp

Keyword(s):

Festuca Arundinacea ◽

Plant Biomass ◽

Nitrogen Concentration ◽

Perennial Grass ◽

Basal Area ◽

Perennial Grasses ◽

Rooting Depth ◽

Grass Species ◽

Severe Drought ◽

Moderate Drought

A field experiment was conducted to study the effects of defoliation and moisture stresses on perennial pasture grasses and to identify traits associated with their resilience. The experiment, conducted near Armidale on the Northern Tablelands of NSW, studied 4 introduced perennial grass species (Phalaris aquatica, Festuca arundinacea, Dactylis glomerata, and Lolium perenne) and 2 native grass species (Microlaena stipoides and Austrodanthonia richardsonii) subjected to 3 moisture regimes (non-stress moisture, moderate drought, and severe drought) and 2 defoliation intensities (severe and moderate). Basal area, herbage mass, phenological growth stage, nitrogen concentration, root mass, and rooting depth were compared over 2 independent 6-month periods: spring–summer (1 September 1994–28 February 1995) and summer–autumn (1 December 1994–31 May 1995). Multiple regression was used to determine which traits were important for determining plant resilience.The differences between species and their respective responses were evident in the traits measured. In general, basal area tended to increase over summer and show little change during autumn. Severe defoliation stimulated plant growth, resulting in higher harvested herbage mass than from those moderately defoliated. Reproductive development was suppressed by severe drought and reduced by moderate drought. Severe defoliation suppressed flowering of Dactylis and Lolium at both drought intensities, compared with moderate defoliation. Phalaris, Festuca, and Austrodanthonia were the deepest rooting species during spring–summer, and Dactylis the shallowest. All species had similar rooting depths during summer–autumn, with those under severe and moderate drought having the deepest and shallowest rooting, respectively.Carbohydrate reserves and basal area were important traits for determining plant resilience during spring–summer. During summer–autumn, maintaining basal area and plant biomass through moderate grazing was important for resilience.

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Complex Geochemical Characteristics of Soils and Plants in Natural Reserve Zones of Ukraine

Geochemistry and ore formation ◽

10.15407/gof.2021.42.012 ◽

2021 ◽

pp. 12-24

Author(s):

N.O. Kryuchenko ◽

◽

Ya. Zhovinsky ◽

P.S. Paparyga ◽

O.A. Zhuk ◽

...

Keyword(s):

Pinus Sylvestris ◽

Quercus Robur ◽

Humus Content ◽

Mixed Forest ◽

Steppe Zone ◽

Perennial Grasses ◽

Forest Steppe ◽

Forest Zone ◽

Natural Reserve ◽

Mobile Forms

The results of a comprehensive analysis of the microelement composition of soils — B, Co, Cu, Mn, Mo, Ni, Zn and plants — Ag, Co, Cu, Mn, Mo, Ni, Pb, Zn (oak (Quercus robur L.), pine (Pinus sylvestris L.) perennial grasses — Kupena (Polygonatum multiflorum (L.) All.), wheatgrass (Elymus repens (L.) Gould)) of natural reserve belonging to different physical and geographical zones — Polessky reserve (mixed forest zone), Roztochya reserve (broad-leaved forest zone), Kanevsky reserve (forest-steppe zone), the reserve «Askania Nova» (steppe zone), the Chernogorsk massif of the Carpathian Biosphere Reserve (KBR, Ukrainian Carpathians), which are proposed to be considered as background. It was found that in the soils of mixed and broad-leaved forests and the Chernogorsk massif KBR with an increase in the content of gross forms of Co, Cu, Ni, Zn, the content of their mobile forms increases, this dependence is inverse in the soils of the steppe zone, which is associated with a decrease in soil acidity and mobility microelements A positive correlation was revealed between the humus content in soils and Zn, Co (gross and mobile forms) and negative — B, Mo in the soils of all reserve zones. It was found that the greatest biogeochemical activity is characteristic of plants in the zone of deciduous forests — oak leaves (Quercus robur L.) and pine needles (Pinus sylvestris L.).

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The role of variety and forecrop in the population dynamics of Rhizoctonia solani in soil

Siberian Herald of Agricultural Science ◽

10.26898/0370-8799-2021-1-3 ◽

2021 ◽

Vol 51 (1) ◽

pp. 25-32

Author(s):

A. A. Malyuga ◽

N. S. Chulikova

Keyword(s):

Population Dynamics ◽

Rhizoctonia Solani ◽

Growing Season ◽

Steppe Zone ◽

Climatic Conditions ◽

Forest Steppe ◽

The Difference ◽

Two Peaks

Long-term studies (2014–2019) of the population dynamics of the fungus Rhizoctonia solani Küch. were carried out in the soil on the Purple Majesty, Vitelotte and Fioletovy potato varieties and preceding crops (potatoes, oats and tendergreen). The study was carried out in Novosibirsk region in the soil and climatic conditions typical of the forest-steppe zone of Western Siberia. To study the peculiarities of R. solani fungus population dynamics in potato plantations, soil samples were taken from under the plants during the entire growing season. The accumulation of rhizoctonia propagules in the soil was determined using the method of multiple soil pellets. The difference in the amount and rate of accumulation of the fungus R. solani on different varieties, as well as the influence of previous crops on this process, was established. Two peaks of the fungus accumulation were observed on the Purple Majesty variety: the first (48.7 propagules/100 g of soil) – during the full germination period, the second (57.2 propagules/100 g of soil) – at the end of the crop maturation phase. One peak was observed in the population dynamics of the fungus on Vitelotte and Fioletovy varieties, at the end of the ripening period (59.0 and 49.1 propagules/100 g soil, respectively). The smallest amount of R. solani fungus in the soil on average during the growing season was noted on the Fioletovy variety – 33.3 propagules/100 g of soil. In the Purple Majesty and Vitelotte varieties, this figure was 41.5 and 40.4 propagules/100 g of soil, respectively. When potato variety Agata was cultivated as monoculture, there was a rapid and significant accumulation of the fungus R. solani in the soil (from 34.6 to 126.8 propagules/100 g of soil). When this variety was cultivated following tendergreen or oats, the amount of the pathogen varied to a lesser extent (25.1–52.2 and 19.8–41.0 propagules/100 g of soil, respectively). No sharp increases in the number of propagative structures of the phytopathogen in the soil were noted.

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Branching of tillers in some grasses

Acta Agrobotanica ◽

10.5586/aa.1981.004 ◽

2013 ◽

Vol 34 (1) ◽

pp. 53-67

Author(s):

Leontyna Olszewska ◽

Maria Wielicka

Keyword(s):

Cross Section ◽

Festuca Arundinacea ◽

Lolium Multiflorum ◽

Phleum Pratense ◽

Grass Species ◽

Holcus Lanatus ◽

Starting Point ◽

Formation Conditions ◽

Arrhenatherum Elatius

In investigations on the grass regeneration biology a special attention was paid to the formation of aerial tillers and branching pseudostolons in Dactylis glomerata L., Festuca arundinacea Schreb., Festuca pratensis Huds., Festuca rubra L., Phleum pratense L., Lolium multiflorum Lam., Lolium perenne L., Phalaris arundinacea L., Arrhenatherum elatius (L.) P. B., Holcus lanatus L., Agropyron repens (L.) P. B., Avenastrum pubescens (Huds) Opiz and Agrostis alba L. Aerial tillers, vegetative short ones and with partly elongated internodes as well as generative tillers formed in tufted and rhizomatous grasses. Parental raised tillers, on which aerial tillers developed, had the anatomical structure specific for grass stems. In tufted grasses, moreover, parental branching pseudostolons developed; in their cross section the arrangement of tissues specific for stolons was observed. They constituted the starting point for agglomerations of new plants rooting in soil, contrary to raised tillers. In some grass species, beside pendant roots, shorter roots grew at the base of aerial tillers; they surrounded with a ring the parent shoot in the node, thus reinforcing the connection of aerial tillers with the stem. An attention was paid to the favourable role of branching pseudostolons in the sward thickness formation. Conditions of the arrangement of tissues in the stem cross section, owing to which the rhizomatous form is developed, are discussed. The fertilization with compost or the covering with sand results in the formation of tillers resembling pseudorhizomes.

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Mg-Rich Authigenic Carbonates in Coastal Facies of the Vtoroe Zasechnoe Lake (Southwest Siberia): First Assessment and Possible Mechanisms of Formation

Minerals ◽

10.3390/min9120763 ◽

2019 ◽

Vol 9 (12) ◽

pp. 763

Author(s):

Andrey Novoselov ◽

Alexandr Konstantinov ◽

Artem Lim ◽

Katja Goetschl ◽

Sergey Loiko ◽

...

Keyword(s):

Steppe Zone ◽

Solute Concentration ◽

Forest Steppe ◽

Bacterial Cells ◽

Authigenic Carbonates ◽

Sedimentary Environments ◽

Exopolymeric Substances ◽

Carbonate Formation ◽

Mechanisms Of Formation

The formation of Mg-rich carbonates in continental lakes throughout the world is highly relevant to irreversible CO2 sequestration and the reconstruction of paleo-sedimentary environments. Here, preliminary results on Mg-rich carbonate formation at the coastal zone of Lake Vtoroe Zasechnoe, representing the Setovskiye group of water bodies located in the forest-steppe zone of Southwest Western Siberia, are reported. The Setovskiye lakes are Cl−–Na+–(SO42−) type, alkaline, and medium or highly saline. The results of microscopic and mineralogical studies of microbialites from shallow coastal waters of Lake Vtoroe Zasechnoe demonstrated that Mg in the studied lake was precipitated in the form of hydrous Mg carbonates, which occur as radially divergent crystals that form clusters in a dumbbell or star shape. It is possible that hydrous Mg carbonate forms due to the mineralization of exopolymeric substances (EPS) around bacterial cells within the algal mats. Therefore, the Vtoroe Zasechnoe Lake represents a rare case of Mg-carbonates formation under contemporary lacustrine conditions. Further research on this, as well as other lakes of Setovskiye group, is needed for a better understanding of the possible role of biomineralization and abiotic mechanisms, such as winter freezing and solute concentration, in the formation of authigenic Mg carbonate in modern aquatic environments.

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Agrotechnical methods ofreducing root rot for cultivating spring wheat in organic farming

E3S Web of Conferences ◽

10.1051/e3sconf/202016101102 ◽

2020 ◽

Vol 161 ◽

pp. 01102

Author(s):

Alfia Razina

Keyword(s):

Spring Wheat ◽

Root Rot ◽

Arable Land ◽

Steppe Zone ◽

Organic Fertilizers ◽

Forest Steppe ◽

New Variety ◽

Wheat Cultivation ◽

New Varieties

Energy-saving technologies of wheat cultivation limit the buffer role of the agrotechnical method in reducing the spread of root rot. This situation calls for using increased volumes of pesticides in order to decrease harvest losses arising from actions of harmful organisms, which does not allow to produce organic food.Considering this, evaluation of the efficiency of agrotechnical methods of cultivating spring wheat aimed at enhancing phytosanitary conditions of crops is very important. The goal of our work was to evaluate the role of predecessors, methods of soil preparation,organic fertilizers, new varieties of spring wheat, and the timing of planting in limiting the spread and reducing the harmfulness of root rot. Our study has been conducted in the forest-steppe zone of Eastern Siberia. We have established that green manure in crop rotationandfallow arable land with introduction of 30 t/ha of organic manure fertilizer with a disc harrow to a depth of 10–12 cmreduce the spread and severity of root rot and increase wheat yields. In the plantings of the new variety of spring wheat Marsianka, the spread of the disease was reliably less,and the yield was higher compared to the control variety Tulunskaya 11. The optimal planting date for the average of two years was May 25, the crops planted then compared to those planted on May 30 were 9.4% less affected by the disease and gave a reliable increase in the harvest of 0.15 tons/ha. Our studies have shown that during production of organic wheat we can limit the spread andharmfulness of root rot withagrotechnical methods.

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Peculiarities of successional processes taking place in artificial phytocenoses on the Kuzbass coal mining dumps

BIO Web of Conferences ◽

10.1051/bioconf/20191600015 ◽

2019 ◽

Vol 16 ◽

pp. 00015

Author(s):

Tatiana Lamanova ◽

Natalia Sheremet ◽

Vladimir Doronkin

Keyword(s):

Coal Mining ◽

Trifolium Pratense ◽

Steppe Zone ◽

Botanical Garden ◽

Kuznetsk Basin ◽

Forest Steppe ◽

Initial Stage ◽

Arrhenatherum Elatius ◽

Zonal Soils

The article presents results of the long-term studies of the structure and production of agrophytocenoses, established on the coal mining dumps in the Kuznetsk basin forest steppe zone. Agrophytocenoses were established on the leveled dumps by seeding grasses and legumes. Another set of control agrophytocenoses was established by the same technic on zonal soil. Seeds were provided by the laboratories of the Central Siberian Botanical Garden SB RAS, Novosibirsk. After 30 yrs of observations it was found that agrophytocenoses on the coal mining dumps did not have initial stage, as well as stage of spontaneous species invasion. Elimination of Trifolium pratense and Arrhenatherum elatius from coal mining dumps phytocenoses took place 3-4 yrs later than from agrophytocenoses on zonal soils. Species did not eliminate totally, but remained in communities with increased or decreased relative abundances. Significant number of species displayed fluctuation, rather than succession in course of 30 yrs development on the coal mining dumps. These phytocenoses It was also found that agrophytocenoses on the coal mining dumps have high long-term production potential.

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