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Impact of mole migration on soil factor indicators of extensive grassland
25-29Views:112We investigated the effects of mole walks in extensive grassland soil, focusing on changes in soil factor indicators, 3-3 times per year, in 2022-2023, in Karcag. Based on our results, we found that the drier year 2022 had verifiably higher carbon emission values, only on an annual average, than the wetter year 2023. We found no verifiable differences in soil temperature and soil moisture conditions. Based on our data, it can be concluded that the mammal of choice for the year 2023, the mole, does not have a significant impact on the carbon dioxide emissions of the grassland soil. Further studies in other habitat conditions are definitely warranted.
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The effect of overripe sheepmanure on the composition and the yield of first growth Alopecuretum pratensis grassland association
29-32Views:81An experiment with overripe sheep-manure was carried out to make the environmental protective technology of nutrition on a cut-utilized grassland in the Karcag Research Institute of University of Debrecen, CAS. Based on our research results gained from the experiment of the low input Alopecuretum pratensis grassland association we established 4 year old research, that the 20 t/ha dose overripe sheep-manure the most favourable economical point of niev and perspective to increase the cover rate of clovers.
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Clarifying the effect of season on the early crop development of unconditionally grazed sheep
17-22Views:55The feasibility of first grazing of extensive sheep pastures was investigated by monitoring the height of grassland in the spring of 2022 and 2023 at the Karcag Research Institute, focusing on the effect of vintage in this manuscript. For 6 grassland plots with different parameters, potentially suitable for early spring sheep grazing, in a meadow on solonyec soil with no level of inputs due to environmental subsidies, we refined soil temperature, soil moisture and height of grassland vegetation at the same time of year. For both years, it was concluded that it is justified to start grazing sheep on the fallow grassland and the pasture forest.
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Change of perspective in grassland analysis, three-dimensional crop estimation and qualification method
47-58Views:122From the point of view of the lawns' current existence, use and their existence for the future, but the tasks, goals and challenges of grassland management have changed, and in line with this, we have carried out surveys and developed and modified a method for fast and efficient application.
In practice, it is very important to know the quantitative and qualitative characteristics of the forage found in the pasture, as well as the exact economic value of the pasture. The purpose of this study is to present a cheap, fast, reliable and easy-to-apply estimation method.
We took the previous methods into account and corrected and further developed them with the help of recent lawn management research results. Based on our tests, the corrected Balázs method can be used well to estimate the yield of grasslands and to determine the fodder value of the grassland. This method is cheap and requires no technical background. It also has the advantage, based on experience, that it takes into account the preference of species by animals.
The data from the cenological survey and the height measurement of the plant stock can be used to estimate the yield, fodder value and economic value. Being a non-destructive method involving minimal trampling, it is also particularly suitable for monitoring the grassland habitat of protected plants and animals. The method is also presented on a sample example, which proves its applicability.
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XXth International Grassland Congress in Dublin, Ireland, June 26 – July 1. 2005
141-142Views:68Immár XX. alkalommal rendezték meg a gyepgazdálkodási világkongresszust, ez alkalommal Írország fővárosában, Dublinban, 2005. június 26. és július 1. között. A négy évente rendezett kongresszusok célja nem változott. Összegzést adni a tudomány elmúlt négy évének eredményeiről és támpontokat adni a kutatás számára a közeljövő elvárásairól.
A Gyepgazdálkodási Világszövetség (International Grassland Congress) Állandó Bizottságának (Continuous Committee) jóváhagyásával a szervezők „A gyepek mint világméretű erőforrások (Grasslands – a Global Resource)” mottót választották a kongresszus témájául. A tudományos program ennek megfelelően átfogta nem csak a gyepgazdálkodás, de az érintkező tudományterületek szélesebb körét is. Az Ír Gyepgazdálkodási Szövetség (Irish Grassland Association) és az angol Gyepgazdálkodási Társaság (British Grassland Society), mint szervezők a szakmai rendezvények formájának jó megválasztásával ügyeltek arra, hogy az előadott témakörök a téma jellegének megfelelő fórumon kerüljenek terítékre. Ennek megfelelően valamennyi résztvevőt fogadó plenáris ülések foglalkoztak három átfogó témakörrel:
1. A gyepen termelt állati termékek iránti igény
A plenáris ülés mérlegelte a gyepről származó állati termékek iránt várható igényeket 20 éves távlatban a világon és a nagy földrajzi régiók szintjén, illetve kereste azokat a kulcstényezőket, amelyek befolyásolják a változások irányát vagy mértékét.
2. Gyepek és szálastakarmányok a társadalmi jólét javításáért és a szegénység csökkentéséért
A plenáris témakör kereste azokat a főbb lehetőségeket, amelyeket a gyepek és szálastakarmányok kínálnak a fejlődő országok elmaradásának/szegénységének csökkentésében. Sikeres projekteket mutatott be különböző társadalmi-gazdasági és agro-klimatikus zónákból, és rámutatott a sikerek kulcstényezőire.
3. Az állati termék előállítás és környezetvédelem gyepeken
A téma előadói tárgyalták és értékelték azokat az irányelveket és megközelítési módokat, melyek mentén összeegyeztethető a hatékony állati termelés a környezetvédelemmel és a környezeti állapot javításával, beleértve a szennyezés-, a talaj degradáció megelőzését, a biodiverzitás javítását. Vizsgálták annak mozgásterét, hogy hogyan lehetséges egy bizonyos területen az eltérő céloknak megfelelni, avagy a különböző célokat eltérő területegységeken lenne ésszerűbb megvalósítani. -
Domestic water buffalo (Bubalus bubalis) grazing as a habitat management and application option against invasive species
47-53Views:171In nature conservation, the aggressive expansion of invasive plant species and the preservation of valuable grasslands are a global problem. Based on this, the following question can be formulated: which animal species and breeds are suitable for habitat management? Is the water buffalo suitable for lawn care and to what extent? With the overview work, we review the results so far, highlighting domestic areas where we already have preliminary results and where previous data have already been produced. Based on this, the invasive Solidago was completely suppressed in the marshes of the Zámolyi basin, the pasture was completely transformed, and the dominant species became Sesleria uliginosa. Also in the area of the Zámolyi basin, there were significant floristic and physiognomic differences in the vegetation. You may find that buffalo grazing is a suitable habitat management method in both dry grassland and wet grassland. Therefore, in addition to being effective in the control of Solidago gigantea, grazing with buffaloes is successful both in terms of nature conservation and grassland vegetation from an economic point of view. The first stage of the long-term planned work is an overview of the work on the water buffalo. The research is supported by the creation of Innovation operational groups and the investment necessary for the implementation of the innovative project. call for tenders (VP3-16.1.1-4.1.5-4.2.1-4.2.2-8.1.1-8.2.1-8.3.1-8.5.1-8.5.2-8.6.1-17) and the Innovation and the New National Excellence Program of the Ministry of Technology code number ÚNKP-22-3-I-MATE/2 was supported by the grant funded by the National Research, Development and Innovation Fund and grant AKGF-119-1-202.
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Degradation degree evolution under different grassland management
35-44Views:121The objective of this manuscript is to clarify the changes in vegetation structure of an extensively managed grassland association under different land use practices. In the grasslands of the Hungarian Great Plain, the westernmost part of the Eurasian steppe, the largely decreasing grazing livestock numbers and the almost disappearing pastoral grazing make the topic very topical. We analysed the last 4 years of the study period 2009-2020 and found that the lowest degradation rates were measured in the meadow utilisation management, with values ranging from 0.277-0.463 in the 11th year of the experiment. And the highest degradation values were measured in the treatment with the overgrazing mode, with degradation degrees 3.43-5.0 in the 11th year of the experiment. In the treatment demonstrating the effect of overgrazing, we measured a high increase in the cover value of the weed Hordenum murinum, which is very dangerous for sheep, between 2017 and 2020, with an average of 107.6%.
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Data on botanical and animal feeding investigations of a sheep pasture in Káli Basin with special reference to nature reservation
51-58Views:118Sample grassland sites were investigated in Kővágóőrs (Káli Basin, Balaton Upland National Park, Hungary). The sample quadrates were designated in the following places: close to (0-100 metres) and away (250-500 metres) from the stable. Comparative coenological studies, forage values were investigated. Changes of species composition and ground cover, measure of possible regeneration or degradation were evaluated. It was examined how important grasses and pulses appeared or disappeared, how did the number of over-grazing tolerant species changed and how did the species composition influenced the nutritive value of the grassland. Results proved that among the plants there are either weeds poisonous and/or protected species, as well. Based on the results the characteristics of the examined grassland show the effects of grazing. According to results, observed grasslands have unfavourable species composition due to improper management practices and insufficient technological conditions.
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EGF 2024 – 30th General Meeting of the European Grassland Federation
43-45Views:53Harmincadik alkalommal került megrendezésre az Európai Gyepgazdálkodási Szövetség (European Grassland Federation) nemzetközi konferenciája (30th General Meeting of the European Grassland Federation), 2024. június 9-13. között, ezúttal a hollandiai Leeuwarden-ben.
Idén a rendezvény szervezői a gyepek általános szerepére, fontosságára és ökoszisztéma szolgáltatásaira helyezték a hangsúlyt (Why Grasslands?). A résztvevők arra keresték a választ, hogy milyen jövő előtt áll a legeltetéses állattartás, illetve milyen egyéb szerepe lehet még a gyepeknek Európában.
A szakmai program a legeltetéses állattartással érintett résztvevők műhelymunkájával (Grazing Workshop) indult a konferenciát megelőző napon, amely öt fő területre fókuszált:- Állategészségügy, állatjóllét
- Ráfordítás csökkentés
- Szennyezés ill. kibocsátás csökkentés
- Biodiverzitás megőrzése
- Biodiverzitás növelése
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Economic aspects of grasslands
73-82Views:82There are several products can be originated from the grass-land but their economic value in some cases are uncertain. The article shows the social benefits of the grass-land products answering the same time for the question: what the value is of the product in practice and how can it be determined. There are considered the market and non-market type of product of the grass-land and a new category is introduced; the animal keeping value of the grass.
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Study of the agronomic value of artificial extensive grasslands
28-35Views:61The agricultural value of an extensive, alternativly used grassland with three seed densities (500 seed m-2, 1000 seed m-2 and 1500 seed m-2) and at two sowing times was examined in an established grassland experiment with herbs on sandy brown forest soil in Gödöllő in the spring and autumn of 2002.
The results showed that treatment No. 3 (=1500 seed m-2) had the highest agricultural value. It can be concluded that the highest seed norm resulted in the highest grass cover. Through the estimated agricultural value, we have also proved that the grass established in autumn grows more vigorously than the dicotyledonous species. This follows from the biological characteristics of the two plant groups. The grasses are tolerant towards cold and perennial species, while most of the dicotyledonous are annual and prefer milder conditions.
Grassland areas with the same ecological basis differ greatly as far as their plant composition is concerned, depending on seed density. In addition, the plant composition changes continusly according to sowing time. -
Relationship between the diversity and mowing in cleared grassland areas in the Börzsöny mountains
3-13Views:76Nowadays, mowing has an increasing role in the management of semi-natural and nature conservation areas. Semi-dry grasslands have been formed on cleared areas of forest in the Pannon mountains, which would be reclaimed by forest without use of the areas by humans. In our work we analysed cleared grasslands. The questions we aimed to answer were the following:
(i) What kind of vegetation changes were caused by different land use types?
(ii) Is mowing a proper method for grassland management and nature protection in the studied system?
(iii) Do the species composition and the diversity vary within two years when conditions of precipitation are different?
In four sampling areas situted in Börzsöny mountains (North-Hungary), we registered the plant species and their cover values in ten quadrats per sampling area. We performed a site assessment in April, June and October, 2013-2014. We analysed the data by using cluster and ordination processes and we compared the sampling areas on the basis of the humidity preference and Shannon’s index of diversity. From nature conservation’s point of view, it is favourable that the cover of Potentilla alba occurring in the area was high. It is a specialist plant species with low stress resistance. However, due to tourism, it occured less frequently in the area and Bromus erectus became dominant instead. The species whose cover was more extensive in areas not affected by tourism – for example Alopecurus pratensis, Galium verum, Carex praecox, Trisetum flavescens – occurred less frequently in areas affected by tourism. On the short run, species did not completely disappear due to the changing conditions but their abundance decreased, as has been already supported by other surveys. The ordination analysis showed that the composition of species considerably differed with the portions of land cultivated in different ways. The change of the cover values was apparent not only in the case of the dominant species but of also in case of species with smaller cover. The decrease of diversity, the change of plant cover, the decrease of number of sensitive species as a result of tourism are typical phenomena all over the world. The Shannon’s diversity records showed that due to human presence and trampling the diversity declined. It was considerably lower in the year with less rain. In the year with more rain the diversity of species was considerably higher, however, the difference in between the surveyed areas was large. All these examples draw attention to the important role of environmental factors alongside the human factors. The water reserve also influences the productivity of grasslands and water has primary importance in the structure of plant communities. According to the survey, in the two areas not affected by tourism, in the rainier year the difference between the humidity preference of the species of the dry and the less dry patches became similar. On these areas, there were more species with higher humidity preferences in the rainier year, however, this tendency could not be observed in the rainier year on areas affected by tourism. The areas affected by tourism may react in a less flexible manner to the change in precipitation conditions. Based on our analysis, we can conclude that the surveyed semi-dry grasslands are extremely rich in species and therefore proper grassland management plans are needed. To preserve grasslands of high natural value, the impacts of the environmental factors should also be considered in addition to becoming acquainted with the history and the present conditions of landscape use.
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The role of sheep grazing in nature reservation
95-100Views:82Economic and social changes in the last two decades reduced the grazing animal systems more or less to the nature reservation areas. The main objective of these grazing systems on these areas is the preservation of natural treasures herited from the past. Beside that, grazing systems have social (employment) and economic (production) roles as well in some areas of the country. In this paper connections between sheep grazing and the maintenance of different grassland associations of Hungary are investigated from the point of nature reservation friendly farming systems. In general sheep grazing have more positive effects on nature reservation grasslands than its negative effects. It is not difficult to identify the negative effects and to apply proper practical methods avoiding or reducing these effects. Sheep grazing is a proper tool to handle the fragmentation of some of the national grassland areas so it must be kept on as a critical method in the natura friendly farming practices.
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Comparison of vegetation of Hungarian Grey Cattle and Hungarian water buffalo pastures in a sample area of the Danube-Tisza Interfluve
59-64Views:124In the present study, we aimed to investigate the coenology of the Kelemen-szék in the Kiskunság National Park. The coenological studies were carried out twice. We compared areas with different vegetation types. During these two surveys, we examined in total 90 quadrats of mixed grazed and fenced control areas. Ones were grazed by Hungarian domestic buffalo and Hungarian grey cattle and others were no grazed. Based on these surveys, it is possible to conclude about spatial and temporal changes in vegetation as a result of livestock husbandry in the area. Due to the size and heterogeneity of the studied area, we intended to investigate small homogeneous areas and respective control areas. Coenological surveys were done on lower and higher lying pastures, saline soil areas and loess areas.
In the study plots, grazing led to stability in the species composition of loess grassland and saline grassland, so that they also satisfy the requirements moof nature conservation. The dominant and character species of the associations, and the typical species of the genus Festuca have a significant cover value. The dense and tall Puccinellia swards require more attention, because they are more vulnerable against grazing. Grazing and extensive livestock husbandry, which can be applied in the future, is a suitable method for the management of lowland areas. In order to conserve the associations, preservation of grazing is necessary. To provide amount of biomass of areas, the grazing has a significant role. The conservation of native loess grasslands, even in the form of fragments, plays an outstanding function. Hence, based on the initial surveys, the combination of Hungarian grey cattle and water buffalo is beneficial in terms of nature conservation.
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Effects of organic fertilization on the structure and yield of extensive grassland plant populations
3-8Views:119The effects of different organic fertilizer inputs were investigated on natural grassland with solonyec soil conditions at the Karcag Research Institute. Mature sheep manure applied at 0-10-15-20 t/ha at single irrigation in early spring induced positive changes in stand structure and yield even in the semiarid spring of 2022. In the non-irrigated part of the experiment, the difference in the rates of organic manure was hardly affected.
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Fajösszetétel és diverzitás változás kiskunsági száraz és nedves fekvésű legelőkön
15-30Views:193Investigations were carried out in wet – next to Tatárszentgyörgy, and dry grass pasture – next to Bugac, both located in Kiskunság, in the central region of Carpathian Basin. Recordings were taken every June of 2007, 2008, 2009 and 2010 from Tatárszentgyörgy – where cattle were grazed, and 1997, 2005 and 2010 from Bugac, where cattle and sheep were grazed. Coenological recordings were taken in three zones. The first zone ("A" zone) located 0-50 m near the stable, second zone ("B" zone) located 50-150 m from the stable, while the third zone ("C" zone) located farther then 150m from the stable. Analyses of ecological and environmental factors were based on Borhidi’s relative ecological indicators. Life form analyses were performed by Pignatti life form types. For statistical evaluation, R software was applied. Shannon diversity. Based on our results for both dry and wet grasslands, quadrates of "A" zone were well isolated from the rest of the zones. Overgrazing, which involves considerable trampling, vanishes differences among vegetations, thereby promotes weed and disturbance tolerant rich vegetation. The lowest species number and diversity could be found here. Recordings for "B" and "C" zones separated from recordings of "A" zone, furthermore, quadrates of wet and dry grasslands formed separate groups. From recordings of "B" and "C", zone perennial grass species (H caesp) and the emerging perennial (H wrap) species multiplied and these species were the indicators of grazing. The greatest lifeform richment were presented among "B" zone recordings. The amount of intensive grazing indicator species, such as creeping perennials (Hrep) was significant in "B" zone recordings of Tatárszentgyörgy. Grazing stabilised the local vegetation, but increased the ratio of disturbance tolerant species, which was confirmed by conservation evaluation. This is due to the conversion of grassland types, the transition from free grazing to switch grazing, which resulted in an intensive involvement of the more distant "C" zone as well. "A" zones fully converted; they changed into fully reliefs. Further located sample area vegetations were not homogenised by grazing and even helped the preservation of characteristic species. In the aspect of environmental protection, vigorous grazing led to a more valuable vegetation in "B" zone in an arid grassland (Bugac). According to the sample area, wet grasslands from the sandy areas of Kiskunság, preserve nature protection values and grass composition better moving away from stables, due to less grazing pressure. Drier backgrounds tolerate stronger grazing pressure (Bugac), while in case of wetter areas (Tatárszentgyörgy) – considering sustainability – grazing should be carried out with caution.
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Effect of organic fertilisation on yield and soil factor values of extensive grassland
23-28Views:55The effect of different rates of organic fertilizer was investigated on a natural grassland with solonyec soil conditions at the Karcag Research Institute in the second year after application. Of the mature sheep manure treatments applied at 0-10-15-20 t/ha, the 20 t/ha dose was shown to result in higher dry matter yields. In addition, the 20 t/ha dose of organic manure was shown to stimulate soil life, as supported by measurements of carbon dioxide emissions, and to help better conserve soil moisture.
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Investigation of carbon dioxide emissions from underutilized grassland
15-25Views:268Climate change-induced extreme changes are making phytomass yields of extensive grasslands in continental areas increasingly dependent on the season. This situation is exacerbated, inter alia, by the decline in grazing livestock production due to a lack of quality labour, and thus by an increase in the proportion of unused or under-utilised grassland. In our experiments, we have refined the effects of a decade of zero, mulch, mowing and meadow utilisation on carbon emissions, soil moisture and soil temperature during two different types of years. We found that zero tillage with accumulated duff in the absence of utilization had the highest carbon dioxide emission values in different years, even at lower soil moisture values. Our results confirm the fact that fallow grasslands can be considered a source of risk due to their increased greenhouse gas emissions.
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The impact of production factors on the yield formation of grasses of various exploitation
13-18Views:138The lawn – following the forest – is the best manner of land use. 10.75 percent of Hungarian territory is grassland. 90-95 percent of the grass’s root system can be found in the upper 10 cm layer of the soil therefore and because of the large evaporating surface the grasses have a great water demand and weather sensitivity. Beside the nutritional ability and some extreme properties of soil (for ex. great salinity) there is an influence on formation of the grass-type and the yield. In our experiments the sites were utilised 2, 3 and 4 times yearly. At two sites for four years (2006-2009) and at one site for two years (2009-2010) the quantity and the distribution of the yield as well as other parameters were examined, which are not reported in this paper. This experiment is a part of a climate research project run at 27 sites in Austria. The laboratory analyses were carried out uniformly in the LFZ Raumberg- Gumpenstein Research Institute. The most important results of this study are the following: The productivity of the grass type formed on the Little Cumania lowland is very limited. In case of drought there was the highest yield decrease and at the same time in case of good precipitation there was the smallest increase of yield. The effect of grass utilization by late first cut at the poorestsoil site was very unfavourable. At the grass sites of better quality, the utilization manner of 3 or 4 growth, resulted in a better adaptation to the climatic extremities.
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Conservation survey of horse pastures and hayfields in an equestrian centre near Sukoro
37-46Views:51The test was carried out in Sukoró, on the lawns of the Sukoró Equestrian Center in May 2023. The purpose of the survey was to present the natural state and economic value of grasslands with different uses. The ceenological surveys were carried out using the Braun-Blanquet method, during which we recorded the data using 2x2 meter squares and gave the cover values in %. The squares were placed randomly in the given areas. During the survey, we analyzed five sample areas in three units. Our sample area I. is degraded fresh grassland, which was a horse pasture that was overgrazed in 2023, II. the sample area was a meadow dominated by sedge, which is utilized by mowing. The III. the sample area is Siki lawn dominated by Festuca pseudovina, which was also mowed. The IV. the deepest part of the mowing area, marsh meadow-fen, which is also used as a mowing area. Sample area V is silicate rock grassland, which is also grazed by horses, but was left alone in 2023.
With the exception of sample area I, which was intensively grazed in 2023, and therefore overgrazed by trampling, based on the tests, the natural state of the lawns remained valuable even after treatments, mowing and grazing. In the lawns, the largest proportion of elements of the native flora can be found. In the deeper spot on the mowing field, bog elements and the protected species Anacampts pyramidalis also appeared. A protected species, Allium sphaerocephalon, also occurred in the silicate rock lawn. The lawn management methods carried out by the riding center are suitable for maintaining the area's vegetation in a close-to-nature and long-term manner.
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The role of grasslands in natural and farm-like game management: Papers presented at the „Timely questions in grassland and game management” scientific conference (Hungarian Academy of Sciences – Kaposvár University, 18-19 May 2006)
25-33Views:111This paper investigates the relationship between grasslands and game management. It focuses on three questions:
- grasslands as habitats for game,
- grasslands as sites for prolification,
- grasslands as sources of nutrition.
Five so-called big, and five so-called small game species were considered, based on my own research and a literature review. Main results and consequences:
- grasslands as ecosystems are more important in game management than as solely resources of nutrients,
- compared to their territorial proportions, grasslands play a 2-3 time grates role in game management,
- grasslands are more preferred on areas where vegetation types are frequently changing (a given vegetation occupies only a small area),
- there is a remarkable seasonality in grassland use of small game, spring being the peak season,
- classification of game considering grasslands as sources of nutrients:
I. grasslands are hardly eaten by: red deer, wild pig, wild ducks
II. grass is consumed, but it is not a main source of nutrients: for fallow deer
III. grass is consumed as frequently as other forages by roe deer, wild sheep
IV. grasslands are important feeding sites for pheasants, partridges
V. grass is the main forage for hares, wild ducks -
Comparison of vegetation of Hungarian Grey Cattle and Domestic water buffalo pastures in a sample area of the Danube-Tisza Interfluve
15-31Views:95We made a coenological study on the Kelemen-szék in the Kiskunság National Park. The coenological studies were carried out twice, in 2014 and 2015. During these two surveys, we examined in total 90 quadrats of mixed grazed and fenced control areas by domestic water buffalo and Hungarian Grey Cattle. Due to the size and heterogeneity of the studied area, we intended to investigate small homogeneous areas and respective control areas. Coenological surveys were done on lower and higher lying pastures, saline soil areas and loess areas.
The studied areas were assessed based on the Borhidi relative plant ecological indicators NB (relative nitrogen values) and WB (relative groundwater and soil moisture indicator values). The distribution of nature conservation value categories (TVK) and social behavior types (SzMT) were used to assess the areas. Cluster analysis and detrended correspondence analysis (DCA) were used to evaluate the data.
The data were assessed based on both habitat condition in terms of naturalness condition. On the other hand, relative ecological indicators of the occurred species. Our objectives were to provide a detailed description of the vegetation composition of the study areas, to assess the changes in grassland composition and their conservation impacts as a result of grazing and its abandonment, to assess the impact of grazing on the occurrence of protected species and weed species, and to assess grazing as a conservation habitat management practice.
The examination of the species composition showed that the loess and saline soil areas grazed by domestic water buffalos and Hungarian Grey Cattle provided a better composition of grassland in terms of natural condition compared to the control areas. In the dense and tall Puccinellia swards vegetation type, grazing requires more attention, because it is more vulnerable to grazing, has fewer species and is more damageable.
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Biomass of the sandy grasslands along the Danube
31-35Views:136Festuca taxa are important grassland species in the pannonian vegetation, and are defining members of it where conditions are too extreme for most plants. Based on grassland management surveys, habitats of narrow-leaved or small Festuca species are an indicator of poor productive capacity, but are important in terms of nature conservation. The significance of these grasslands are likely to be increasing in line with climate change and expanding dry habitats.
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Gyepgazdálkodás és földhasználat hegyvidéki régiókban
77-78Views:7130 ország több mint 200 szakemberének részvételével a Mezőgazdasági Kutató és Oktató Központban (AREC) rendezték meg az Európai Gyepgazdálkodási Szövetség (European Grassland Federation) ez évi szimpóziumát. A Szövetség alapszabálya szerint az egyik évben szimpózium, a másik évben konferencia (General Meeting) kerül megrendezésre. A szimpózium témája szűkebb témakört ölel fel, igazodva a rendező ország sajátosságaihoz. A konferenciákon pedig a gyepgazdálkodás teljes horizontja terítékre kerül. A tudományos program az ünnepélyes megnyitóval kezdődött, ahol két szakmai előadás hangzott el:
– Hegyvidéki gazdálkodás Európában (Mountainous farming in Europe)
– Az ausztriai gyepgazdálkodás – a jelenlegi helyzet és a jövőbeni kilátások (Grassland farming in Austria – status quo and future prospective) -
Kaszálás felhagyás hatása helyreállított szikes és löszgyepek vegetációjára
21-29Views:86Grasslands recovered by sowing of low diversity seed mixtures are frequently managed by mowing. However only a few studies focused on the direct effects of post-restoration mowing on recovered grassland vegetation. In this study we followed vegetation changes in 13 recovered grasslands, in 5×5-m-sized exclosures with continuous and ceased mowing in Hortobágy, East-Hungary. We asked the following study questions:
(i) What are the effects of cessation of mowing on the vegetation structure of recovered grasslands?
(ii) What are the effects of cessation of mowing on the abundance of sown grasses, target and weed species?
(iii) Is yearly mowing an appropriate management for the maintenance of recovered grasslands?
Our results showed that the cessation of mowing caused litter accumulation, decrease in total cover and decrease in the cover of sown grasses compared to the continuously mown exclosures. The cover of perennial weeds was significantly higher in unmown exclosures compared to the mown ones. The species composition in mown exclosures remained more similar to reference grasslands than to the unmown ones. Our results suggest that without a regular post-restoration mowing the favourable stage of recovered grasslands can be rapidly vanished caused by litter accumulation and/or by the expansion of undesirable weedy species. We also stress that yearly mowing is solely enough to maintain grasslands recovered by low-diversity seed sowing, but cannot be considered to be enough to recover target vegetation composition.