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Long-term mowing on biomass composition in Pannonian dry grasslands in the Western-Cserhát
35-38Views:56This study is focusing on the vegetation of seminatural dry grasslands. Those loess grasslands are valuable with large biodiversity; however their long-term preservation requires regular conservation management. The report demonstrates the results of mowing experiment, designed to suppress the spread of unpalatable grass species, Calamagrostis epigeios. The study site is located in mid-successional loss grasslands, in the Western-Cserhát, near Rád, northern Hungary.
The study aims to the investigate the followings: Can the unpalatable Calamagrostis epigejos be suppressed by mowing? Are there possibilities to increase the diversity of sward by this? The study aims, to measure potential value-increasing effect of mowing, and to determine the carrying capacity in the aspect of grassland management.
In 2001, Camagrostis epigeios was the species with the highest coverage rate according to the both treatment types, with an average cover value of 63%. However, as a result of mowing, a significant difference was detected in the amount of litter and legumes species as well. The number of species showed a slight increase in both types of treatment, from 15 to 37 in the mowed plots, but also from 18 to 27 in the control plots. We concluded that mowing twice a year was beneficial to modify botanical composition of a grassland. In a way it was suited well for agricultural usage, in particular grazing which can replace the expensive and time-consuming scythe. It is also a suitable management measure for controlling the native invader species as a Calamagrostis epigeios, and can significantly increase the proportion of species with higher forage values.
Mowing has significantly increased the density of Calamagrostis epigeios, the species richness, and the diversity in the course of secondary succession. Therefore, mowing twice a year proved to be a successful management measure for controlling Calamagrostis epigeios, and for obtaining a sward composition. The treatment was effective in restoring grassland composition, although the achievement and maintenance of favourable conservation status for the grassland habitat require long-term management planning and regular treatment. According to the objectives, mowing not only promotes the control of the invasive species, but also the economic utilization of the area.
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Botanical and natural conservation comparison of seminatural and man-made grasslands in Paskom near Csakvar
3-14Views:284During the survey, the vegetation, botanical composition and grassland management values of a grassland were studied. The study site was originally a pasture, then was transformed into an arable land and finally back to pasture. The 160-ha-sized area is called „Szűzföld” and is located in the Zámoly Basin, West Hungary. In 1998, grazing of Hungarian grey cattle has begun on the grassland. The changes in the vegetation were followed from 1998, making records in every 6th year (1998, 2015, 2021). 6 coenological records were made in each type of grasslands, by recording the list of the occurring taxa and their cover values. During the survey the main questions were the following: considering nature conservation, coenology and grassland management, in which direction does the vegetation evolve with the grazing? Was the grazing with Hungarian grey cattle successful?
Based on the results, the grasslands became much more mosaic-like; drier and wetter vegetation patches could be separated (2015, 2021). As the grazing continued, species richness and diversity increased, especially in the wet areas.
The number and the cover of economically important grass taxa and legumes have increased. The following taxa became dominant: Festuca pseudovina in the drier parts, Agrostis tenuis and A. stolonifera in the wet ones. Based on the life form system of Pignatti, the area is not overgrazed, as rosette and reptant taxa did not became dominant. Based on nature conservation values, cover of the taxa of natural grasslands increased.
During the grazing, the meadow was universally covered mainly by weeds in 1998, and became much more valuable by 23 years later by means of nature conversation and grassland management. Moreover, this state has been stabilized according to the diversity values.
Based on the results, the grazing with Hungarian grey cattle was successful by both nature conservational and economical means. -
21st General Meeting of European Grassland Federation
145-146Views:502006. április 3. és 6. között rendezte az Európai Gyepgazdálkodási Szövetség (European Grassland Federation) a 21. hivatalos konferenciáját (21st General Meeting of the European Grassland Federation) a spanyolországi Badajozban.
A Spanyol Gyepgazdálkodási Társaság (SEEP, Sociedad Española el Estudio de los Pasots) a Szövetség Végrehajtó Bizottságának (Executive Committee) jóváhagyásával a gyep termelékenységének fenntarthatóságát (Sustainable Grassland Productivity) választotta a rendezvény átfogó témájának. Közel 40 ország csaknem 300 résztvevője a téma aktualitását kellőképpen indokolja.
A szakmai program a Szövetség alapszabályának megfelelően bonyolódott hétfőtől csütörtök délig, amiből egy délutánt a szakmai tanulmányút (mid conference tour) foglalt el. Az európai gyepgazdálkodás szakirodalmát friss eredményekkel gazdagítja az a 278 tudományos dolgozat, amelyeket a konferencia idejére megjelentetett tudományos kiadvány (Sustainable Grassland Productivity – Proceedings of the 21st General Meeting of the European Grassland Federation, Badajoz, Spain, Grassland Science in Europe Volume 11. Caja de Badajoz, 847. p.) tartalmaz.
A konferencia megnyitója a mediterrán térség gyepgazdálkodási sajátosságaival foglalkozott. Ennek első része a dél-spanyol térség tradicionális fás legelőit (dehesa) tárgyalta. Bemutatta, hogy ezt a történelmi gyökerekkel rendelkező gazdálkodási módot – közel 4 millió hektáron a térségben – milyen eredménnyel sikerült a vidékfejlesztés mai igényeinek is megfelelően megőrizni (termelés /erdő, gyep, időszakos szántó, valamint a kérődzők és a sertés legeltetéses tartása/, tájmegőrzés és természetvédelem).
A megnyitó másik része a gyenge termékenységű arid klímájú mediterrán térség másik extenzívnek nevezhető gazdálkodási módját, a gabonafélék, az ugaroltatás és a juh legeltetés hármas rendszerét vizsgálta a multifunkcionális mezőgazdaság szempontjából.
A tudományos program további részét öt szekció köré szervezték:
1. A szálastakarmány-gazdálkodás szezonális problémáinak kezelése (Overcoming seasonal constraints to forage production)
2. A pillangósok szerepe és lehetőségei (Role and potential of legumes)
3. A takarmánytermesztés mennyiségi és minőségi kérdései (Production and quality aspects of different animal feeds)
4. Az állattartási módok változása a közös agrárpolitikához igazodóan (Changes in animal production systems to meet CAP reforms)
5. A gyepek és a klímaváltozás (Grassland and climate change) -
Comparison of the production of fenugreek (Trichonella foenum-graecum) experiments in 2018-2020
11-14Views:105The aim of our study is to compare the results (content values, yield) of fenugreek (Trigonella foenum-graecum L.) experiments in 2018-2020. Fenugreek is an annual herbaceous plant belonging to the legumes (Fabaceae) family. It is a multifunctional crop for use in domestic and farm animal feeds, wild fodder, herbs and spices. During the study period, nutrient supply treatments were applied to increase the production values of the plant. The weed suppressing ability of fenugreek in the post-emergence period (1-3 weeks) is very poor, so we had to use chemical weed control. During the experiment, the T. foenum-graecum stock was irrigated. The plant was harvested 80-90 days after sowing. The study was carried out in Kecskemét in 2018-2019, at the Demonstration Garden of John von Neumann University, Faculty of Horticulture and Rural Development. The 2020 experiment was set up at the University of Szeged, Faculty of Agriculture.
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The seasonal effect on the vegetation of Hungarian grey cattle pasture in 2022 and 2023 - A case study
29-36Views:44The "Szűzföld" area, managed by the Pro Vértes Public Foundation, has been managed for nature conservation and economic grazing since 1998 with Hungarian grey cattle. In the present work the vegetation data of the pasture were analysed for the years 2022-2023, in order to investigate the effect of the weather conditions in an extremely dry year (2022) and an extremely wet year (2023) using 2 × 2 m coenological records. To analyse the ecological indicators of species, we used Borhidi's relative plant ecological indicators: relative nitrogen demand (NB) and relative soil water and soil moisture (WB) scores. We also assessed the data according to Simon's conservation value categories (TVK) and Borhidi's social behaviour types (SBT). The grassland management assessment of the vegetation was based on the forage value scores of the species used by Klapp et al.
The results showed no significant differences in species in the two years, but significant differences in cover values. In the year with rainfall, the proportion of accompanying species decreased, while the proportion of weeds and natural disturbance tolerant species increased. The amount of grasses and legumes increased, which are important for grassland management.
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Kaszálás felhagyásának kezdeti hatása nyugat-magyarországi üde gyepek fajkompozíciójáradhdhdh
13-20Views:53In our survey we collected data about the behaviour of dominant species on three wet meadows in the West part of Hungary. We focused on species composition, the stability and economic values of the grasslands affected by abandonment and mowing. The meadows are mowed twice a year since 2006. We established abandoned plots (50×50 m) within each meadows in 2012 to investigate how can the species composition shifts by abandonment comparing with the mowed plot. In this study we investigated the abundances of species in 2×2 m quadrates (10 per plot) in three times per a year (April, June, August) in 2012 and 2013. Total species lists are similar (55 ± 6% common species in paired comparison) on the three grasslands, however the reaction of dominant species on mowing and unmowing were different, probably due to also the significant differences in the abundance of dominant species between meadows. The abundance of Festuca arundinacea decreased on every abandoned plot from 2012 to 2013, while the effects of abandonment were different on the abundance of Poa angustifolia. The abundance of Cirsium canum was higher in every mowed and also in every unmowed plot in 2013 than a year before. Comparing the three grasslands the abundance of primary grasses, stinger plants and legumes species were significant different in both investigated years. The significant differences in the abundance of dominant species among grasslands were presumably not only caused by the differences in the applied treatments but also the effects of environmental factors.
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magyar
55-58Views:59A cikk a gyepalkotók 2021-2023. évi vetőmagárainak növekedését hasonlítja össze a Magvas Vetőmag Kft. árai alapján.
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Monthly changes in the production and content values of wet Hungarian gray cattle pasture and the relationship with species richness
19-28Views:102Grassland management tests were performed on different grazing loaded gray cattle pasture and hayland areas 4 times (April, May, June, September) during the grazing season in Tapolca-basin. 5-5 pieces of 2×2 m samples were examined on each sample area, prepared according to the Braun-Blanquet method (1964) in April, May, June and September and with this, we also measured the amount of biomass and its content.
Based on results additional pasture had the largest gazing livestock carrying capacity but it had the weakest feed quality as well. During grazing season due to ongoing livestock grazing, species composition has changed the most in case of pasture and the number of species was the greatest here as well. Proportion of grasses declined in parallel with the amount of legumes, which grown till late summer.
Nutrient content of pasture forage was the most appropriate because of high crude protein and less crude fiber content. Grazing for 34 days/year was not enough in case of additional pasture where Festuca arundinacea had the largest coverage. This is reflected in low number of species richness and small nutritional values of sample areas. For sedge rich low-lying areas mowing utilization is the most effective.