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Artykuły w czasopismach na temat „Long grasser”

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Data publikacji: 4 czerwca 2021
Data aktualizacji: 15 lutego 2022

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1

SCHMIDELY, P., and D. SAUVANT. "Taux butyreux et composition de la matière grasse du lait chez les petits ruminants : effets de l’apport de matières grasses ou d’aliment concentré." INRAE Productions Animales 14, no. 5 (December 17, 2001): 337–54. http://dx.doi.org/10.20870/productions-animales.2001.14.5.3760.

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Une base de données sur les effets de l’apport d’aliment concentré ou de matières grasses a été constituée pour quantifier la réponse du taux butyreux et de la composition en acides gras du lait chez les petits ruminants. L’apport d’aliment concentré réduit le taux butyreux, de façon plus marquée en ration complète qu’en ration fourrage - concentré séparés. Dans ce dernier type de ration, la réponse de la matière grasse du lait est curvilinéaire, un ratio fourrage concentré 1:1 maximisant la matière grasse produite. Dans ces conditions, les proportions des AG courts et moyens du lait sont peu
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Carson, Dean, Doris Carson, and Andrew Taylor. "INDIGENOUS LONG GRASSERS: ITINERANTS OR PROBLEM TOURISTS?" Annals of Tourism Research 42 (July 2013): 1–21. http://dx.doi.org/10.1016/j.annals.2013.01.009.

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Ghosh, P. K., R. Saha, J. J. Gupta, T. Ramesh, Anup Das, T. D. Lama, G. C. Munda, Juri Sandhya Bordoloi, Med Ram Verma, and S. V. Ngachan. "Long-term effect of pastures on soil quality in acid soil of North-East India." Soil Research 47, no. 4 (2009): 372. http://dx.doi.org/10.1071/sr08169.

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North-East India is known for its complex, diverse, risk-prone, and fragile hilly ecosystem. Natural resources in terms of soil, water, vegetation, and soil organic carbon (SOC) are much degraded. Effects of long-term perennial grasses maintained at a permanent fodder block of the ICAR Research Complex, Meghalaya, on soil quality were examined after 15 cropping cycles. The aims were (i) to ascertain whether perennial grass primarily maintained as fodder source for ruminants could conserve resources and improve soil quality in the hilly ecosystem of North-East India, and (ii) to select a suitab
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Archer, KA, and GG Robinson. "Agronomic potential of native grass species on the Northern Tablelands of New South Wales. II. Nutritive value." Australian Journal of Agricultural Research 39, no. 3 (1988): 425. http://dx.doi.org/10.1071/ar9880425.

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The quality of three year-long green and three summer-growing, frost-susceptible perennial native grasses was compared with that of two introduced temperate perennial grasses and white clover (Trifolium repens L. cv. Haifa). Digestibility of white clover generally exceeded that of all grasses, except for the green leaves of the two introduced species, Festuca arundinacea Screb. cv. Demeter and Phalaris aquatica L. cv. Sirosa, during winter. The digestibility of the green leaves of most winter-green species increased during winter and decreased in summer, the extent of this being greater for th
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Abu, S. T. "Evaluating long-term impact of land use on selected soil physical quality indicators." Soil Research 51, no. 6 (2013): 471. http://dx.doi.org/10.1071/sr12360.

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This paper presents findings of comparative evaluation of selected soil physical quality (SPQ) indicators, obtained from fields subjected to: >50 years of cultivation of three perennial pasture grasses (i) Digitaria smutsii (DS), (ii) Brachiaria decumbens (BD), and (iii) Andropogon gayanus (AG); (iv) >50 years of continuous cultivation (CC) of cereals–legumes; and (v) >20 years of natural fallow (NF). The study was aimed at identifying the land-use system having optimal values for SPQ. Fields under CC had the highest bulk density, and the lowest total porosity (PORt) and macroporosity
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Thorn, Vanessa C. "Phytolith evidence for C4-dominated grassland since the early Holocene at Long Pocket, northeast Queensland, Australia." Quaternary Research 61, no. 2 (March 2004): 168–80. http://dx.doi.org/10.1016/j.yqres.2003.12.002.

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Preliminary phytolith analysis of ephemeral lake fill sediment at Long Pocket, near Toomba, northeast Queensland, Australia, indicates that a C4-dominated grassland with a minor woody component has been present in the region since ca. 8000 cal yr B.P. Based on the modern distribution of C4 and C3 native grasses in Australia, this suggests that mean summer temperatures of at least 14°C (ca. 10°C cooler than present) were maintained since the early Holocene. This interpretation is comparable with previous studies, which together imply that the establishment of C4-dominated grasses in central and
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Vorontsova, Maria S., Guillaume Besnard, Félix Forest, Panagiota Malakasi, Justin Moat, W. Derek Clayton, Paweł Ficinski, et al. "Madagascar's grasses and grasslands: anthropogenic or natural?" Proceedings of the Royal Society B: Biological Sciences 283, no. 1823 (January 27, 2016): 20152262. http://dx.doi.org/10.1098/rspb.2015.2262.

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Grasses, by their high productivity even under very low p CO 2 , their ability to survive repeated burning and to tolerate long dry seasons, have transformed the terrestrial biomes in the Neogene and Quaternary. The expansion of grasslands at the cost of biodiverse forest biomes in Madagascar is often postulated as a consequence of the Holocene settlement of the island by humans. However, we show that the Malagasy grass flora has many indications of being ancient with a long local evolutionary history, much predating the Holocene arrival of humans. First, the level of endemism in the Madagasca
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Nie, Ming, Junyu Zou, Xiao Xu, Chao Liang, Changming Fang, and Bo Li. "Comment on “Unexpected reversal of C3 versus C4 grass response to elevated CO2 during a 20-year field experiment”." Science 361, no. 6405 (August 30, 2018): eaau3016. http://dx.doi.org/10.1126/science.aau3016.

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Reich et al. (Reports, 20 April 2018, p. 317) reported that elevated carbon dioxide (eCO2) switched its effect from promoting C3 grasses to favoring C4 grasses in a long-term experiment. We argue that the authors did not appropriately elucidate the interannual climate variation as a potential mechanism for the reversal of C4-C3 biomass in response to eCO2.
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Halvorson, Ron. "A Long-Awaited Key for the Grasses of Oregon and Washington." Northwest Science 94, no. 1 (April 22, 2020): 97. http://dx.doi.org/10.3955/046.094.0107.

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Johnsen, T. N., and H. L. Morton. "Long-Term Tebuthiuron Content of Grasses and Shrubs on Semiarid Rangelands." Journal of Range Management 44, no. 3 (May 1991): 249. http://dx.doi.org/10.2307/4002952.

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Adamovičs, Aleksanders, Maija Beča, and Jāzeps Spružs. "RATIONAL USE OF HERBAGE BIOLOGICAL DIVERSITY FOR HIGHT-QUALITY FORAGE PRODUCTION." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 18, 2005): 77. http://dx.doi.org/10.17770/etr2005vol1.2116.

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Research goal – information of floristically rich and hight – productive agrocenosis for the production of qualitative forage. Long – term field experiments were established on two types of soils using species of grasses with biological and economic traits different from forage legume and grass families.Persistence, productivity and quality of forage grasses have been determined in mixed swards in different utilization regimes and on different fertilizer backgrounds. It was stated that the rational use of the forage grasses gene fund as well as aperies and varieties of grasses introduced into
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12

Ciria, Carlos S., Ruth Barro, Marina Sanz, and Pilar Ciria. "Long-Term Yield and Quality Performance of Perennial Energy Grasses (Agropyron spp.) on Marginal Land." Agronomy 10, no. 7 (July 21, 2020): 1051. http://dx.doi.org/10.3390/agronomy10071051.

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The cultivation of perennial grasses is one of the most desirable alternatives as energy feedstock, but it is difficult to achieve competitive yields under Mediterranean marginal conditions. The aim of this study was to assess the performance of three cool-season grasses (Agropyron spp.) from an agronomic and energetic point of view by comparing the dry matter (DM) yields, rain use efficiency, chemical composition, and biomass quality over an eight-year period in Spain under marginal rainfed conditions. The tall wheatgrass (Agropyron elongatum (Host) Beauv.) cultivars, Alkar (4.8 Mg DM·ha−1) a
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13

Ganter, Barbara, Fred Cooke, and Pierre Mineau. "Long-term vegetation changes in a Snow Goose nesting habitat." Canadian Journal of Zoology 74, no. 5 (May 1, 1996): 965–69. http://dx.doi.org/10.1139/z96-109.

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Vegetation in a small section of nesting habitat in a Lesser Snow Goose colony was mapped in 1976 and again in 1993. During the 17-year period, ground cover changed dramatically from being dominated by salt-marsh graminoids and short grasses to being dominated by willows and areas of bare sediment. Lyme grass, Elymus arenarius, a plant strongly favoured by Snow Geese when selecting their nest sites, which covered 15% of the ground in 1976, had completely disappeared by 1993. Although the area had contained 79 Snow Goose nests in 1976, no nests remained in 1993. Degradation of the nesting habit
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14

Ivanov, D. A., O. V. Karaseva, and M. V. Rublyuk. "Study of the dynamics of herbs productivity based on long-term monitoring data." Agricultural Science Euro-North-East 22, no. 1 (February 17, 2021): 76–84. http://dx.doi.org/10.30766/2072-9081.2021.22.1.76-84.

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The paper shows methods for studying the data bank for monitoring the yield of grasses within the agrolandscape. Monitoring of the yield of different-aged (1, 2 and 3 years of use) grass legumes was carried out in 2001-2019 at an agroecological test site located within a finite moraine hill at permanent sampling points on a transect that crosses all the main micropositions of the agricultural landscape. The influence of the features of various landscape structures (slopes of different exposure, landscape plots within their limits and the variegation of the soil cover) on the dynamics of grass
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15

Kessler, Albrecht. "Long-term changes of air temperature within a pine forest as compared to those above a grass surface." Meteorologische Zeitschrift 16, no. 3 (June 21, 2007): 305–12. http://dx.doi.org/10.1127/0941-2948/2007/0201.

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Williams, M. Coburn. "Twenty-year Control of California False-hellebore." Weed Technology 5, no. 1 (March 1991): 40–42. http://dx.doi.org/10.1017/s0890037x00033224.

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Experimental plots treated with 2,4-D amine at 2.2 kg ae ha-1in 1968 and 1969 to control California false-hellebore were evaluated in July 1989 to determine long-term control of California false-hellebore, changes in foliar cover, and increases in production of desirable species. Control of California false-hellebore was 100% on all treated plots. The foliar cover on treated plots averaged 78% grasses and sedge, 20% broadleaf plants, and no California false-hellebore. Control plots averaged 85% California false-hellebore, 10% grasses and sedge, and 4.5% broadleaf plants. Vegetative production
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Kopeć, M., and K. Gondek. "The effect of long-term fertilization on the sulphur content in soil and in the mountain meadow sward (Czarny Potok)." Plant, Soil and Environment 48, No. 12 (December 22, 2011): 525–30. http://dx.doi.org/10.17221/4407-pse.

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The influence of long-term regular mineral fertilization on the soil environment considering the total sulphur and the sulphur balance in the habitat of the permanent mountain meadow was investigated. The experimental field (set up in 1968) is situated at Czarny Potok (20°8’ E, 49°4’ N) in the central part of the Polish Carpathian. With completed annual NPK fertilisation 1.8 kg S/ha was introduced into the soil. The highest sulphur amount was found in the 0–10 cm horizon and this value slightly exceeded the content considered as natural. T
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Mrkvička, J., and M. Veselá. "The influence of long-term fertilization on species diversity and yield potential of permanent meadow stand." Plant, Soil and Environment 48, No. 2 (December 21, 2011): 69–75. http://dx.doi.org/10.17221/4362-pse.

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Long-term fertilization of meadow stands affects the species composition, yields, and general pratotechnics. Observations were realised on a plane meadow of a mesophyte character in 1976–2000 years. Four variants were observed in the experiments (N0, N0P40K100, N100P40K100, N200P40K100) in four replications. Species composition of grass stands was variable in the followed period in the leaf area from 66 to 95% of the dominance (Table 1). Total abundance of species with PK-fertilization was almost identical in individual pentads (24–28 species) as it is evident in Table 2. T
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19

Lobo, Michele. "Racialised Bodies Encounter the City: ‘Long Grassers’ and Asylum Seekers in Darwin." Journal of Intercultural Studies 34, no. 4 (August 2013): 454–65. http://dx.doi.org/10.1080/07256868.2013.821722.

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Joseph, Grant S., and Colleen L. Seymour. "Madagascan highlands: originally woodland and forest containing endemic grasses, not grazing-adapted grassland." Proceedings of the Royal Society B: Biological Sciences 287, no. 1937 (October 28, 2020): 20201956. http://dx.doi.org/10.1098/rspb.2020.1956.

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Long considered a consequence of anthropogenic agropastoralism, the origin of Madagascar's central highland grassland is hotly disputed. Arguments that ancient endemic grasses formed grassland maintained by extinct grazers and fire have been persuasive. Consequent calls to repeal fire-suppression legislation, burn protected areas, and accept pastoralism as the ‘salvation’ of endemic grasses mount, even as the International Union for Conservation of Nature (IUCN) declares 98% of lemurs face extinction through fire-driven deforestation. By analysing grass data from contemporary studies, and asse
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Lazarides, M., J. Lenz, and L. Watson. "Clausospicula, a new Australian genus of grasses (Poaceae, Andropogoneae)." Australian Systematic Botany 4, no. 2 (1991): 391. http://dx.doi.org/10.1071/sb9910391.

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Clausospicula, a new monotypic genus from the Darwin and Gulf District, Northern Territory, Australia, is described and illustrated. Its diagnostic characters include cleistogamous spikelets, reduced panicles, racemes and spikelets, and pedicelled spikelets which are poorly developed and deciduous, or suppressed. Also, the glumes of the bisexual spikelet are awned and slightly keeled or without keels. A prominent feature is the extension of the peduncle into an appendage to which the callus of the bisexual spikelet is attached. The epidermis is notable for its distinct costal and intercostal z
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García, Silvina, Fabiana Pezzani, and Andrea Rodríguez-Blanco. "Long-term phosphorus fertilization effects on arbuscular mycorrhizal fungal diversity in Uruguayan grasses." Journal of soil science and plant nutrition 17, no. 4 (December 2017): 1013–27. http://dx.doi.org/10.4067/s0718-95162017000400013.

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Yao, Jin, Debra P. C. Peters, Kris M. Havstad, Robert P. Gibbens, and Jeffrey E. Herrick. "Multi-scale factors and long-term responses of Chihuahuan Desert grasses to drought." Landscape Ecology 21, no. 8 (November 2006): 1217–31. http://dx.doi.org/10.1007/s10980-006-0025-8.

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Bolger, T. P., R. Chapman, and I. F. Le Coultre. "Seed dormancy release in three common pasture grasses from a Mediterranean-type environment under contrasting conditions." Australian Journal of Experimental Agriculture 39, no. 2 (1999): 143. http://dx.doi.org/10.1071/ea98139.

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Pastures in the Mediterranean region of Australia are typically comprised of a mixture of winter annuals, including grasses and legumes, which utilise a seed bank to survive the long, dry summer. The risk of out-of-season summer rain requires species from such environments to adopt appropriate strategies to protect their seed banks. The seed bank strategies of the grasses from these environments have, so far, received little attention. We conducted an experiment to observe the dormancy release characteristics of 3 grasses common to these environments when stored under contrasting thermal regim
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Nie, Z. N., S. Miller, G. A. Moore, B. F. Hackney, S. P. Boschma, K. F. M. Reed, M. Mitchell, et al. "Field evaluation of perennial grasses and herbs in southern Australia. 2. Persistence, root characteristics and summer activity." Australian Journal of Experimental Agriculture 48, no. 4 (2008): 424. http://dx.doi.org/10.1071/ea07136.

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Field experiments were carried out at seven sites in southern Australia from 2002 to 2006 to measure changes in plant frequency, root characteristics and summer activity for a range of grass and herb species or cultivars. Annual rainfall during the experimental period was on average 75 mm lower than the long-term average. Plant frequency differed significantly between species and between sites. Temperate grasses generally had higher frequencies than subtropical grasses, native grasses and herbs. Cocksfoot (Dactylis glomerata cvv. Currie, Porto), tall wheat grass (Thinopyrum ponticum cv. Dundas
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Guangyu, Zhu, Tang Zhuangsheng, Chen Lei, Shangguan Zhouping, and Deng Lei. "Overgrazing depresses soil carbon stock through changing plant diversity in temperate grassland of the Loess Plateau." Plant, Soil and Environment 64, No. 1 (January 16, 2018): 1–6. http://dx.doi.org/10.17221/610/2017-pse.

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This study mainly estimates the effect of grazing on plant diversity and soil storages on the northern Loess Plateau of China. Four grazing intensities of ungrazed (UG), light (LG), moderate (MG), and heavy (HG) grassland were selected according to the vegetation utilization across the study area, in which plant diversity, heights, above- and belowground biomass, and soil carbon (C) stock were investigated. The results showed that overgrazing negatively affected plant growth and soil C stock. Plant cover, height, litter, above- and belowground productivity, as well as soil C stock significantl
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James, T. K., and A. Rahman. "Efficacy of preemergence herbicides on three annual grass weeds in different soils." New Zealand Plant Protection 62 (August 1, 2009): 356–62. http://dx.doi.org/10.30843/nzpp.2009.62.4812.

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Pot experiments evaluated the efficacy of several preemergence herbicides on three annual grasses that are major problem weeds in most maize growing regions Herbicides evaluated included alachlor metolachlor dimethenamid two formulations of acetochlor and proprietary mixes of acetochlor with atrazine or metribuzin Pots were filled with soil collected from the top 10 cm of seven maize (Zea mays) fields with different cropping histories and seeded with test grasses Herbicides were applied immediately after sowing with a precision glasshouse sprayer Additional seeds were sown at 2weekly intervals
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Dombrowski, James E., Brent A. Kronmiller, Vicky Hollenbeck, and Ruth C. Martin. "Transcriptome Analysis of Wounding in the Model Grass Lolium temulentum." Plants 9, no. 6 (June 22, 2020): 780. http://dx.doi.org/10.3390/plants9060780.

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For forage and turf grasses, wounding is a predominant stress that often results in extensive loss of vegetative tissues followed by rapid regrowth. Currently, little is known concerning the perception, signaling, or molecular responses associated with wound stress in forage- and turf-related grasses. A transcriptome analysis of Lolium temulentum plants subjected to severe wounding revealed 9413 upregulated and 7704 downregulated, distinct, differentially expressed genes (DEGs). Categories related to signaling, transcription, and response to stimuli were enriched in the upregulated DEGs. Speci
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Russell, JS. "Soil treatment, plant species, and management effects on improved pastures on a solodic soil in the semi-arid subtropics: 3. Improving cool season plant and cattle productivity." Australian Journal of Experimental Agriculture 34, no. 2 (1994): 145. http://dx.doi.org/10.1071/ea9940145.

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Seasonal analyses of grasses and legumes in a long-term experiment on a solodised solonetz soil (Natrustalf) in southern Queensland showed that the large liveweight losses of steers in the cool months (June-August) appeared to be broadly correlated with low plant nitrogen (N), phosphorus (P), and potassium (K) concentrations. Annual variation in the N, P, and K percentages of Rhodes grass (Chloris gayana) and volunteer grasses [medics (Medicago spp.) and siratro (Macroptilium atropurpureum)] as affected by soil and plant treatments were examined by fitting a Fourier series to the data. Cool se
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Wirt, Katie L., and Rodney G. Lym. "Effect of Aminocyclopyrachlor on Seedling Grasses." Invasive Plant Science and Management 9, no. 2 (June 2016): 87–95. http://dx.doi.org/10.1614/ipsm-d-15-00049.1.

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When invasive weeds are removed with herbicides, revegetation of native species is often desirable. The extended soil activity of aminocyclopyrachlor is important for long-term weed control but could reduce recovery of native species as well. The effect of aminocyclopyrachlor applied alone or with chlorsulfuron on cool- and warm-season grass species commonly used for revegetation was evaluated. The cool-season grasses included green needlegrass, intermediate wheatgrass, and western wheatgrass, whereas the warm-season grasses were big bluestem, sideoats grama, and switchgrass. A separate experi
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Schaller, Klaus. "Influence of Different soil Management Effects on Chemical Parameters and Soil Enzyme Activities in a Long-Time Viticultural Trial. Part I: The Lanes." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 73, no. 2 (November 30, 2016): 188. http://dx.doi.org/10.15835/buasvmcn-hort:12152.

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Soil tillage and management concepts are basic operations in viticulture because with both interventions the viticultural ecosystem can shift to a stable and sustainable production system or in worst case will partly loose its productivity and getting harmful for surrounding environments. Modern viticulture should therefor focus on stable yield and qualities but also on soil quality and environmental sound production systems.In a longterm test 5 different tillage system (control, permanent grass sod, marginal sod, extensive and intensive shallow tillage) were investigated. In the grassed plots
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Karpenko, V. P. "THE SELECTION OF PERENNIAL GRASSES – PROBLEMS AND OPPORTUNITIES." Bulletin of Uman National University of Horticulture 2 (December 2020): 47–51. http://dx.doi.org/10.31395/2310-0478-2020-2-47-51.

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Over the past decades, a third of the world’s arable land has been lost to soil erosion, and the rate of this degradation is increasing and will continue to increase with increasing production capacity boundaries. The persistent problem of soil erosion around the world has revived interest in perennial crops. All of our current crops are annuals, so developing a number of new perennial crops, legumes, and others will take a long-term effort. An analysis of the literary sources of domestic and foreign scientists has established that some cereals, such as rye, rice and sorghum, can be hybridized
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Crisp, Michael Douglas, Jim Mant, Alicia Toon, and Lyn Gai Cook. "Australian spinifex grasses: new names in Triodia for Monodia and Symplectrodia." Phytotaxa 230, no. 3 (October 13, 2015): 293. http://dx.doi.org/10.11646/phytotaxa.230.3.9.

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The Australian spinifex grasses comprise an endemic radiation (69+ species) of morphologically and ecologically distinctive plants. Many species are long-lived hummock-forming perennials that bristle with needle-like leaves. Ecologically, they resemble sclerophyll shrubs rather than grasses (Rice & Westoby 1999). They are widespread in dry communities, especially the eremaean and monsoonal (savannah) biomes, where they often dominate the landscape, particularly on oligotrophic (sandy and skeletal) substrates. Across nearly one-third of the continent, spinifex plays a dominant role in struc
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Kumar, Ashok. "Long-term Forage Yields of Five Tropical Grasses on an Extremely Sodic Soil and the Resultant Soil Amelioration." Experimental Agriculture 24, no. 1 (January 1988): 89–96. http://dx.doi.org/10.1017/s0014479700015726.

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SUMMARYA long-term field study was conducted from 1979 to 1985 in the Karnal district of Haryana, India to evaluate the effect of three rates of gypsum (0, 5.2 and 10.4 kg ha−1) on the performance of five grasses (Diplachne fusca, Panicum laevifolium, P. antidotale, Chloris gayana and Cynodon maritimus) on an extremely sodic soil with an initial pH of 10.6 and an exchangeable sodium percentage (ESP) of 94. Diplachne, Chloris and Cynodon usually gave their maximum yield in the second year of planting, P. antidotale in the third year and P. laevifolium in the fourth year. The results showed that
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D'Antonio, Carla M., R. F. Hughes, and J. T. Tunison. "Long-term impacts of invasive grasses and subsequent fire in seasonally dry Hawaiian woodlands." Ecological Applications 21, no. 5 (July 2011): 1617–28. http://dx.doi.org/10.1890/10-0638.1.

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Veldman, Joseph W., and Francis E. Putz. "Long-distance Dispersal of Invasive Grasses by Logging Vehicles in a Tropical Dry Forest." Biotropica 42, no. 6 (May 11, 2010): 697–703. http://dx.doi.org/10.1111/j.1744-7429.2010.00647.x.

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37

Reed-Dustin, Claire M., Ricardo Mata-González, and Thomas J. Rodhouse. "Long-Term Fire Effects on Native and Invasive Grasses in Protected Area Sagebrush Steppe." Rangeland Ecology & Management 69, no. 4 (July 2016): 257–64. http://dx.doi.org/10.1016/j.rama.2016.03.001.

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38

Vyshnevs'ka, O., and O. Markina. "Efficiency of measures for maintaining the productivity of meadow grasses of long-term use." Visnyk agrarnoi nauky 99, no. 7 (July 15, 2021): 24–31. http://dx.doi.org/10.31073/agrovisnyk202107-03.

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39

Bowes, G. G. "Long-term control of aspen poplar and western snowberry with dicamba and 2,4-D." Canadian Journal of Plant Science 71, no. 4 (October 1, 1991): 1121–31. http://dx.doi.org/10.4141/cjps91-154.

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Seven- and nine-year studies were conducted in northeastern Saskatchewan to compare the long-term control of aspen poplar (Populus tremuloides Michx.) and western snowberry (Symphoricarpos occidentalis Hook.) following single and multiple applications of 2,4-D ester (2,4-DE) or amine (2,4-DA) mixed with dicamba. The area was bulldozed free of trees and was subsequently invaded by aspen poplar and western snowberry regrowth, native forbs and grasses. Herbicides were applied to 2- and 4-yr-old regrowth of aspen poplar, growing with a small uniform stand of western snowberry. A single application
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40

Letts, Matthew G., Davin R. E. Johnson, and Craig A. Coburn. "Drought stress ecophysiology of shrub and grass functional groups on opposing slope aspects of a temperate grassland valley." Botany 88, no. 9 (September 2010): 850–66. http://dx.doi.org/10.1139/b10-054.

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Plant functional groups with contrasting growth strategies co-occur in semiarid ecosystems. In the northern Great Plains, woody shrubs and grasses interact competitively, with shrubs prevalent on mesic hillslopes. To understand topographic influences on physiological drought acclimation, we measured seasonal photosynthetic water use in C3 shrubs ( Artemisia cana Pursh and Rhus trilobata Nutt.) and grasses ( Agropyron cristatum (L.) Gaertn. and Stipa viridula Trin.) on north- and south-facing slopes. Relationships between abiotic controls and photosynthesis were similar on both aspects, indicat
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Brown, Rebecca Nelson, Cynthia Percivalle, Sophia Narkiewicz, and Samantha DeCuollo. "Relative Rooting Depths of Native Grasses and Amenity Grasses with Potential for Use on Roadsides in New England." HortScience 45, no. 3 (March 2010): 393–400. http://dx.doi.org/10.21273/hortsci.45.3.393.

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Erosion is a significant problem on highway embankments in Rhode Island. At present, a mixture of red fescue (Festuca rubra L.), perennial ryegrass (Lolium perenne L.), and kentucky bluegrass (Poa pratensis L.) is planted to stabilize the soil. However, only the red fescue survives long term on slopes. Red fescue is shallow-rooted, leading to sod sloughing after heavy rains. The objective of this study was to compare the rooting depth, plant height, and adaptation to roadside conditions of 16 native grasses and five amenity grasses with red fescue to identify species that could be used to redu
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Fraser, T. J., S. Dennis, R. A. Moss, K. N. Tozer, N. R. Stocker, A. L. Taylor, M. J. Faville, and C. Smith. "Long term effect of superphosphate fertilisers on pasture persistence." NZGA: Research and Practice Series 15 (January 1, 2011): 93–97. http://dx.doi.org/10.33584/rps.15.2011.3210.

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Core samples were taken from 60-year-old pastures on a long-term fertiliser trial at the Winchmore research station, in Canterbury, New Zealand. Plots had been treated with 0, 188 or 376 kg/ha of superphosphate annually, grazed by sheep, and pasture yields were recorded. Ryegrass persisted in all treatments, but was only dominant in the superphosphate treatments, unsown grasses dominated in the no superphosphate treatments. White clover was more common with superphosphate, and both cocksfoot and timothy required adequate superphosphate in order to persist. Over 60 years of measurements, yields
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Doran-Browne, Natalie A., Steven G. Bray, Ian R. Johnson, Peter J. O'Reagain, and Richard J. Eckard. "Northern Australian pasture and beef systems. 2. Validation and use of the Sustainable Grazing Systems (SGS) whole-farm biophysical model." Animal Production Science 54, no. 12 (2014): 1995. http://dx.doi.org/10.1071/an14569.

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The Sustainable Grazing Systems (SGS) model is a biophysical, mechanistic whole-farm model that simulates pasture production based on climate and soil data. While the SGS model has been extensively used for southern temperate systems, the model has yet to be evaluated for use in the tropical rangeland systems of Australia. New pasture parameter sets were developed in SGS to represent groups of grasses with the following common characteristics: (1) 3P grasses represented tropical rangeland grasses that were perennial, palatable and productive, and (2) annual tropical grasses that include both p
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Moore, G. A., T. O. Albertsen, P. Ramankutty, P. G. H. Nichols, J. W. Titterington, and P. Barrett-Lennard. "Production and persistence of subtropical grasses in environments with Mediterranean climates." Crop and Pasture Science 65, no. 8 (2014): 798. http://dx.doi.org/10.1071/cp13424.

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The agricultural region of south-west Western Australia (WA) has a Mediterranean climate, characterised by a winter-dominant rainfall pattern. Perennial subtropical grasses are increasingly being grown to increase productivity and reduce erosion on infertile sandy soils in the northern agricultural region (NAR) of WA, an area with mild winters and dry, hot summers. However, little information exists on the persistence of different species or their expected seasonal production and feed quality. On the south coast of WA, an area with dry, warm summers and a maritime influence, kikuyu (Pennisetum
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Berzins, P., S. Rancane, and A. Svarta. "The Productive Longevity Of Perennial Grasses Swards Depending On The Npk Fertilizer Rates." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 2 (August 5, 2015): 244. http://dx.doi.org/10.17770/etr2011vol2.967.

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The longevity and producing capacity of perennial grasses swards was studied on mineral soils at the LUA Research Institute of Agriculture in long-term experiment during 1974-2010. There were applied lime and mineral fertilizers with different NPK doses (0-400 kg ha-1) protractedly many years. In such way there formed soils with various content of P, K, organic matter content and pHKCl level as well. Research results showed that liming of soils and using of mineral fertilizer changed not only productivity of grass mixtures but also botanical composition. Mineral fertilizer N200P100K300 provide
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Urazova, L. D., and O. V. Litvinchuk. "TURF-FORMING GRASSES FOR THE TAIGA ZONE." Scientific Life 15, no. 8 (August 31, 2020): 1077–84. http://dx.doi.org/10.35679/1991-9476-2020-15-8-1077-1084.

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Experimental selection studies were carried out in 2016-2018. in the fields of the Narym Department of Breeding and Seed Production of the Siberian Research Institute of Agriculture and Peat (Kolpashevo, Tomsk Region). The purpose of the research was to study collection samples of lawn grasses capable of effectively using the agro-resource potential of the naturaland climatic conditions in the taiga zone of the Tomsk region. The climate in the research area is sharply continental with long, severe winters and short, but hot and often dry summers. The snow cover lasts about seven months (usuall
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Orr, D. M., and P. J. O'Reagain. "Managing for rainfall variability: impacts of grazing strategies on perennial grass dynamics in a dry tropical savanna." Rangeland Journal 33, no. 2 (2011): 209. http://dx.doi.org/10.1071/rj11032.

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Rainfall variability remains a major challenge to sustainable grazing management in northern Australia with perennial grasses the key to the stability of the resources that maintain a sustainable grazing industry. This paper describes the dynamics of five perennial grasses – Bothriochloa ewartiana (Domin) C.E. Hubb., Chrysopogon fallax S.T. Blake, Aristida spp., Panicum effusum R. Br. and Heteropogon contortus (L.) P. Beauv. ex Roem. & Schult. in relation to three grazing strategies – moderate stocking at long-term carrying capacity, heavy stocking and rotational wet season spelling. The r
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48

Johnson, W. Carroll, and Benjamin G. Mullinix. "Potential Weed Management Systems for Organic Peanut Production." Peanut Science 35, no. 1 (January 1, 2008): 67–72. http://dx.doi.org/10.3146/ps01-007.1.

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Abstract Studies were conducted near Tifton, GA to develop weed management systems for organic peanut production. Trials in 2004 and 2005 evaluated row patterns (two levels), remedial weed control (four levels), and cultivation (three levels). Row patterns were wide rows (91 cm apart) and narrow rows (30 cm apart). Remedial weed control was early-season applications of clove oil, citric plus acetic acid, broadcast propane flaming, and a nontreated control. Cultivation regimes were 1X or 2X sweep cultivation and a non-cultivated control. The experimental sites had heavy natural infestations of
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Alemseged, Y., D. R. Kemp, G. W. King, D. L. Michalk, and M. Goodacre. "The influence of grazing management on the competitiveness, persistence and productivity of chicory (Cichorium intybus L.)." Australian Journal of Experimental Agriculture 43, no. 2 (2003): 127. http://dx.doi.org/10.1071/ea01042.

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Chicory is a highly productive and nutritious forage that is sensitive to grazing. A challenge for grazing management is to prevent pasture decline associated with the replacement of productive species by undesirable weedy species. The competitive ability, persistence and productivity of chicory were investigated under a gradient of grazing management practices ranging from continuous to short grazing–long rest treatments by merino wethers. Chicory density and percentage composition declined after the first year of continuous grazing. The density of chicory in all rotationally grazed treatment
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Pimentel, Manuel, Elvira Sahuquillo, Zeltia Torrecilla, Magnus Popp, Pilar Catalán, and Christian Brochmann. "Hybridization and long-distance colonization at different time scales: towards resolution of long-term controversies in the sweet vernal grasses (Anthoxanthum)." Annals of Botany 112, no. 6 (August 1, 2013): 1015–30. http://dx.doi.org/10.1093/aob/mct170.

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