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Artykuły w czasopismach na temat „Perennial pastures”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 3 lutego 2022

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1

Li, G. D., K. R. Helyar, C. M. Evans, M. C. Wilson, L. J. C. Castleman, R. P. Fisher, B. R. Cullis, and M. K. Conyers. "Effects of lime on the botanical composition of pasture over nine years in a field experiment on the south-western slopes of New South Wales." Australian Journal of Experimental Agriculture 43, no. 1 (2003): 61. http://dx.doi.org/10.1071/ea01194.

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Two permanent pastures (annual pasture v. perennial pasture) were established in 1992 as part of the long-term field experiment, MASTER — Managing Acid Soils Through Efficient Rotations. The primary objective of the experiment was to develop an agricultural system that is economically viable and environmentally sustainable on the highly acidic soils in south-eastern Australia. This paper reports on the effects of lime on the botanical composition changes of annual and perennial pastures over 9 years. In general, lime increased the proportion of the desirable species, such as phalaris (Phalaris

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White, R. E., K. R. Helyar, A. M. Ridley, D. Chen, L. K. Heng, J. Evans, R. Fisher, et al. "Soil factors affecting the sustainability and productivity of perennial and annual pastures in the high rainfall zone of south-eastern Australia." Australian Journal of Experimental Agriculture 40, no. 2 (2000): 267. http://dx.doi.org/10.1071/ea98013.

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A field study was carried out in the high rainfall zone (HRZ, >600 mm p.a.) of southern Australia from March 1994 to August 1997 to test the hypothesis that sown perennial grasses and liming could make the existing pastures more sustainable through better use of water and nitrogen. The site, on an acid duplex soil at Book Book near Wagga Wagga in southern New South Wales, was typical of much of the HRZ grazing country in southern New South Wales and north-east Victoria. The experiment consisted of 4 replicate paddocks (each 0.135 ha) of 4 treatments: annual pasture (mainly ryegrass Lolium r

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Li, G. D., K. R. Helyar, S. J. Welham, M. K. Conyers, L. J. C. Castleman, R. P. Fisher, C. M. Evans, B. R. Cullis, and P. D. Cregan. "Pasture and sheep responses to lime application in a grazing experiment in a high-rainfall area, south-eastern Australia. I. Pasture production." Australian Journal of Agricultural Research 57, no. 10 (2006): 1045. http://dx.doi.org/10.1071/ar05298.

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‘Managing Acid Soils Through Efficient Rotations (MASTER)’ is a long-term pasture–crop rotation experiment commenced in 1992. One of the objectives was to demonstrate the extent of crop, pasture, and animal responses to lime on a typical acidic soil in the 500–800 mm rainfall zone in south-eastern Australia. Two types of pastures (perennial v. annual pastures) with or without lime application were established in 1992. This paper presents the results of the pasture dry matter (DM) responses to lime application over 6 years from 1992 to 1997. Results showed that both perennial and annual pasture

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Saul, Geoffrey, Gavin Kearney, and Dion Borg. "Pasture systems to improve productivity of sheep in south-western Victoria. 1. Growth, composition, nutritive value and persistence of resown pastures." Animal Production Science 49, no. 8 (2009): 654. http://dx.doi.org/10.1071/ea06142.

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Two pasture systems were compared at five on-farm sites across south-western Victoria between 1990 and 1996. The ‘typical’ pasture treatment mimicked the pasture and grazing management common in the region, with volunteer annual-based pastures fertilised with around 5 kg/ha phosphorus (P) each year. The ‘upgraded’ pasture treatments were resown to phalaris, perennial ryegrass and subterranean clover, and higher rates of fertiliser (13–25 kg P/ha.year) plus other nutrients were applied. Both pastures were set stocked with the participating farmers breeding ewes. Stocking rate was an emergent va

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Kemp, D. R., and P. M. Dowling. "Towards sustainable temperate perennial pastures." Australian Journal of Experimental Agriculture 40, no. 2 (2000): 125. http://dx.doi.org/10.1071/ea98003.

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Naturalised pastures across the higher rainfall (>600 mm) perennial pasture zone of south-eastern Australia are less productive than they were, while sown pastures fail to maintain their initial levels of production. Several factors have contributed to this, including lack of knowledge of suitable grazing practices, weed invasion, increasing acid soils, rising water tables and poor management practices during droughts. A key issue in each case is the decline in perennial grass species which is both a cause and effect of the decline in productivity and sustainability of these ecosystems. Thi

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CHEN, G., G. D. LI, M. K. CONYERS, and B. R. CULLIS. "LONG-TERM LIMING REGIME INCREASES PRIME LAMB PRODUCTION ON ACID SOILS." Experimental Agriculture 45, no. 2 (April 2009): 221–34. http://dx.doi.org/10.1017/s0014479708007497.

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SUMMARYPrime lamb live weight response to lime application on pasture was measured in a grazing experiment in the high rainfall zone of the southwestern slopes of New South Wales, Australia. The pastures were limed every 6 years over 15 years. First cross South African Meat Merino lambs were used as test animals. Pre- and post-grazing pasture dry matter (DM) yield, botanical composition, feed quality and lamb live weight were monitored over 12 weeks in 2007. Results showed that liming significantly increased pasture DM yield of high quality species and improved overall pasture quality due to i

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Li, G. D., K. R. Helyar, M. K. Conyers, L. J. C. Castleman, R. P. Fisher, G. J. Poile, C. J. Lisle, B. R. Cullis, and P. D. Cregan. "Pasture and sheep responses to lime application in a grazing experiment in a high-rainfall area, south-eastern Australia. II. Liveweight gain and wool production." Australian Journal of Agricultural Research 57, no. 10 (2006): 1057. http://dx.doi.org/10.1071/ar05299.

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‘Managing Acid Soils Through Efficient Rotations (MASTER)’ is a long-term pasture–crop rotation experiment commenced in 1992. One of the objectives was to demonstrate the extent of crop, pasture, and animal responses to lime application on a typical acidic soil in the 500–800 mm rainfall zone of south-eastern Australia. Two types of pastures (perennial v. annual pastures) with or without lime application were established in 1992. Fifteen- to eighteen-month-old Merino hoggets were used as test animals and were changed annually. This paper reports the results of sheep responses to liming from th

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Ward, G. N., S. G. Clark, G. A. Kearney, M. R. McCaskill, M. C. Raeside, A. R. Lawson, and R. Behrendt. "Summer-active perennials in pasture systems improve seasonal pasture distribution without compromising winter-spring production." Crop and Pasture Science 64, no. 7 (2013): 673. http://dx.doi.org/10.1071/cp13003.

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Improved dryland pastures for sheep and beef cattle production in south-western Victoria are typically based on summer-dormant cultivars of perennial ryegrass (Lolium perenne L.) or phalaris (Phalaris aquatica L.). These are highly productive in spring but exhibit low accumulation rates over summer–autumn. Summer-active perennial pasture species could potentially alleviate this summer–autumn feed gap. Three pasture systems that used different pastures on each of the three landscape classes (crest, slope, and valley floor) were compared over 4 years. The perennial ryegrass system (henceforth Ry

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Moore, Andrew D. "The case for and against perennial forages in the Australian sheep–wheat zone: modelling livestock production, business risk and environmental interactions." Animal Production Science 54, no. 12 (2014): 2029. http://dx.doi.org/10.1071/an14613.

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Perennial forages have been proposed as a means of ameliorating both the summer–autumn feed gap and the risks posed by soil salinity and erosion in mixed farming areas of southern Australia. Whole-farm simulation analyses using the APSIM and GRAZPLAN models at nine locations across southern Australia have evaluated the likely trade-offs among expected profitability, financial risk, soil erosion risk, deep drainage and soil carbon change as annual pastures are converted to perennial pastures based on a C3 grass, a C4 grass or lucerne. Differences between perennial and annual feedbases in total

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Musgrave, D. J. "Non-ryegrass pastures - the science and farmer practice." NZGA: Research and Practice Series 15 (January 1, 2011): 163–67. http://dx.doi.org/10.33584/rps.15.2011.3192.

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A review of recently published science demonstrates that relatively simple non-perennial ryegrass mixtures have performed well in environments as diverse as under deer grazing in Dunedin and the Manawatu, under sheep grazing in dryland mid-Canterbury, and under both irrigated and dryland dairy cow grazing in the Waikato and Northland. Animal productivity has been lifted by up to 30% in milk solids and 50% in deer liveweight gain in non-perennial ryegrass mixtures compared to perennial ryegrass-based pastures. In some cases, the ryegrass pasture has produced similar or more dry matter, yet anim

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Vere, D., and P. Dowling. "An economic analysis of sown pasture trends on the tablelands of south-eastern New South Wales." Rangeland Journal 25, no. 1 (2003): 56. http://dx.doi.org/10.1071/rj03005.

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The latter part of the 20th century has seen a persistent decline in the productivity of some types of sown pastures on the central and southern tablelands of New South Wales. Currently, much research effort is directed to stabilising the perennial grass component of these pastures. This paper evaluates the economic justification of that emphasis. It is argued that trends in livestock production can usefully represent increases or decreases in the stocks of three broad categories of sown pastures that are defined as being those pastures sown to introduced perennial grasses and legumes (perenni

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Lawson, A. R., and K. B. Kelly. "Responses to the renovation of an irrigated perennial pasture in northern Victoria. 1. Pasture consumption and nutritive characteristics." Australian Journal of Experimental Agriculture 47, no. 2 (2007): 149. http://dx.doi.org/10.1071/ea05258.

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A field experiment was established in northern Victoria in the autumn of 1999 to quantify the effects of renovating a 15-year-old irrigated perennial pasture which had a high paspalum content [>40% dry matter (DM)] in summer. The treatments were: (i) control, the existing pasture; (ii) oversown, in which the existing pasture was grazed, topped and direct drilled; and (iii) resown, in which the existing pasture was sprayed, cultivated and sown with a new pasture. The grass species used in both renovation treatments were perennial ryegrass, Italian ryegrass and tall fescue. The treatments wer

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Elliott, D. E., and R. J. Abbott. "Nitrogen fertiliser use on rain-fed pasture in the Mt Lofty Ranges, SouthAustralia. 2. Responses of perennial grasses, Tama ryegrass, andsod-sown oats to nitrogen fertiliser and cutting frequency." Australian Journal of Experimental Agriculture 43, no. 6 (2003): 579. http://dx.doi.org/10.1071/ea01132.

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Two series of experiments were conducted in the Mt Lofty Ranges, South Australia, to examine, in a grass–subterranean clover pasture, the contribution of the companion grass to herbage mass and the responsiveness to the application of nitrogen (N) fertiliser. The first study examined the responsiveness, to a single rate of N, of grass–clover pastures containing either Tama ryegrass, sod-sown oats or 1 of 4 perennial grasses, viz. Victorian perennial ryegrass, Demeter fescue, Currie cocksfoot or Australian phalaris. These were compared in 2 experiments, under 3��different cutting frequencies at

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Jones, Roger A. C. "Virus diseases of perennial pasture legumes in Australia: incidences, losses, epidemiology, and management." Crop and Pasture Science 64, no. 3 (2013): 199. http://dx.doi.org/10.1071/cp13108.

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This article reviews current knowledge for Australia over the occurrence, losses caused, epidemiology, and management of virus diseases of perennial pasture legumes. Currently, 24 viruses have been found infecting perennial pasture legumes, and one or more viruses have been detected in 21 of these species. These viruses are transmitted by insect vectors, non-persistently or persistently, by contact or via seed. Their modes of transmission are critical factors determining their incidences within pastures in different climatic zones. Large-scale national or state surveys of lucerne (alfalfa) (Me

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Thompson, A. N., A. J. Kennedy, J. Holmes, and G. Kearney. "Arrowleaf clover improves lamb growth rates in late spring and early summer compared with subterranean clover pastures in south-west Victoria." Animal Production Science 50, no. 8 (2010): 807. http://dx.doi.org/10.1071/an09100.

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The profitable production of lamb from pasture-based systems is dependent on high levels of pasture production being efficiently utilised by sheep of superior genetic merit. Pastures that can extend the pasture-growing season and provide high quality feed in late spring and summer have the potential to increase production efficiency and the proportion of lambs that meet market specifications. In this paper we tested the hypothesis that arrowleaf clover (cv. Arrotas), a cultivar selected for late maturity, would supply feed of higher nutritive value than conventional annual legumes and perennia

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Bird, P. R., T. T. Jackson, G. A. Kearney, G. R. Saul, R. A. Waller, and G. Whipp. "The effect of improved pastures and grazing management on soil water storage on a basaltic plains site in south-west Victoria." Australian Journal of Experimental Agriculture 44, no. 6 (2004): 559. http://dx.doi.org/10.1071/ea03019.

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Soil salinity of non-irrigated farmlands in Australia has been largely attributed to tree clearing and their replacement by annual pasture and crop species. This paper deals with the effects of sowing perennial ryegrass and greater inputs of fertiliser, and the effect of grazing management, on water use and the potential to improve recharge control on a gravelly soil derived from basalt.In 1991, neutron access tubes were inserted into plots on a project established in 1989 to examine the impact of upgrading the pasture on sheep productivity. These plots were subdivided in 1996 to examine the i

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Burnett, V. F., G. R. Seymour, S. Norng, J. L. Jacobs, and E. N. Ponnampalam. "Lamb growth performance and carcass weight from rotationally grazed perennial pasture systems compared with annual pasture systems with supplements." Animal Production Science 52, no. 4 (2012): 248. http://dx.doi.org/10.1071/an11053.

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Annual pastures used to finish lambs can decline in herbage nutritive value (NV) from January to April in the temperate zone. If lambs are to be finished to market specifications for carcass weight during this period, the use of summer-active perennial pastures or supplementation of annual pastures, is required. The present study investigated liveweight (LW) gain and carcass characteristics of lambs finished on perennial pastures compared with annual pastures and supplementation. Fifty-four second-cross lambs were allocated to one of the following four treatments in an asymmetric split-plot de

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Reed, K. F. M., J. R. Walsh, P. A. Cross, N. M. McFarlane, and M. A. Sprague. "Ryegrass endophyte (Neotyphodium lolii) alkaloids and mineral concentrations in perennial ryegrass (Lolium perenne) from southwest Victorian pasture." Australian Journal of Experimental Agriculture 44, no. 12 (2004): 1185. http://dx.doi.org/10.1071/ea03242.

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On all of 120 farms in south-west Victoria that were selected at random and sampled during autumn and winter over 2 years, perennial ryegrass was present in the pasture and tested positive for the presence of the naturally occurring ryegrass endophyte, Neotyphodium lolii (mean frequency 78%). Ryegrass staggers were reported on 33% (1999) and 43% (2000) of the surveyed farms. Clinically significant concentrations of lolitrem B were detected in perennial ryegrass samples with concentrations in the range 0–4.44 mg/kg. Concentration exceeded 1.8 mg/kg in 37% of pastures indicating an inherent, wid

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Vere, D. T., R. E. Jones, and M. H. Campbell. "The economics of temperate pasture systems on the central and southern Tablelands of New South Wales." Rangeland Journal 23, no. 2 (2001): 159. http://dx.doi.org/10.1071/rj01003.

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Pastures are the basis of most forms of agricultural production on the New South Wales central and southern tablelands. Pastures occupy the bulk of the region's landmass and pasture-based livestock production annually contributes more than three-quarters of the regional gross value of rural production. Throughout the region, there is substantial variation in pasture composition, ranging from high quality introduced perennial grasses and legumes to pastures comprising mainly low quality native species. This paper examines the economics of the main categories of temperate pastures over a range o

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McKirdy, SJ, BA Coutts, and RAC Jones. "Occurrence of bean yellow mosaic virus in subterranean clover pastures and perennial native legumes." Australian Journal of Agricultural Research 45, no. 1 (1994): 183. http://dx.doi.org/10.1071/ar9940183.

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In 1990, infection with bean yellow mosaic virus (BYMV) was widespread in subterranean clover (Trifolium subterraneum) pastures in the south-west of Western Australia. When 100 leaves were sampled at random per pasture, the virus was detected by ELISA in 23 of 87 pastures and incidences of infection ranged from 1 to 64%. BYMV was present in all seven districts surveyed, but highest incidences of infection occurred in the Busselton district. In smaller surveys in 1989 and 1992, incidences of infection in pastures were higher than in 1990, and ranged up to 90%. In 1992, when petals from 1703 sam

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Michalk, D. L., P. M. Dowling, D. R. Kemp, W. McG King, I. J. Packer, P. J. Holst, R. E. Jones, et al. "Sustainable grazing systems for the Central Tablelands, New South Wales." Australian Journal of Experimental Agriculture 43, no. 8 (2003): 861. http://dx.doi.org/10.1071/ea02180.

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Pasture degradation is a major issue in the high rainfall zone (>600 mm) of temperate Australia. Characterised by a decline in the perennial grass component, this degradation is responsible for reduced livestock production and implicated in environmental problems, such as dryland salinity, through changed water-use patterns. This paper reports on a multi-disciplinary research program conducted at Carcoar in central New South Wales, one of 6 sites that comprised the Sustainable Grazing Systems National Experiment. The aim of the experiment was to develop more profitable and sustainable pastu

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McIvor, JG, and CJ Gardener. "Germinable soil seed banks in native pastures in north-eastern Australia." Australian Journal of Experimental Agriculture 34, no. 8 (1994): 1113. http://dx.doi.org/10.1071/ea9941113.

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Germinable soil seed banks were determined in 20 native pasture communities of widely varying composition (dominated by native tussock grasses, Bothriochloa pertusa, or forbs) near Collinsville (20�34'S, 147�51'E). Samples of surface soil (0-10 cm) were taken during the late dry season, seeds were germinated in a shadehouse, and seedlings were identified and counted. Over all pastures there were seeds of 100 species in the seed banks, including 29 grasses (14 perennial), 11 legumes, 8 sedges, and 52 forbs. Total seed numbers varied among pastures from 210 to 9770/m2. Forbs were the most numero

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Jones, Roger A. C. "Virus diseases of pasture grasses in Australia: incidences, losses, epidemiology, and management." Crop and Pasture Science 64, no. 3 (2013): 216. http://dx.doi.org/10.1071/cp13134.

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This paper reviews current knowledge for Australia over the occurrence, losses caused, epidemiology, and management of virus diseases of pasture grasses. It also reviews all records of viruses in wild grasses likely to act as alternative host reservoirs for virus spread to nearby pastures or crops. Currently, 21 viruses have been found infecting 36 pasture or forage grass species and 59 wild grass species. These viruses are transmitted by arthropod vectors (mites or insects) or, in one instance, via grass seeds. Their modes of transmission are critical factors determining their incidences with

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Li, Guangdi D., Richard C. Hayes, Jeff I. McCormick, Matthew J. Gardner, Graeme A. Sandral, and Brian S. Dear. "Time of sowing and the presence of a cover-crop determine the productivity and persistence of perennial pastures in mixed farming systems." Crop and Pasture Science 65, no. 10 (2014): 988. http://dx.doi.org/10.1071/cp13447.

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Incorporation of perennial pastures into cropping rotations can improve whole-farm productivity, profitability and sustainability of mixed farming systems in southern Australia. However, success in establishing perennial pastures depends on choice of species, time of sowing, method of establishment, seasonal conditions, and whether sowing is under a cover-crop. Field experiments were sown from 2008 to 2010 to determine effects of sowing time and the presence of a cover-crop on the performance of four perennial pasture species, lucerne (Medicago sativa L.), chicory (Cichorium intybus L.), phala

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Lawes, R. A., and M. J. Robertson. "Effect of subtropical perennial grass pastures on nutrients and carbon in coarse-textured soils in a Mediterranean climate." Soil Research 50, no. 7 (2012): 551. http://dx.doi.org/10.1071/sr11320.

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In the northern agricultural region of Western Australia, some farmers have integrated C4 grass pastures into their farming system. This switch away from a farming system historically dominated by annual species could alter soil nutrient and carbon (C) levels. To explore this issue, 16 ‘over-the-fence’, pair-wise comparisons were conducted between a field in an annual crop–pasture rotation and a field sown to perennial pasture. The perennial pastures were 2–8 years of age, and comprised a mix of perennial species and volunteer annuals. Soils were deep yellow sand (Tenosols), and perennial root

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Wims, C. M., C. I. Ludemann, H. Phillips, and D. F. Chapman. "The economic value to dairy systems of genetic gains in the nutritive value of perennial ryegrass in grass–clover pastures." Animal Production Science 57, no. 7 (2017): 1357. http://dx.doi.org/10.1071/an16487.

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Perennial ryegrass (Lolium perenne L.) breeding efforts have focussed on improving pasture nutritive value by altering flowering behaviour and increasing ploidy. However, the gains in farm profitability that this has delivered are not known. The flowering behaviour, botanical composition and nutritive value of pastures based on 24 perennial ryegrass cultivar–endophyte combinations released in New Zealand since 1970 were compared under grazing for 3 years in the Waikato region of New Zealand. Cultivars were grouped into the following three functional groups for data analysis: mid-season-heading

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Angus, J. F., T. P. Bolger, J. A. Kirkegaard, and M. B. Peoples. "Nitrogen mineralisation in relation to previous crops and pastures." Soil Research 44, no. 4 (2006): 355. http://dx.doi.org/10.1071/sr05138.

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Most of the nitrogen (N) used by Australian crops is mineralised from the residues of previous crops and pastures. Net N mineralisation was studied in 2 field experiments in southern NSW, one comparing different residue-management and tillage systems during continuous cropping and the other comparing residues of annual and perennial pastures in a pasture–crop system. After 14 years of continuous cropping, soil total N concentration had decreased by 50%. Neither stubble retention nor direct drilling affected potential N mineralisation or the decrease in total N. However, soil mineral N in the f

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Ataja, A. M., P. R. Wilson, T. N. Barry, J. Hodgson, R. M. Hoskinson, W. J. Parker, and R. W. Purchas. "Early venison production from red deer (Cervus elaphus) as affected by grazing perennial or annual ryegrass pastures, pasture surface height and immunization against melatonin." Journal of Agricultural Science 118, no. 3 (June 1992): 353–69. http://dx.doi.org/10.1017/s0021859600070726.

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SUMMARYTwo grazing experiments in New Zealand, using newly weaned red deer stags, assessed methods of maximizing growth over winter and spring, with the objective of attaining a slaughter weight of 92 kg liveweight (> 50 kg carcass) at the end of spring, by 12 months of age. Perennial ryegrass/white clover pastures, and the same direct-drilled with an annual ryegrass, were grazed at two surface heights (5 cm and 10 cm; Experiment 1; 1988) or at similar pasture mass (Experiment 2; 1989). Balanced groups of stags grazing each forage were immunized against melatonin, commencing at 3 months of

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Keim, J. P., I. F. López, and R. Berthiaume. "Nutritive value, in vitro fermentation and methane production of perennial pastures as affected by botanical composition over a growing season in the south of Chile." Animal Production Science 54, no. 5 (2014): 598. http://dx.doi.org/10.1071/an13026.

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Permanent pastures have been shown to produce similar herbage masses and nutrient contents to perennial ryegrass pastures. To the best of our knowledge, little research has been conducted on the ruminal fermentation of permanent pastures. Our objective was to evaluate the effect of botanical composition of four perennial pastures during a growing season in the south of Chile [winter, September 2010 ‘S1’; spring, November 2010 ‘S2’; and summer, January 2011 ‘S3’]: on in vitro fermentation products using a batch culture system. The perennial pastures studied included: permanent (PP), permanent f

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Dear, B. S., J. M. Virgona, G. A. Sandral, A. D. Swan, and S. Morris. "Changes in soil mineral nitrogen, nitrogen leached, and surface pH under annual and perennial pasture species." Crop and Pasture Science 60, no. 10 (2009): 975. http://dx.doi.org/10.1071/cp09026.

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Soil mineral nitrogen (N) profiles during the growing season and changes in total soil N and available N after 3–4 years were examined under 9 different pasture swards containing annual legumes, lucerne (Medicago sativa L.), or one of 4 perennial grasses at 2 sites representative of the low and medium rainfall belt of south-eastern Australia. The effect of the presence of phalaris (Phalaris aquatica L.) or lucerne on the spatial variation in surface pH was also measured. The 9 pastures were subterranean clover (Trifolium subterraneum L.), subterranean clover with annual weeds, yellow serradell

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Swan, A. D., M. B. Peoples, R. C. Hayes, G. D. Li, G. R. Casburn, J. I. McCormick, and B. S. Dear. "Farmer experience with perennial pastures in the mixed farming areas of southern New South Wales: on-farm participatory research investigating pasture establishment with cover-cropping." Crop and Pasture Science 65, no. 10 (2014): 973. http://dx.doi.org/10.1071/cp13448.

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In 2009, 95 farmers in the mixed farming zone of southern New South Wales (NSW), average annual rainfall 450–700 mm, were surveyed about their use of perennial pasture species. Survey responses indicated that, on average, 52% of land was under crop, 29% contained perennial pasture and 19% annual pastures. The proportion of land sown to perennial pastures and the species used differed with rainfall. Farmers identified concerns about the cost of establishment and poor survival of perennial pasture species as constraints to wider adoption. The survey also revealed that cover-cropping (sowing past

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Chan, K. Y., A. M. Bowman, W. Smith, and R. Ashley. "Restoring soil fertility of degraded hardsetting soils in semi-arid areas with different pastures." Australian Journal of Experimental Agriculture 41, no. 4 (2001): 507. http://dx.doi.org/10.1071/ea00052.

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To evaluate the effectiveness of a pasture phase in restoring soil fertility, changes in concentration of organic carbon, physical and chemical properties of degraded hardsetting red soils (Alfisols) were assessed at 3 sites in the semi-arid central western region of New South Wales 3–4 years after conversion to different pastures. The pasture species included an annual grass, ryegrass (Lolium rigidum cv. Wimmera), an annual legume, barrel medic (Medicago truncatulata cv. Sephi) as well as a perennial grass, Consol lovegrass (Eragrostis curvula), and a perennial legume, lucerne (Medicago sativ

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Johnston, W. H., P. S. Cornish, and V. F. Shoemark. "Eragrostis curvula (Schrad.) Nees. complex pastures in southern New South Wales, Australia: a comparison with Medicago sativa L. and Phalaris aquatica L. pastures under rotational grazing." Australian Journal of Experimental Agriculture 45, no. 4 (2005): 401. http://dx.doi.org/10.1071/ea03117.

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A grazing experiment conducted in Wagga Wagga (New South Wales) from September 1993 to September 1998 compared the productivity of pastures containing 3 palatable types of summer-active Eragrostis curvula complex, with pastures containing either Medicago sativa or Phalaris aquatica. Issues relating to the management of E. curvula pastures were also investigated. Herbage growth rates of the P. aquatica and M. sativa pastures were highest in winter and spring; E. curvula pastures were most productive in summer and autumn. Stocking rates equivalent to 30–40 dry sheep were carried by the pastures

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Vickery, P. J., M. J. Hill, and G. E. Donald. "Satellite derived maps of pasture growth status: association of classification with botanical composition." Australian Journal of Experimental Agriculture 37, no. 5 (1997): 547. http://dx.doi.org/10.1071/ea97014.

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Summary. Spectral data from the green, red and near-infrared bands of Landsat MSS and Landsat TM satellite imagery acquired in mid-spring were classified into 3 and 6 pasture growth classes respectively. The classifications were compared with a site database of botanical composition for the Northern Tablelands of New South Wales to examine the association between spectral growth class and pasture composition. Pastures ranged in composition from unimproved native perennial grasses through semi-improved mixtures of native and naturalised grasses and legumes to highly improved temperate perennial

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Pembleton, Keith G., Katherine N. Tozer, Grant R. Edwards, Joe L. Jacobs, and Lydia R. Turner. "Simple versus diverse pastures: opportunities and challenges in dairy systems." Animal Production Science 55, no. 7 (2015): 893. http://dx.doi.org/10.1071/an14816.

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For Australian and New Zealand dairy farms, the primary source of home-grown feed comes from grazed perennial pastures. The high utilisation of perennial pasture is a key factor in the low cost of production of Australian and New Zealand dairy systems and, hence, in their ability to maintain international competiveness. The major pasture species used are perennial ryegrass (Lolium perenne L.) and white clover (Trifolium repens L.), normally grown in a simple binary mixture. As pasture production has been further driven by increasing use of nitrogen fertiliser and irrigation, farms are getting

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Vere, D. T., R. E. Jones, and M. H. Campbell. "Long-term change in the economic productivity of four major pasture categories on the south-eastern Tablelands of New South Wales." Rangeland Journal 23, no. 2 (2001): 148. http://dx.doi.org/10.1071/rj01002.

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The perception of change or decline in the productivity of temperate pastures in south-eastern Australia is an important concern to livestock producers and pasture scientists. Much of this concern relates to reductions in the proportions of desirable species in the composition of pasture systems as a result of increased soil and weed problems. The purpose of this paper is to investigate trends in the long-term economic productivity of four categories of temperate pastures (all introduced pastures, introduced perennial grasses, introduced legumes and all native pastures) on the central and sout

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Ridley, AM, WJ Slattery, KR Helyar, and A. Cowling. "Acidification under grazed annual and perennial grass based pastures." Australian Journal of Experimental Agriculture 30, no. 4 (1990): 539. http://dx.doi.org/10.1071/ea9900539.

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Soil samples to a depth of 60 cm were collected from adjacent, 39-year-old, phalaris-based and annual pasture fields on an acid soil at Rutherglen, north-eastern Victoria. The fields had similar histories of fertiliser application and stock enterprise. Minimum net acid addition rates were determined under both pasture types, and the soil under annual pasture showed greater acidification. Carbon cycle acid addition contributed 1.3 1 and 1.36 kmol H+/ha.year to net acid addition on annual and phalaris pastures, respectively. Because slow alkaline soil reactions in the field contribute to bufferi

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McCallum, M. H., J. A. Kirkegaard, T. W. Green, H. P. Cresswell, S. L. Davies, J. F. Angus, and M. B. Peoples. "Improved subsoil macroporosity following perennial pastures." Australian Journal of Experimental Agriculture 44, no. 3 (2004): 299. http://dx.doi.org/10.1071/ea03076.

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Biopores left in the soil by perennial and annual pastures and their effects on macroporosity, water infiltration and the water use and productivity of subsequent wheat and canola crops were investigated in a field experiment on a Sodosol in southern New South Wales. Phases of both lucerne (4 years) and phalaris (10 years) improved the macroporosity and water infiltration into the dense B horizon compared with continuous annual crops and pastures. After removal of lucerne and phalaris, the subsoil (> 12 cm depth) contained similar numbers of pores > 2 mm diameter (228 and 190/m2, respect

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Lodge, G. M., M. A. Brennan, S. Harden, and S. P. Boschma. "Changes in soil water content under annual, perennial, and shrub-based pastures in an intermittently dry, summer-rainfall environment." Crop and Pasture Science 61, no. 4 (2010): 331. http://dx.doi.org/10.1071/cp09258.

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Soil water content (SWC) was monitored in an intermittently dry environment in 2003–08, for the following pasture types: perennial ryegrass (Lolium perenne cv. Skippy), lucerne (Medicago sativa cv. Venus), phalaris (Phalaris aquatica cv. Atlas PG), a lucerne/phalaris mixture, digit grass (Digitaria eriantha ssp. eriantha cv. Premier), and old man saltbush (Atriplex nummalaria). Perennial ryegrass and phalaris pastures persisted until late winter–early spring 2005 and, after that time, were maintained as degraded annual grass pastures and bare fallows, respectively. For all pasture types, mean

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Hughes, J. D., I. J. Packer, D. L. Michalk, P. M. Dowling, W. McG King, S. Brisbane, G. D. Millar, S. M. Priest, D. R. Kemp, and T. B. Koen. "Sustainable grazing systems for the Central Tablelands of New South Wales. 4. Soil water dynamics and runoff events for differently-managed pasture types." Australian Journal of Experimental Agriculture 46, no. 4 (2006): 483. http://dx.doi.org/10.1071/ea04269.

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Soil water, runoff amount and quality, pasture production and environmental data were measured for a pastoral prime lamb enterprise in the Central Tablelands of New South Wales from 1998 to 2002. There were 4 pasture treatments: fertilised and sown chicory (CH), fertilised and sown introduced pastures (SP), fertilised naturalised pastures (FN) and unfertilised naturalised pastures (UN). Two grazing management regimes, tactically grazed (TG) and continuously grazed (CG) were imposed on the SP, FN and UN treatments. The CH treatment was rotationally grazed. To compare pasture and grazing system

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Ridley, A. M., R. J. Simpson, and R. E. White. "Nitrate leaching under phalaris, cocksfoot, and annual ryegrass pastures and implications for soil acidification." Australian Journal of Agricultural Research 50, no. 1 (1999): 55. http://dx.doi.org/10.1071/a98038.

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Nitrogen uptake and nitrate (NO-3) leaching below 1.1 m was estimated under phalaris, cocksfoot, and annual ryegrass pastures and under bare fallow in a 4-year field experiment under control and high N (500 kg N/ha) treatments in north-eastern Victoria (693 mm/year rainfall for the study period). The perennial grasses, particularly phalaris, took up more N in herbage than annual ryegrass. High concentrations of NO3-N were measured at 1 m depth below all treatments, suggesting that NO3- losses from pastures have potential to contaminate streams and/or groundwater. Perennial pastures were only a

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Fillery, I. R. P., and R. E. Poulter. "Use of long-season annual legumes and herbaceous perennials in pastures to manage deep drainage in acidic sandy soils in Western Australia." Australian Journal of Agricultural Research 57, no. 3 (2006): 297. http://dx.doi.org/10.1071/ar04278.

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The effect of including phases of long-growing-season annuals and herbaceous perennial pastures on water use was examined at 2 sites (deep sand and duplex soil) in Western Australia. Herbaceous perennials used were lucerne (Medicago sativa), and a mix of C3 grasses comprising phalaris (Phalaris aquatica), tall wheat grass (Thinopryum ponticum), and tall fescue (Festuca arundinacea) (perennial grass treatment). The long-season annual treatment was a mix of yellow and pink serradella (Ornithopus sp.) and Casbah biserrula (Biserrula pelecinus). These treatments were compared with annual-based pas

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Kemp, DR, and PM Dowling. "Species distribution within improved pastures over central N.S.W. in relation to rainfall and altitude." Australian Journal of Agricultural Research 42, no. 4 (1991): 647. http://dx.doi.org/10.1071/ar9910647.

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Botanical composition has a large influence on pasture productivity, but little information is available about the botanical composition of pastures on farms, the interactions of species or reasons for their distribution. A survey was done, during two successive springs and using a point quadrat method, of the botanical composition of improved pastures in central New South Wales and maps prepared of the proportion of species or groups of species in pastures. The survey area covered a wide range in rainfall (600-1000 mm), altitude (300-1400 m) and the boundary where perennial and annual pasture

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Ussher, G. R., and D. E. Hume. "Sustainable perennial pastures in Northland." Journal of New Zealand Grasslands 77 (January 1, 2015): 141–46. http://dx.doi.org/10.33584/jnzg.2015.77.489.

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In the northern half of Northland, perennial ryegrassbased pastures have exhibited poor persistence. Nineteen tall fescue and ryegrass pastures in the region infected with either MaxP or AR37 fungal endophytes, respectively, had high levels of endophyte-infected tillers and low levels of contamination from wild endophytes. On surveyed farms, MaxP-infected tall fescue pastures had good contents of sown grass, which were higher than sown grass contents in AR37-infected ryegrass pastures, but on two far-north monitor farms these temperate grasses failed to compete with summer active C4 grasses su

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Grekul, Chad W., and Edward W. Bork. "Herbage Yield Losses in Perennial Pasture Due to Canada Thistle (Cirsium arvense)." Weed Technology 18, no. 3 (September 2004): 784–94. http://dx.doi.org/10.1614/wt-03-196r.

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Although the impact of Canada thistle (CT) on annual crop production is relatively well established, few investigations report on this weed's impact within perennial pastures. This field study assessed herbage yield losses within eight central Alberta pastures from 1999 to 2001. Each pasture was sampled in 1999 to quantify thistle and herbage biomass within 25 permanent plots. CT was controlled in 2000 and the response of vegetation measured in 2000 and 2001. Before removal, significant negative relationships (P < 0.05) between thistle abundance and herbage were noted at six sites. After th

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Lodge, G. M. "Studies of soil seedbanks in native and sown pastures in northern New South Wales." Rangeland Journal 23, no. 2 (2001): 204. http://dx.doi.org/10.1071/rj01007.

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Total and germinable soil seedbanks (litter and soil) were studied for a native pasture and three sown pastures (dominated by Phalaris aquatica L. cv. Sirosa) in northern New South Wales from 1993 to 1996. Soil core samples were taken from continuously grazed plots for both pasture types and two oversown treatments in the native pasture and from a spring-autumn rest treatment at the sown pasture sites. At each site above ground herbage mass was also estimated regularly as part of the Temperate Pasture Sustainability Key Program. For all sites and treatments, the proportion of germinable seeds

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Mitchell, GJ, RJ Carter, and SR Chinner. "Studies on the control of water-dropwort (Oenanthe pimpinelloides) in South Australia." Australian Journal of Experimental Agriculture 35, no. 4 (1995): 483. http://dx.doi.org/10.1071/ea9950483.

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Water-dropwort (Oenanthe pimpinelloides L.), a tuberous perennial herb, is currently known in South Australia from only a single locality in the Mount Lofty Ranges. There is little information on water-dropwort control, and 2 experiments were conducted to assess the effects of sowing pasture, with or without presowing herbicides, on the control of this weed. Phalaris (Phalaris aquatica L.) and perennial clovers were successfully introduced into infested pastures by direct drilling in autumn. Water-dropwort regenerated from seed more densely in unsown plots than plots of established perennial p

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Kemp, D. R., D. L. Michalk, and J. M. Virgona. "Towards more sustainable pastures: lessons learnt." Australian Journal of Experimental Agriculture 40, no. 2 (2000): 343. http://dx.doi.org/10.1071/ea99001.

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The Temperate Pasture Sustainability Key Program (TPSKP) was established across south-eastern Australia to test the hypotheses that an improved perennial grass content in pastures would result in fewer weeds, better water use (and hence lesser impacts on soil salinity), and lower soil acidification rates. Grazing tactics were seen as a means to enhance or maintain the perennial grass content. Soil and water sustainability experiments in summer and winter dominant rainfall environments showed fewer weeds, improvements in water use and less acidity under perennial versus annual grass pastures. F

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Lawson, A. R., P. W. G. Sale, and K. B. Kelly. "Effect of defoliation frequency on an irrigated perennial pasture in northern Victoria. 1. Seasonal production and sward composition." Australian Journal of Agricultural Research 48, no. 6 (1997): 811. http://dx.doi.org/10.1071/a96088.

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A field experiment was carried out to investigate whether changes in winter and post-winter defoliation frequency would increase the white clover content of an irrigated perennial ryegrass–white clover pasture in northern Victoria. Pastures defoliated every 4 weeks during winter had higher white clover growing point (stolon apices with at least 2 nodes) density at the end of winter than pastures defoliated every 8 weeks or those receiving a single defoliation after 16 weeks, but these differences did not affect the clover content in the spring. Reasons for this are suggested. Pastures defoliat

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Bowen, M. K., F. Chudleigh, S. Buck, and K. Hopkins. "Productivity and profitability of forage options for beef production in the subtropics of northern Australia." Animal Production Science 58, no. 2 (2018): 332. http://dx.doi.org/10.1071/an16180.

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This study measured forage biomass production, diet quality, cattle liveweight gain, and economic performance of six forage types at 21 sites across 12 commercial beef cattle properties in the Fitzroy River catchment of Queensland during 2011–2014 (28 annual datasets in total). The forages were annual forage crops (oats (Avena sativa), sorghum (Sorghum spp.) and lablab (Lablab purpureus)), sown perennial legume-grass pastures (leucaena-grass (Leucaena leucocephala spp. glabrata + perennial, tropical grass (C4) species) and butterfly pea-grass (Clitoria ternatea + perennial, C4, grass species))

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