Eragrostis curvula (Schrad.) Nees. complex pastures in southern New South Wales, Australia: a comparison of Eragrostis curvula cv. Consol and Medicago sativa L. cv. Nova under intensive rotational management

2005 ◽  
Vol 45 (10) ◽  
pp. 1255 ◽  
Author(s):  
W. H. Johnston ◽  
P. S. Cornish ◽  
T. B. Koen ◽  
V. F. Shoemark
Keyword(s):  
Medicago Sativa ◽  
Plant Density ◽  
New South ◽  
New South Wales ◽  
Trifolium Subterraneum ◽  
Wagga Wagga ◽  
Sheep Grazing ◽  
Eragrostis Curvula ◽  
South Wales ◽  
Average Plant

The productivity, carrying capacity and liveweight performance of wether sheep grazing pastures of Eragrostis curvula cv. Consol and Medicago sativa cv. Nova, which were also sown with annual grasses and Trifolium subterraneum, were compared under an intensive 4-paddock rotational grazing regime in a ‘put-and-take’ grazing experiment at Wagga Wagga, New South Wales from November 1993 to August 1996. The productivity of the pastures was broadly similar, with production peaks of >1000 kg/ha in winter and >3000 kg/ha in spring and summer in paddocks that had been spelled for 6 weeks. Although annual species contributed a high proportion of the total herbage mass in spring, over the remainder of the year, both pastures were dominated by their respective perennials. E. curvula maintained an average plant density of approximately 20 plants/m2. The density of M. sativa declined noticeably during the 3 years, and at the end of the experiment M. sativa plants in 1 replicate of the experiment were killed by rising groundwater and dryland salinity. The long-term average stocking rate of E. curvula and M. sativa pastures were similar (12.1 v. 12.5 sheep/ha) and both pastures were capable of sustaining high stocking rates for lengthy periods in spring and summer. Sheep grazing M. sativa tended to be heavier than animals grazing E. curvula, and they produced, on average, 1.1 kg (or 21%) more wool. However, M. sativa was more difficult to establish and its costs for weed and insect control were higher. Therefore, although it was more productive, it might not have been the most economically viable of the 2 pastures. The implications of the findings were discussed within a whole-farm context and it was concluded that E. curvula has a complimentary role to M. sativa for sowing on landscapes and in situations to which M. sativa is poorly adapted.

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

2005 ◽  
Vol 45 (4) ◽  
pp. 401 ◽  
Author(s):  
W. H. Johnston ◽  
P. S. Cornish ◽  
V. F. Shoemark
Keyword(s):  
Medicago Sativa ◽  
New South ◽  
New South Wales ◽  
The Other ◽  
Wagga Wagga ◽  
Rotational Grazing ◽  
Phalaris Aquatica ◽  
Eragrostis Curvula ◽  
South Wales ◽  
Wide Range

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 during their growing seasons. Throughout the study, the pastures were dominated by their respective sown perennial species, however, a suite of desirable and undesirable annual grasses and annual legumes usually contributed >20% of total herbage mass in spring. The P. aquatica pasture contained a higher proportion of weedy species than the other pastures, especially C4 grasses and broadleafed species, and towards the end of the experiment it was also invaded by several native perennial grasses. Overall, the wool yield from the M. sativa pasture was 0.5–1.0 kg/animal.year higher than the other pastures. Management to minimise herbage accumulation on the E. curvula pastures was a key issue, and provided that pastures were grazed heavily, this was achieved by the rotational grazing strategy used in the experiment. It was concluded that palatable varieties of E. curvula have a useful and complementary role as perennial pastures in southern Australia. By increasing herbage availability in summer and autumn, E. curvula may improve management flexibility for a wide range of pastures that are commonly grown on farms.

Palatability to sheep of the Eragrostis curvula complex. 3. A comparison of naturalised and selected taxa

1988 ◽  
Vol 28 (1) ◽  
pp. 53 ◽  
Author(s):  
WH Johnston
Keyword(s):  
New South ◽  
New South Wales ◽  
Wagga Wagga ◽  
Eragrostis Curvula ◽  
South Wales ◽  
Stocking Rates ◽  
Relative Palatability

The palatability of 20 accessions of E. curvula collected from naturalised populations in New South Wales was compared on 7 occasions with 2 selected accessions previously found to be highly palatable. The experiment was conducted at Wagga Wagga, N.S.W., between January 198 1 and July 1983. The relative palatability of most accessions was substantially similar from rating to rating, despite differences in the extent to which the trial was grazed. Palatability was related to the agronomic group to which the accessions belonged. For the naturalised taxa, Curvula was ranked equal to Tall Chloromelas. but both were more palatable than Short Chloromelas. The naturalised accessions were all less palatable than the selected accessions. It was concluded that the selected accessions were sufficiently palatable to be well utilised in pastures by stock grazing at commercial stocking rates.

Use of herbicides for selective removal of Eragrostis curvula (Schrad.) Nees from a Phalaris aquatica pasture

1985 ◽  
Vol 25 (3) ◽  
pp. 665 ◽  
Author(s):  
MH Campbell ◽  
JJ Dellow ◽  
MJ Keys ◽  
AR Gilmour
Keyword(s):  
Maximum Rate ◽  
New South ◽  
New South Wales ◽  
Ground Cover ◽  
Trifolium Subterraneum ◽  
Selective Removal ◽  
Main Experiment ◽  
Phalaris Aquatica ◽  
Eragrostis Curvula ◽  
South Wales

In the main experiment, the effectiveness of tetrapion, glyphosate and 2,2-DPA in selectively removing Eragrostis curvula from a Phalaris aquatica pasture was determined by applying each at three rates in July 1980, September 1980, December 1980 and March 1981 near Braidwood, New South Wales. Auxiliary experiments were conducted from April 1981 to April 1983 to determine the reliability of herbicide effect on E. curvula. Tetrapion (2.25 and 3.375 kg/ha a.i.) was the most effective herbicide in killing E. curvula and promoting P. aquatica and Trifolium subterraneum. It was more selective when applied in September 1980 and December 1980 than when applied in July 1980 or March 198 1. Re-infestation by E. curvula seedlings in the 3 years after spraying with tetrapion amounted to a maximum of 3% of ground cover. In the auxiliary experiments, tetrapion was effective on all nine occasions of application, which demonstrated its reliability and effectiveness at any time of the year. Glyphosate (1.08 and 1.62 kg/ha a.i.) was effective in killing E. curvula in March 1981 but this result could not be repeated in March 1982 or March 1983 or in nine other applications at other times in these years. 2,2-DPA (maximum rate 22.2 kg/ha a.i.) was ineffective in killing E. curvula at four times of application. Recovery of the P. aquatica pasture after treatment declined in the order: tetrapion >2,2-DPA>glyphosate.

Palatability to sheep of the Eragrostis curvula complex. 2. Selection of palatable taxa

1988 ◽  
Vol 28 (1) ◽  
pp. 47 ◽  
Author(s):  
WH Johnston
Keyword(s):  
Rating Scale ◽  
New South ◽  
New South Wales ◽  
Wagga Wagga ◽  
Visual Rating ◽  
Eragrostis Curvula ◽  
South Wales ◽  
Visual Rating Scale ◽  
Relative Palatability ◽  
Selection Of

Relative palatability of 12 previously selected taxa of Eragrostis curvula complex was assessed using a visual rating scale of 0 (not grazed) to 10 (completely grazed). Visual ratings were converted to ranks and the most and least palatable lines were compared over 19 grazing assessments in trials at Wagga Wagga, Temora and Orange, New South Wales. Three highly palatable and 2 acceptably palatable accessions were identified. The importance of palatability in the E. curvula complex is discussed.

Production and persistence of six lucerne cultivars at Narrabri, NSW

1970 ◽  
Vol 10 (47) ◽  
pp. 745 ◽  
Author(s):  
TE Launders
Keyword(s):  
Medicago Sativa ◽  
Dry Matter ◽  
Plant Density ◽  
New South ◽  
New South Wales ◽  
Higher Plant ◽  
The Third ◽  
South Wales ◽  
Matter Production ◽  
Type C

Seasonal yields and persistence of Hunter River and three introduced lucerne (Medicago sativa) cultivars (African, Du Puits, and Hairy Peruvian) were compared with two C.S.I.R.O.-bred lines, a hay type (C.1212) and a creeping type (Cancreep), over a five-year period between 1963 and 1968 under dryland conditions at Narrabri, New South Wales. After two years, Hunter River had significantly higher plant density than all other cultivars. By maintaining this superiority throughout the experiment, it was never exceeded in dry matter production in any season after the third summer. Spring yields of Cancreep compared favourably with Hunter River for three seasons, and there was little difference between most cultivars for four summers. Cancreep and Hairy Peruvian matched Hunter River in autumn-winter production for two seasons. In all cases decline in production during the third and fourth years is attributed to a lack of persistence in cultivars other than Hunter River.

Beef production from lucerne and subterranean clover pastures. 3. Composition and quality of the diet selected

1980 ◽  
Vol 20 (107) ◽  
pp. 695 ◽  
Author(s):  
DG Hall ◽  
RD FitzGerald ◽  
EC Wolfe ◽  
BR Cullis
Keyword(s):  
Medicago Sativa ◽  
Nitrogen Content ◽  
New South ◽  
New South Wales ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Late Autumn ◽  
Nitrogen Levels ◽  
South Wales

During 1976 and 1977 in southern New South Wales, diet samples were obtained at approximately 3-week intervals from oesophageally fistulated steers grazing a lucerne (Medicago sativa) and subterranean clover (Trifolium subterraneum) pasture (LC) and a subterranean clover (C) pasture. On LC, green lucerne was the predominant diet component for much of the 2 years. On C, the diet consisted mainly of dry material during a drought in autumn-winter 1976, green wireweed (Polygonurn aviculare) until late autumn 1977, green clover and grass in winter and spring 1977, and finally dry material again. During 1976 and early 1977, diets on LC had a higher digestibility (61.7% vs 49.4%) and nitrogen content (2.55% vs 2.04%) than those on C. This difference was due to the contribution of lucerne on LC, and also because the wireweed on C was of very low quality, even when green. During the latter part of 1977, LC and C had equivalent digestibility and nitrogen levels. The information on the diets helped explain changes in liveweight and the incidence of bloat of cattle grazing the plots.

Comparison of the performance of subterranean clover cultivars in southern New South Wales. 1. Persistence, productivity, and seed yields

1993 ◽  
Vol 33 (5) ◽  
pp. 581 ◽  
Author(s):  
BS Dear ◽  
PD Cregan ◽  
GM Murray
Keyword(s):  
Seed Set ◽  
Plant Density ◽  
New South ◽  
New South Wales ◽  
Subterranean Clover ◽  
Wagga Wagga ◽  
Hard Seed ◽  
South Wales ◽  
Seed Reserves ◽  
Seed Yields

The density, productivity, flowering characteristics, and seed reserves of 14 lines (10 cultivars and 4 experimental lines) of subterranean clover were observed over 5 years (1983-87) on a red earth soil at Wagga Wagga, New South Wales. Plant density increased from 149-318 plants/m2 in 1983 to 1975-13925 plants/m'n 1987. Herbage yields of all cultivars during autumn-winter were similar in most years except in July 1985 when Seaton Park was superior. Cultivars in the midseason or later flowering groups were more productive in late spring and better able to utilise the extended growing seasons that occur periodically in this environment. The mean time from emergence to 5% flowering of all cultivars was 168 days with March germination in 1985 but decreased to 13.5 days with May germination in 1986. The number of days to flowering at Wagga Wagga was highly correlated with maturity ranking at Perth (r2 = 0.92 in 1985 and? = 0.93 in 1986). In the first year, average seed set was 295 kg seed/ha. but by summer of the fourth year the seed pool ranged from 124 kg/ha for Clare to 1190 kg/ha for Nungarin, the earliest flowering cultivar. The quantity of hard seed that carried over to the next year varied significantly between cultivars, with Enfield, Woogenellup, and Clare having the least, and Nungarin, Northam, Dalkeith, and Daliak the most. Seed set was related to maturity ranking only in 1984, although root disease probably affected seed yields in 1985-86. The proportion of hard seed that carried over was much higher than expected, particularly in soft-seeded cultivars. The newly released cultivar Junee was well adapted to the environment; it was later maturing than the recommended cultivar Seaton Park but was able to maintain high seed reserves. Karridale, another new cultivar, maintained higher seed reserves than the older Mount Barker.

A comparison of the reproductive performance of ewes grazing Dwalganup of Bacchus Marsh subterranean clover of a mixture of lucerne and burr medic, before and during mating

1965 ◽  
Vol 5 (17) ◽  
pp. 106 ◽  
Author(s):  
NT Clark
Keyword(s):  
Reproductive Performance ◽  
New South ◽  
New South Wales ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Wagga Wagga ◽  
South Wales ◽  
Burr Medic ◽  
Bio Assay

At Wagga Wagga, New South Wales, three groups, each of 90 Border Leicester x Merino ewes, were grazed for two and a half weeks before joining, and for the six weeks of joining on pastures dominated by Dwalganup subterranean clover (Trifolium subterraneum L.), Bacchus Marsh subterranean clover, and lucerne-medic. Lambing percentages were Dwalganup 74, Bacchus Marsh 30, and lucerne-medic 93. The percentages of non-pregnant ewes were 47, 30, and 33 in the Dwalganup, Bacchus Marsh, and lucerne groups respectively. These results are compared with bio-assay values for the oestrogenic potency of the pastures.

scholarly journals Evaluating the information content of National ASTER Geoscience Maps in the Wagga Wagga and Cobar regions of New South Wales

Preview ◽  
2014 ◽  
Vol 2014 (171) ◽  
pp. 45-49 ◽  
Author(s):  
Robert Hewson ◽  
David Robson
Keyword(s):  
Information Content ◽  
New South ◽  
New South Wales ◽  
Wagga Wagga ◽  
South Wales
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