Hill country farm investment options - cocksfoot pasture vs. superphosphate fertiliser

Barker, D. J.; Sheppard, D.; Mackay, A.D.; Dymock, N.

doi:10.33584/jnzg.1999.61.2349

Cited by 9 publications

(5 citation statements)

References 12 publications

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“…The aim has been to manipulate the botanical composition of pasture swards towards the dominance of a few species with desirable animal forage characteristics (in terms of dry matter production, seasonal growth patterns and tissue digestibility). Consequently, much of New Zealand's pasture cultivar development and use has not only been dominated by a few species, mainly perennial ryegrass, Lolium perenne and white clover, Trifolium repens (Charlton and Stewart, 1999), but also to a lesser extent species such as cocksfoot, Dactylis glomerata (Barker et al. , 1985, 1999) and subterranean clover, T. subterraneum (Dodd et al.…”

Section: Introductionmentioning

confidence: 99%

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Plant diversity effects on herbage production and compositional changes in New Zealand hill country pastures

Dodd

Barker

Wedderburn

2004

Grass and Forage Science

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A small-plot field experiment on grazed hill country pastures in the North Island of New Zealand was conducted to examine the productivity and compositional characteristics of swards in response to variation in pasture species diversity. The balanced incomplete factorial design incorporated variation in location, slope, soil fertility and combinations of eight plant functional groups (C 4 grasses, annual grasses, annual legumes, perennial C 3 grasses, perennial legumes, perennial forbs, ryegrass and browntop). Net herbage accumulation and botanical composition were measured at 18 months (spring) and 24 months (autumn) after oversowing following application of a systemic herbicide. Analysis of variance indicated a significant positive relationship between the number of functional groups sown and herbage accumulation of the sown species in spring, but not with total herbage accumulation. Regression analysis showed that herbage accumulation was also affected by the identity of the functional groups. However, the statistical models indicated that pasture productivity was most strongly influenced by site factors. There was a significant negative relationship between both the number and herbage accumulation of unsown species and the number of functional groups sown, indicating a positive relationship between diversity and resistance to invasion by unsown species. A comparison of the vegetation between the plots before and after oversowing showed that those more diverse prior to sowing returned to their initial composition more rapidly, evidence that diverse vegetation was more resilient in the face of disturbance.

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Section: Introductionmentioning

confidence: 99%

“…This approach has met with mixed success in hill country. Persistent gains in productivity and shifts in species composition have been demonstrated following the introduction of new species (Barker et al. , 1993, 1999).…”

Section: Introductionmentioning

confidence: 99%

Plant diversity effects on herbage production and compositional changes in New Zealand hill country pastures

Dodd

Barker

Wedderburn

2004

Grass and Forage Science

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“…Stevens et al (2000) showed that farm profitability increased substantially in Southland where new pasture performance peaked at 2 to 4 years; and the advantages over the original sward lasted for 10 to 14 years. Studies by Webby et al 1990 andBarker et al 1999 showed that new pasture species could be established to advantage in hill country. However, changes in seasonality of feed supply and feed quality do not necessarily have to occur through pasture improvement.…”

Section: Discussionmentioning

confidence: 99%

The impacts of change in forage quality and seasonality on sheep farm profitability

Webby¹,

Sheath²

2000

ProNZG

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benefits of altering the quality and seasonality of pasture supply in sheep farming enterprises. Three representative regions in New Zealand were studied; winter-cold and summer-wet (e.g., Southland, Otago and Central North Island); winter-cold, summer-dry (e.g., South Island East Coast); and winter-warm, summer-dry (e.g., North Island East Coast). Two different lamb-finishing enterprises were also analysed within each region; a conventional system where the lamb supply pattern was aligned with feed availability, and a supply contract system where more lambs were supplied for processing outside the normal season. Improving the seasonality of feed supply increased gross margins by $26 to $126 per hectare depending on the region. The greatest gains from improved seasonality occurred in the winter-cold scenarios. Improving forage quality had a more positive impact than improved seasonality changes with gross margins increasing by $53 to $148 per hectare depending on region. Overall the impact of the forage supply and forage quality changes was similar for the two lamb-finishing systems. Keywords: lamb-finishing, pasture production, pasture quality, systems analysis

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“…The inclusion of sociological research acknowledges that people play an extremely important part in the Field et al 1981;McCall et al 1986;Marshall et al 1991;Webby et al 1995;Rollo et al 1996;Woodward et al 2000;Ridler et al 2001;Woodward et al 2001;Rendel et al 2013;Spooner & Li 2013 Economic Beck & Dent 1987;Marshall et al 1991;Webby et al 1995;Ridler et al 2001;Rendel et al 2013 Environmental Synge et al 2013;Vogeler et al 2014White et al 2010Dynes et al 2011;Mackay et al 2012McCall 1984aMcCall 1984b;McCall et al 1986;Journeaux et al 1987;Parker et al 1992;Barker & Baars 1993;Stevens et al 2000;Webby & Sheath 2000;Murray et al 2007;White et al 2010;Dynes et al 2011;Mackay et al 2012;Beck & Dent 1987Journeaux et al 1987;Parker et al 1992;Korte & Rhodes 1993;Dake 1994;Barker et al 1999;Ormond et al 2002;Stevens et al 2000;Webby & Sheath 2000;White et al 2010;Dynes et al 2011;…”

Section: Sociology Researchmentioning

confidence: 99%

Farming systems research: purpose, history and impact in New Zealand hill country

Stevens¹,

Casey²,

Cousins³

2016

NZGA R&P Series

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A review of the literature accessed 234 papers that referenced farm or farming systems research in New Zealand hill country. These were categorised into resource allocation/productivity, modelling, farm studies and sociology. Sociology was further categorised into social, cultural, resilience, policy and regulation, and system behaviour and change. Farming systems research developed over the 5 decades studied from 9 papers in 1960-1975, to a peak of 60 papers during the 1986-1995 decade. The number of papers accessed during the latest decade, 2006-2015, was 57. The focus of research has changed significantly from an initial emphasis on biophysical processes and productivity, peaking in the 1976-1985 decade and then tapering off. This provided data for the development of models that could generate many more comparisons at lower cost. Modelling of the biophysical farm and economic outcomes has been steady through the decades from 1986 to present. The impacts of policy and regulation have featured strongly in the 1986-1995 decade after agricultural deregulation, and again in the 2006-2015 decade as consumer and societal concerns about the environment have emerged. Resilience of the farming system, encompassing production, economic, social and environmental trade-offs, has emerged as a topic being most prevalent in the most recent decade from 2006-2015. The discipline of farm systems research has also matured over this time as a greater range of research techniques, over a wider range of subject matter have been applied. An evolution of the discipline has also seen the integration of the principles of complex adaptive systems into the work. Keywords: cultural, economic, environmental, farm systems, modelling, policy, production, regulation, resilience, social

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Hill country farm investment options - cocksfoot pasture vs. superphosphate fertiliser

Cited by 9 publications

References 12 publications

Plant diversity effects on herbage production and compositional changes in New Zealand hill country pastures

Plant diversity effects on herbage production and compositional changes in New Zealand hill country pastures

The impacts of change in forage quality and seasonality on sheep farm profitability

Farming systems research: purpose, history and impact in New Zealand hill country

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