Soil Resources of Central Otago

Brash, D.W.; Beecroft, F. G.

doi:10.33584/jnzg.1987.48.1801

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…As such it provides a hostile environment for farming with dry summers and long cold winters (120 days with little or no growth). The geology of the region includes broad intermontane basins between block uplift mountains (Brash & Beecroft 1987). The mountain regions have higher rainfall, increasing with altitude, but shorter growing seasons, restricted by temperature and snowfall.…”

Section: Introductionmentioning

confidence: 99%

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Understanding the role of spring grazing of lucerne in the Central Otago environment

Stevens

Thompson²,

Carruthers³

et al. 2012

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The Lucerne for Lambs Sustainable Farming Fund project used on-farm data and whole-farm modelling to help farmers understand the impact of increasing the amount of grazing dryland lucerne on Central Otago farms. On-farm results from 2 years showed that spring stocking rate on lucerne-based pasture averaged 10 ewes and their lambs per hectare compared with 3 ewes and their lambs on dryland grass-based pasture. Lamb growth rate was approximately 50 g/day higher on lucerne-based pastures, resulting in a total lamb production of 358 kg liveweight/ha at weaning compared with 108 kg liveweight/ha on grass-based pastures. Whole-farm modelling showed that increased profitability could be achieved by the addition of significant areas of grazing lucerne. Profitability increased by $119/ha on a 5000 ha traditional merino property. Profitability of a 522 ha partially irrigated valley floor property running crossbred ewes was increased by $249/ha. Using lucerne for spring grazing also reduced the impacts of both winter and summer droughts in the variable conditions of Central Otago. Keywords: dryland, lamb growth, lucerne, modelling, profitability, stocking rate, whole farm systems.

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Section: Introductionmentioning

confidence: 99%

“…lucerne is used in these systems in several ways. Basal soils of the valley floor have a natural pH of 6-7 (Brash & Beecroft 1987). Often lucerne is used on soils with low soil moisture holding capacity to maximise the production of these areas of the farm.…”

Section: Introductionmentioning

confidence: 99%

Understanding the role of spring grazing of lucerne in the Central Otago environment

Stevens

Thompson²,

Carruthers³

et al. 2012

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“…An experiment to test the agronomic value of subterranean clover was established in February 2016 on the infertile 'Red Flats' of Omarama Station in the Mackenzie Basin, New Zealand (GPS coordinates are -44.503479, 169.902127, 477 m a.s.l.). The flats were formed from alluvial schist and greywacke gravel deposits (Brash & Beecroft 1987). The resulting Mackenzie soils (Pallic Orthic Brown) are shallow (depth 20-45 cm) and well drained which results in low plant available water (30 -60 mm in the top 1 m) (S-MAP 2017).…”

Section: Methodology and Analysismentioning

confidence: 99%

Establishment, production and regeneration of subterranean clovers in the Mackenzie Basin, New Zealand

Olykan

Lucas

Teixeira

et al. 2018

Journal of NZ Grasslands

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The ‘Red Flats’ on Omarama Station in the Mackenzie Basin, has a winter cold, summer dry environment and soils with low plant available water (<60 mm in the top 1 m), and low pH(H2O) (5.2) and high aluminium (8 mg/kg) below 75 mm. The site received 3 t of lime, 300 kg sulphur-super, boron (B), molybdenum (Mo) and herbicides to eliminate hieracium (Hieracium pilosella). Twelve cultivars of subterranean clover (Trifolium subterraneaum), ‘Bolta’ balansa clover (T. michelianum), and perennial ‘Rossi’ red clover (T. pratense), were direct-drilled in February 2016. Over the next 3 years their frost tolerance, productivity and persistence were compared with the resident haresfoot clover (T. arvense). Balansa and the subterranean clovers all survived the 2016 and 2017 winters. The subterranean clovers maximum yield was 4.3 t DM/ ha after successful germination in February 2016 when sufficient rain extended the spring growing season into November. Subterranean clover cultivars from subspecies subterraneum yielded well in 2016, averaging 3.3 t DM/ha, as did the brachycalycinum ‘Antas’ with 3 t DM/ha. During the short season of 2017, the subterraneum ssp. cultivars ‘Denmark’ and ‘Karridale’ established the highest ground covers and ‘Antas’ the lowest. In 2018, ‘Antas’ had the lowest emergence rate and autumn yield. ‘Karridale’ had the highest re-establishment rate and the yanninicum ‘Trikkala’ the highest autumn yield (1.3 t DM/ha). Cultivars with low hardseededness ratings were the most successful at re-establishment in autumn 2017. Balansa clover was also persistent. In the favourable 2016 growing season the late-flowering resident haresfoot clover grew into early summer and yielded 3.7 t DM/ha. Red clover yielded 1 t DM/ha in 2016, but did not persist. Results suggest that medium-late flowering softer seeded subterranean clover cultivars and ‘Bolta’ balansa clover, are suitable for this environment.

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“…These soils are frequently associated with short tussock/scrubland vegetation cover and are, on average, below FC for more than five months and below PWP for 1 to 5 months i.e. are sub-hygrous (Brash & Beecroft 1987).…”

Section: Soilsmentioning

confidence: 99%

Central Otago - Built on gold, growing on grass.

Wills¹

2014

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A warm welcome to our "World of Difference" to all delegates attending this conference - we hope your stay is enjoyable and that you will leave Central Otago with an enhanced appreciation of the diversity of land use and the resilient and growing economic potential that this region has to offer. Without regional wellbeing the national economy will struggle to grow, something Central Government finally seems to be realising, and the Central Otago District Council Long Term Plan 2012-2022 (LTP) signals the importance of establishing a productive economy for the local community which will aid in the economic growth of the district and seeks to create a thriving economy that will be attractive to business and residents alike. Two key principles that underpin the LTP are sustainability and affordability, with the definition of sustainability being "… development that meets the needs of the present without compromising the ability of future generations to meet their own needs."

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Soil Resources of Central Otago

Cited by 6 publications

References 5 publications

Understanding the role of spring grazing of lucerne in the Central Otago environment

Understanding the role of spring grazing of lucerne in the Central Otago environment

Establishment, production and regeneration of subterranean clovers in the Mackenzie Basin, New Zealand

Central Otago - Built on gold, growing on grass.

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