Sodium and potassium content of topdressed pastures in New Zealand in relation to plant and animal nutrition

Smith, G. S.; Middleton, K. R.

doi:10.1080/03015521.1978.10426046

Cited by 30 publications

(18 citation statements)

References 20 publications

(18 reference statements)

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“…At both sites, K levels were well in excess of the optimum range required for plant growth, a finding similar to that reported by Smith & Middleton (1978) and indicative of the high degree of soil and pasture development and intensive grazing management at both sites.…”

Section: Plant Analysessupporting

confidence: 73%

Seasonal variation in soil tests and nutrient content of pasture at two sites in Taranaki

Roberts¹

1987

New Zealand Journal of Experimental Agriculture

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Two sites in Taranaki on well developed, grazed pasture with generous fertiliser histories were selected for monitoring changes over time in Ministry of Agriculture and Fisheries soil Quick Test values and nutrient levels in mixed pasture. Soil samples were taken at 14-day intervals, and plant samples every 28 days, over a 3-year period. Large temporal variations in soil Quick Test values occurred but few seasonal trends were evident. Obvious seasonal trends occurred with plant N, S, P, and Ca, with less well defined seasonal variations in K and Mg contents. There was no correlation between soil test values and plant mineral composition for Ca, K, P, and Mg except at Stratford in the summer period. Plant mineral composition in relation to animal requirements is briefly discussed.

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Section: Plant Analysessupporting

confidence: 73%

Seasonal variation in soil tests and nutrient content of pasture at two sites in Taranaki

Roberts¹

1987

New Zealand Journal of Experimental Agriculture

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“…Data from Pearson et al (1985); Hughes et al (1988); Reeves and Fulkerson (1996); Davison et al (1997);Fulkerson et al (1998Fulkerson et al ( , 1999; Granzin (2003Granzin ( , 2004; Malleson et al (2009) The substantial deficiency of Na is not unexpected. Based on an experimental study, Smith et al (1978) classified a wide range of pasture plants in terms of their ability to translocate Na into their aerial parts. They coined the terminology natrophobic to describe those species that accumulate Na in the roots but have low levels in the shoots and natrophilic for species that show the opposite behaviour.…”

Section: Nutritive Value Of Kikuyu-based Pasturesmentioning

confidence: 99%

Kikuyu-based pasture for dairy production: a review

et al. 2014

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The amount of pasture grown and converted to animal product is closely linked with the profitability of pasturebased systems. Kikuyu (Pennisetum clandestinum Hochst. ex Chiov.) is the predominant C 4 grass in coastal Australian beef and dairy systems. These kikuyu-based production systems face several key challenges to achieving high levels of productivity. In this review, we bring together the literature to highlight the opportunities for closing the gap between current and potential utilisation and for increasing dairy production from kikuyu-based pastures. More specifically, we highlight the significant gains that can be made on kikuyu-based commercial farms based on a conceptual model to show where the main losses originate, namely input and grazing management. The physical limitations associated with kikuyu for dairy systems are also presented, such as the relatively higher content of cell wall and lower content of water-soluble carbohydrates, together with nutrient imbalances relative to other grass species. Together, these limitations clearly indicate the need of supplying cows with supplements (particularly grain-based concentrates) to achieve moderate to high milk yield per cow. To achieve this without compromising pasture utilisation, dairy producers farming on kikuyu-based pastures need to use relatively greater stocking rates to generate enough demand of feed that can be used to align rate of pasture intake with rate of pasture growth, creating enough deficit of feed per cow to justify the addition of supplementary feed without impinging on pasture utilisation. The variability that exists between cows in kikuyu dry matter and neutral detergent fibre intake is also highlighted in this review, opening up new avenues of research that may allow significant productivity gains for kikuyu-based dairy farming in the future.

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“…The Na concentration in mixed pasture was adequate for sheep, beef, and dairy cattle (Smith 1977), and the mean concentration of 0.27% (Table 4) was higher than the North Island average of 0.20% reported by Smith et al (1982).…”

Section: Major Elementsmentioning

confidence: 68%

Soil and pasture nutrient status on yellow-brown earth soils of the West Coast, South Island

Morton

Hannagan

1983

New Zealand Journal of Experimental Agriculture

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the West Coast of the South Island was carried out to assess the soil and pasture nutrient status. Significant but weak correlations were found between soil and pasture nutrient concentrations, previous applications of nutrients in fertiliser, and pasture fertility index. The results indicated the degree of nutrient deficiencies, and these are discussed in relation to current fertiliser practice. Concentrations of major and trace elements measured in mixed pasture samples were generally all above the minimum level for fattening lambs, except for cobalt where 22% of the samples were below. For lactating dairy cows, the proportion of samples below the minimum level was 21% for cobalt, 20% for zinc, 53% for magnesium, and 46% for phosphorus, but there was no field evidence that these low pasture nutrient concentrations were causing problems on the farms surveyed.

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Sodium and potassium content of topdressed pastures in New Zealand in relation to plant and animal nutrition

Cited by 30 publications

References 20 publications

Seasonal variation in soil tests and nutrient content of pasture at two sites in Taranaki

Seasonal variation in soil tests and nutrient content of pasture at two sites in Taranaki

Kikuyu-based pasture for dairy production: a review

Soil and pasture nutrient status on yellow-brown earth soils of the West Coast, South Island

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