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Thursday, July 9, 2020 | History

1 edition of Nitrogen fixation in New Zealand pastures found in the catalog.

Nitrogen fixation in New Zealand pastures

Nitrogen fixation in New Zealand pastures

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Published by Department of Scientific and Industrial Research Grasslands Division in Palmerston North .
Written in English


Edition Notes

Reprinted from New Zealand journal of experimental agriculture, 7:1 March,1979.

StatementGrasslands Division N. Z. Department of Scientific and Industrial Research ; Soil and Field Research Organisation N. Z. Ministry of Agriculture and Fisheries.
ContributionsNew Zealand. Department of Scientific and Industrial Research. Grasslands Division., New Zealand. Ministry of Agriculture and Fisheries. Soil and Field Research Organisation.
The Physical Object
Pagination51p. ;
Number of Pages51
ID Numbers
Open LibraryOL14317718M

The vast majority of published data on N 2 fixation measure the fraction of nitrogen derived from the atmosphere (%Ndfa) in shoots only. It is now acknowledged that this causes severe underestimation because of the significant contribution of belowground N (BGN) (Carlsson and Huss‐Danell , Crews and Peoples , Walley et al. Cited by: Few graziers rely entirely on legumes for the nitrogen needs of their pastures, but the amounts available from this ‘free’ source are significant and shouldn’t be discounted. At the other end of the spectrum, we’ve all heard of European and New Zealand graziers who apply up to pounds or more of actual N per acre per year. So, what is.

5 Sep - Explore pdbeart's board "Nitrogen Fixation" on Pinterest. See more ideas about Nitrogen fixation, Protein data bank and Wisteria plant. Gross nitrogen transformations as an index of nitrogen cycling. Adams, J. A. and Metherell, A. K. (ed.) Proceedings Australian and New Zealand Second Joint Soils Conference, Lincoln University, Canterbury, December Volume 3: Poster Papers. New Zealand Society of Soil Science. pp. Cited by: 9.

Additional Physical Format: Online version: During, C. (Cornelius), Fertilisers and soils in New Zealand farming. Wellington, Govt. Print., Nitrogen Fertilization in the Environment - CRC Press Book. This study examines the interactions between nitrogen and the ecosystem and discusses nitrogen fertilization practices around the world. Simulation models that play an important role in determining the dynamics of source-sink relationships are presented, helping to pinpoint.


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Nitrogen fixation in New Zealand pastures Download PDF EPUB FB2

Keywords: molybdenum, trace elements, nitrogen flxatlon, pastures, clover, topdressmg. INTRODUCTION It is now over 30 years since molybdenum (MO) deficiency was first identified in New Zealand pastures (Davies ). Whilst topdressing pastures with molybdic superphosphate has been an effective way of overcoming the low level of plant.

Ledgard SF, Sprosen MS, Penno JW, Rajendram GS () Nitrogen fixation by white clover in pastures grazed by dairy cows: temporal variation and effects of nitrogen fertilization. Plant and Soil. This is the reason why in most countries, grass-based pastures receiving fertilizer N are much more widespread than grass–legume pastures.

The only exception is New Zealand where well-managed grass–legume pastures often produce herbage yields of 10–15 t dry matter (DM) ha −1 year −1, similar to the yields produced by N fertilized all Author: P.K.

Ghosh, S.K. Mahanta, S.N. Ram. Regulation of N fertilizer inputs is contrary to the effects-based goals of the RMA and ignores the impact of the major N input from N 2 fixation in New Zealand's clover-grass pastures which can vary markedly between sites and years, e.g.

99 and kg N ha −1 year −1 in successive years in the 0 N farmlet (Ledgard et al., ). Nitrogen Cited by: A survey of 71 sites was conducted in the dairying districts of south-western Victoria in October to determine factors associated with nitrogen (N) fixation in white clover based pastures.

In New Zealand, pastoral farming for dairy and meat production is the major land use. As with any agricultural production system, weeds are a threat to efficient pasture production in New Zealand.

In this review, we outline the problems caused by weeds in New Zealand pastures, and the management strategies being used to control them. There are currently plant species from 40 plant families Cited by: 5. Biological nitrogen fixation (BNF) in mixed legume/grass pastures is reviewed along with the importance of transfer of fixed nitrogen (N) to associated grasses.

Estimates of BNF depend on the method of measurement and some of the advantages and limitations of the main methods are by: White clover not only provides high quality herbage but also fixes atmospheric nitrogen, thus contributing to the nitrogen economy of the pasture system. In order to effectively manage improved pastures the response of nitrogen fixation to climatic and management variables must be more fully : Carol Marriott, A.

Haystead, P. Newbould, Anne Rangeley. DairyNZ reports clover usually contributes less than 15 per cent of annual dry matter in New Zealand dairy pastures. White clover's significance lies in its ability to provide free nitrogen.

Quantitative field measurements of biological nitrogen fixation (BNF) and biomass production by 4 understorey pasture types in a Pinus radiata silvopastoral system near Lincoln, New Zealand, were determined over a period of one year (August to August ).

The trees were 2 yr old at the beginning of the study and the understorey pastures were being cut and removed for by: The amount of nitrogen (N) in clover dry matter (DM) herbage derived from N fixation in subterranean or white clover was estimated using the 15N enrichment technique in a dryland grazing experiment at Lincoln University.

Clovers were established in separate mixed swards with cocksfoot in February Nitrogen fixation measurements were made between November and December Cited by: This book looks at current knowledge on management of pastures and rangelands for sheep production, of problems, of practical solutions where possible, and of priority areas for research.

The areas considered extend from the high rainfall perennial pastures of south-east Australia and New Zealand, through the annual pasture, cropping zones to the semi-arid by: PRESENT AND FUTURE TRENDS IN GRASSLAND RESEARCH IN NEW ZEALAND L.

CORKILL Grasslands Division,DSIR, Palmerston North white clover is the basis of high-producing pastures in’ New Zealand, the breeding of a variety with improved and grazing intensity on nitrogen fixation, and on host/ rhizobium relations.

Delivering the production demanded by New Zealand’s world-leading farm systems requires a significant Resilient pastures A key point when considering new permanent pastures is ‘pasture resilience’.

By building pastures and systems via nitrogen fixation from companion legumes. Selecting. Nitrogen fertiliser reduces nitrogen fixation by clover by about 1kg N/ha/year for every 3kg nitrogen fertiliser applied. In addition, clover content will be further reduced if nitrogen-boosted. The natural supply of lime to New Zealand’s soils 35 Calcium availability in the soil 35 The organic matter content and the pH buffering capacity of soils 35 Seasonality in pasture growth responses to lime 36 Effect of the stocking rate 37 Factors influencing the speed of reaction of lime in the soil New Zealand soils are inherently deficient in several trace elements that are required for pasture growth and animal health.

Since the s, trace element deficiencies of cobalt (Co), copper (Cu) and selenium (Se) in animals, boron (B) for brassicas, clover seed crops and lucerne and molybdenum (Mo) in clover have been identified. At least 10 species of ___ have been introduced to New Zealand for recreational hunting.

Deer. Fitzgerald claims in her book that ___ live snakes were imported to the US in Nitrogen fixation refers to the conversion of N2 into ___. ammonia. Nitrogen fertilizers are made from ammonia (NH 3), which is sometimes injected into the ground ammonia is produced by the Haber-Bosch process.

In this energy-intensive process, natural gas (CH 4) usually supplies the hydrogen, and the nitrogen (N 2) is derived from the ammonia is used as a feedstock for all other nitrogen fertilizers, such as anhydrous ammonium nitrate.

"a valuable bookdeserves a place in the libraries of universities and research institutes. "Field Crops Research "an excellent book for a graduate student or researcher working in the area of nitrogen fertilizer use.

"Biofouling "a very helpful compendiumA book you. The annual N2 fixation rates in Australian dairy pastures are generally low, due to low pasture legume content. With typical legume contents of grazed pastures less than 30% of total pasture biomass production, annual N2 fixation in herbage is of the order of only 50 kg ha-1 or less.

More. Key words: National, nitrogen fixation, legumes. The young lucerne seedling relies partially on soil nitrogen until the Rhizobia become established and active. In paddocks where soil nitrogen levels are low (e.g.

poor or run-out pastures or continuously cropped paddocks) the addition of a small amount of nitrogen at planting (e.g.

kg/ha N) may improve early growth.New Zealand Journal of Agricultural Research Yeates, G. W. Effect of fertiliser treatment and stocking rate on pasture nematode populations on a yellow‑grey earth.

New Zealand Journal of Agricultural Research Yeates, G. W. Soil nematodes of New Zealand pastures. Soil Science [Invited review.