EFFECTS OF NITROGEN FERTlLlSER ON PRODUCTION OF MILK SOLIDS FROM GRAZED PASTURE

A.M. Bryant; K.A. Macdonald; D.G. Clayton

doi:10.33584/jnzg.1982.43.1602

EFFECTS OF NITROGEN FERTlLlSER ON PRODUCTION OF MILK SOLIDS FROM GRAZED PASTURE

Authors

A.M. Bryant
K.A. Macdonald
D.G. Clayton

DOI:

https://doi.org/10.33584/jnzg.1982.43.1602

Abstract

In each of two years, eight 6.48 ha farmlets were used to assess effects of urea applications on dairy production. In the first year, 86 kg N/ha were applied in 2-3 dressings during May-August. Effects on annual milkfat and pasture production were not significant. In the second year 3-4 applications totalling 137 kg N/ha in April to September significantly increased annual milkfat and pasture production. Response in milkfat production per hectare to urea application averaged 0.22 (range - 0.16 to 0.45) and 0.25 (range - 0.1 I to 0.39) kgfat/ kgN in the first and second years respectively. These responses were not economic at present-day prices.

Downloads

Published

1982-01-01

Issue

Volume 43, 1982, New Plymouth

Section

Articles

Most read articles by the same author(s)

J.A. Lile, M.B. Blackwell, N.A. Thomson, J.W. Penno, K.A. Macdonald, P.K. Nicholas, J.A.S. Lancaster, M. Coulter, Practical use of the rising plate meter (RPM) on New Zealand dairy farms , Proceedings of the New Zealand Grassland Association: Volume 63, 2001, Hamilton
N.A. Thomson, M.P. Upsdell, R. Hooper, H.V. Henderson, M.B. Blackwell, D.A. Mccallum, R.J. Hainsworth, K.A. Macdonald, D.D. Wildermoth, G.J. Bishop-Hurley, J.W. Penno, Development and evaluation of a standardised means for estimating herbage mass of dairy pastures using the rising plate meter. , Proceedings of the New Zealand Grassland Association: Volume 63, 2001, Hamilton
K.A. Macdonald, J.W. Penno, P.K. Nicholas, J.A. Lile, M. Coulter, J.A.S. Lancaster, Farm systems - Impact of stocking rate on dairy farm efficiency , Proceedings of the New Zealand Grassland Association: Volume 63, 2001, Hamilton
R.N. Jensen, D.A. Clark, K.A. Macdonald, Resource Efficient Dairying trial: measurement criteria for farm systems over a range of resource use , Proceedings of the New Zealand Grassland Association: Volume 67, 2005, New Plymouth
S.J. Bluett, E.R. Thom, D.A. Clark, K.A. Macdonald, E.M.K. MinneÃ©, Milksolids production from cows grazing perennial ryegrass containing AR1 or wild endophyte , Proceedings of the New Zealand Grassland Association: Volume 65, 2003, Palmerston North
S.L. Woodward, C.G. Roach, K.A. Macdonald, J.C. Siemelink, Forage mixed ration dairy farming - the pros and cons , Proceedings of the New Zealand Grassland Association: Volume 70, 2008, Blenheim
S.L. Woodward, K.A. Macdonald, W.A. Carter, J.P.J. Eerens, J.R. Crush, Milksolids production from different combinations of perennial ryegrass and white clover cultivars: II Milksolids production and farm profitability , Proceedings of the New Zealand Grassland Association: Volume 63, 2001, Hamilton
E.S. Kolver, J.W. Penno, K.A. Macdonald, J.M. Mcgrath, W.A. Carter, Mowing pasture to improve milk production , Proceedings of the New Zealand Grassland Association: Volume 61, 1999, Hawkes Bay
S.L. Woodward, J.R. Crush, K.A. Macdonald, J. P.J. Eerens, Milksolids production and farm profitability from different combinations of perennial ryegrass and white clover cultivars: Progress report 2001-2003 , Proceedings of the New Zealand Grassland Association: Volume 65, 2003, Palmerston North
M.F. Hawke, M.B. O'Connor, J. Waller, K.A. Macdonald, B. Hobson, S. Coulter, Salt (NaCl) use in New Zealand pastoral agriculture - a summary of recent trial results , Proceedings of the New Zealand Grassland Association: Volume 64, 2002, West Coast

1 2 3 > >>