New Zealand made controlled release coated urea increases winter growth rates of Italian ryegrass with lower N leaching than uncoated urea

Authors

  • P.A. Bishop
  • H.Y. Liu
  • M.J. Hedley
  • P. Loganathan

DOI:

https://doi.org/10.33584/jnzg.2008.70.2729

Abstract

In a field trial the application of 5 and 7% polyurethane coated controlled release urea, 10% dicyanodiamide coated urea and three x 50 split urea (SU) applications at 150 kg N/ha (150 N) increased winter pasture dry matter (DM) production of Italian ryegrass over the June-September period by between 1666 to 2240 kg DM/ha. These treatments also reduced nitrate leaching losses from 6.8 to 1 kg N/ha compared to urea (U). Keywords: controlled release urea, nitrogen utilisation, pasture, ryegrass

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Published

2008-01-01

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Section

Articles

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