Video: How to use fertiliser N successfully – Lee Menhennett, Incitec Pivot Ltd.

At what price is there a place for bagged N in pastures (beef/cattle)?

  • If additional nitrogen is being supplied as fertiliser – what application rates should be used, how many applications per year, when should these applications occur (timing, growing conditions) and which pastures should be targeted?
  • Is there any role for using soil testing to monitor N levels in pastures and, if so, how do we make it accurate?
  • What are the environmental implications of increasing nitrogen levels in a perennial pasture system and how to minimise them? N losses, denitrification, leaching.

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Video: Maximising legume N contribution in mixed pastures- Dr Belinda Hackney, NSW DPI

How much N do we get from clovers and when?

  • If relying on legumes in the pasture system to supply the required nitrogen, how can nitrogen fixation be maximised?
  • If using both N fertiliser and clover, what rules apply to maximise production & profit?

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Video: How to maximise the potential gains from N in perennial pasture systems? – Lisa Warn, Ag Consulting

How important is nitrogen in terms of improving pasture growth?

  • Pasture nitrogen requirements – how much is needed?
  • N cycle - when is N supplied & when is it deficient? How do clovers and organic nitrogen fit into the cycle?
  • What is the speed of the N cycle through mineralisation and what affects this rate?
  • What yield advantage can be gained by supplying more nitrogen to perennial pastures?

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