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Mitigation potential of urease inhibitory compounds in reducing ammonia emissions from cattle urine in dairy-grazed pasture soils : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy (PhD) in Soil Science at Massey University, Palmerston North, New Zealand
(Massey University, 2019)
The excretal deposition by grazing animals, especially urine containing about 80% urea, and urea fertiliser use on pastoral farms are major sources of ammonia (NH3) emissions in New Zealand (NZ) agriculture. Recent ...
Targeted duration controlled grazing - the effects of timing of grazing on nitrate leaching and treading damage : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand
(Massey University, 2019)
Duration controlled (DC) grazing is successfully employed for two main reasons: to reduce N leaching and to protect pastures and soils from treading damage in wet conditions. These two objectives are currently very important ...