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Study of nitrogen loss pathways in oil palm (Elaeis guineensis Jacq.) growing agro-ecosystems on volcanic ash soils in Papua New Guinea : 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, 2007)
Oil palm is the largest national crop produced in Papua New Guinea. It is grown on over 80,000 ha of young volcanic soils in five Provinces, employs over 12,000 workers and uses >12,000 tonnes of fertiliser to offset ...