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An assessment of the nitrogen fertilizer requirements of winter cabbages (Brassica oleracea var. capitata L.): a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University
(Massey University, 1990)
The increasing costs of N fertilizers and the danger of creating environmental pollution due to excessive N fertilisation practices create a need for more efficient N fertilisation of vegetable crops. This present study ...