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Phosphate rock fertilisers to enhance soil P status and P nutrition on organic cropping farms : a thesis presented in partial fulfilment of the requirements for the degree of Master of Plant Science at Massey University
(Massey University, 2009)
The soils used by the East Coast Organic Producers Trust (ECOPT; the grower group that this study is targeted towards) have exceptionally low soil Olsen P concentrations (ca. 6 mg/L). These and other limitations (e.g. poor ...