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Phosphorus Requirements Of Some Selected Soil Types In The Fiji Sugarcane Belt, M S. Goundar, R John Morrison, C Togamana
Phosphorus Requirements Of Some Selected Soil Types In The Fiji Sugarcane Belt, M S. Goundar, R John Morrison, C Togamana
Faculty of Science, Medicine and Health - Papers: part A
The availability of phosphorus (P) in soil is perceived to be one of the limiting factors to sustainable sugarcane production in Fiji. The main objective of this research was to ascertain the amount of bioavailable phosphorus in some Fiji sugarcane growing area soils; this will be valuable in improving the determination of the required amount of inorganic fertilizer to be applied to the soil. In this study, twelve different soils were selected from the sugarcane belt of Fiji and phosphorus buffer index (PBI) and phosphorus isotherm experiments were performed. Soil physical and chemical parameters were also measured and Pearson's correlation …
Phosphorus Speciation And Changes With Depth In The Sediment Of Lake Illawarra, New South Wales, Australia, Changyou Wang, R John Morrison
Phosphorus Speciation And Changes With Depth In The Sediment Of Lake Illawarra, New South Wales, Australia, Changyou Wang, R John Morrison
Faculty of Science, Medicine and Health - Papers: part A
In order to better understand phosphorus (P) cycling and origins in the sediment of the Lake Illawarra, two sediment cores were extracted in November, 2010 and a modified sequential extraction scheme (SEDEX) was used to profile the exchangeable P (Pex), reactive Fe/Al-bound P (Preac), reductive Fe/Al-bound P (Predu), authigenic apatite P (Pauth), detrital P (Pdet), organic P (Porg) and residual P (Presi). The total sedimentary P (TP) ranged from 93 to 437 μg g−1, and was dominated by inorganic P. The average percentage of each fraction of P in the sediment followed the sequence: Preac (28.6 %) > Presi (23.5 %) …