Phosphorus Fractions of a Chronosequence of Stabilized Contiguous Sand Dune in the Semi-arid Savanna of Nigeria

Raji, B. A.

doi:10.3923/ijss.2006.64.74

Cited by 3 publications

(1 citation statement)

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“…The usefulness of phosphorus fractions as an indicator of soil fertility and the degree of pedogenesis have long been established (Ridley, 1984;Loganathan & Sutton, 1987). Transformation and losses of P has been found to be influenced by the nature of the P in the parent material (Raji, 2006) and the relative abundance of the various fractions phosphorus fractions reflects the degree of soil weathering and development. Soil P is generally categorized into three types-solution P, labile P and non-labile P. the labile P fractions are more than the soluble Ps and they are not strongly adsorbed in the soil and may enter the soluble phase relatively quickly.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Phosphorus Fractions down the Soil Depth in the Savanna Zone of Nigeria

Ojo¹,

Aduramigba-Modupe²,

Adeoyolanu³

et al. 2017

JAS

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The distribution of phosphorus (P) fractions down the soil depth varies depending on the soil type as being affected by the surrounding soil management practices. A 10 km by 10 km site was chosen in the savanna zone of Nigeria for the study. Modal soil profile pits were dug to identify the different soil types while soil sampling was done at 0-20 cm, 20-40 cm, 40-80 cm and 80-120 cm depth. Resin P was the largest extractable P fraction while residual P was the least in the soil series characterized, down the soil depth. Fractionation results showed that there was variation down the soil depth. The conc. HCl-Pi was not observed at the 0-20 cm depth, NaHCO3-Pi and Po was small while NaOH-Pi and Po was observed at this depth. Initial decrease at the 20-40 cm depth was observed for most of the P fractions while more of the P fractions were observed at the 40-80 cm depth. The values observed at the 80-120 cm depth was however small compared to other soil depth. Resin P was the sink of P and would serve as a reserve of P in the soil series. However, organic and inorganic P extractable with NaOH i.e. NaOH Pi and Po which were high at the 0-20 cm depth would be mainly responsible for the availability of P in the soil solution for plant uptake.

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Section: Introductionmentioning

confidence: 99%