Phosphorus sorption capacity of low activity clay soils of South Western Nigeria and its usefulness in evaluating P requirement of rice

Adetunji, M. T.

doi:10.1007/bf01986273

Cited by 6 publications

(5 citation statements)

References 19 publications

(14 reference statements)

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“…We also observed that contrary to the single supply of S, the two single P rates resulted in significant higher dry matter yield in all the soils except Obantoko II, which already contained adequate nutrients and in Alabata II and III where 45 kg P ha -1 yielded high biomass only when S was applied. Increased maize grain yield to P application has been earlier reported from various studies in Nigeria (Adediran and Banjoko, 1995;Adetunji, 1997;Yusuf et al, 2003;Ayodele and Omotosho, 2008) and in other countries (Taalab et al, 2008;Wortmann et al, 2009). Similar observation on effect of P on maize grain yield has been reported for biomass yield.…”

Section: Discussionsupporting

confidence: 77%

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Effects of phosphorus and sulphur on dry matter yield of maize (<i>Zea mays</i>) in some soils at Abeokuta, Ogun State, Nigeria

Ogunsola¹,

Adetunji²

2017

Agro-Sci.

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Pre-planting analyses were performed to determine soil pH, particle size, organic matter, K, Na, P and S. Eight weeks after planting, maize parts above the soil level were harvested, oven-dried and dry-matter yield were computed and recorded. Application of S fertilizer appears not to be critical to maize production in the study areas since singly added S did not produce significant increase in biomass yield. In contrast, applied P significantly increased MDY in all the soils except Obantoko II, which already contained high amount of P sufficient for maize yield. Both synergism (Alabata II and III) and antagonistic (Alabata I) interactions were observed between P and S on MDY without any interactive effect in Obantoko I soil. Application rate of 30-45 kg P ha -1 with or without 10 or 20 kg S ha -1 resulted in significant effects on the MDY in the study areas. Field studies on effects of P and S on maize grain yield are recommended.

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Section: Discussionsupporting

confidence: 77%

“…Low soil P availability is well established in Nigeria (Adepetu, 1993). Application rate of 120 kg N ha -1 and 40 kg P ha -1 had significantly increased the growth and yield of maize in Southwestern Nigeria (Adetunji, 1997;Onasanya et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effects of phosphorus and sulphur on dry matter yield of maize (<i>Zea mays</i>) in some soils at Abeokuta, Ogun State, Nigeria

Ogunsola¹,

Adetunji²

2017

Agro-Sci.

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“…between 42 and 175 mg kg y Table 3 . The SPR of soils 2, 3 and 7 were Ž higher than reported for some soils in West Africa Adetunji, 1997;Mokwunye . et al, 1986 , but the second group of soils had SPR within the range for most West African soils.…”

Section: Phosphorus Adsorptionmentioning

confidence: 58%

Phosphate retention and extractability in soils of the humid zone in West Africa

Abekoe

Sahrawat

2001

Geoderma

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Phosphate adsorption and desorption studies provide insight for developing P management strategies. Very few studies have concentrated on P desorption which provides information on the reversibility of adsorbed P. Phosphate adsorption and desorption studies were carried out on seven rice-growing soils from three countries in West Africa, with the objective of relating these Ž. processes to P management strategies for the soils. The standard P requirement SPR of soils, defined as the amount of P to be added to attain an equilibrium solution concentration of 0.2 mg P l y1 , varied from 42 to 175 mg P kg y1. Out of the seven soils, four required low amounts and the other three needed relatively higher P applications. The extractability of the adsorbed P in different extractants was: 0.01 M KCl 32-78%, Olsen P 21-112%, and Bray 1 P 15-40%. Differences in the amounts of P desorbed by the soils suggested that the critical P levels needed for P management must be different. Management options to increase P availability in the soils are suggested.

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“…Volcanic soils have been extensively studied in the world, particularly with respect to phosphorus adsorption ( Van Ranst et al, 2004 ; Auxtero, Madeira & Sousa, 2008 ; Hashimoto et al, 2012 ; Valle et al, 2015 ), but there is a dearth of information on volcanic soils in Africa. A number of published papers address the phosphate sorption by African soils ( Sibanda & Young, 1986 ; Loganathan, Isirimah & Nwachuku, 1987 ; Frossard et al, 1992 ; Adepoju, 1993 ; Arduino et al, 1993 ; Adetunji, 1997 ; Henry & Smith, 2003 ; Nwoke et al, 2003 ; Gichangi, Mnkeni & Muchaonyerwa, 2008 ). A few papers deal with phosphate adsorption by African volcanic soils: Duffera & Robarge (1999) studied P sorption by four highland soils of Ethiopia, among which an Andosol developed from volcanic ash.…”

Section: Introductionmentioning

confidence: 99%

Phosphate sorption and desorption by two contrasting volcanic soils of equatorial Africa

González-Rodríguez

Fernández-Marcos

2018

PeerJ

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Volcanic soils cover 1% of the Earth’s surface but support 10% of the world’s population. They are among the most fertile soils in the world, due to their excellent physical properties and richness in available nutrients. The major limiting factor for plant growth in volcanic soils is phosphate fixation, which is mainly attributable to active species of aluminium and iron. The sorption and desorption of phosphate is studied on the surface horizons of two African agricultural soils, a silandic Andosol (Rwanda) and a vitric Andosol (São Tomé and Principe). Both soils are slightly acid. The silandic Andosol is rich in active aluminium forms, while the vitric Andosol has high amounts of crystalline iron and aluminium oxides. Sorption isotherms were determined by equilibrating at 293K soil samples with phosphate solutions of concentrations between 0 and 100 mg P L−1 in NaNO3; phosphate was determined by visible spectrophotometry in the equilibrium solution. To study desorption, the soil samples from the sorption experiment were equilibrated with 0.02 M NaNO3. The isotherms were adjusted to mathematical models. In almost all the concentration range, the adsorption of phosphate by the silandic Andosol was greater than 90% of the amount added, being lower in the vitric Andosol but always higher than 65%. The high sorption by the silandic Andosol is attributed to its richness in non-crystalline Fe and Al, while in the vitric Andosol crystalline iron species seem to play a relevant role in the adsorption. The sorption isotherms of both soils fitted to the Temkin model, the adjustment to the Langmuir or Freundlich models being unsatisfactory; throughout the range studied, the sorption increases with increasing phosphorus concentration, a maximum sorption is not predictable (as occurs when the sorption is adjusted to the Langmuir model). For an added P concentration of 100 mg L−1 (3.2 mmol L−1), the sorption is 47.7 µmol P g−1 in the silandic Andosol and 41.6 µmol P g−1 in the vitric Andosol. The desorption is low and the comparison of the sorption and desorption isotherms reveals a pronounced hysteresis, that is, the irreversibility of the sorption. The high phosphate sorption and its irreversibility are comparable to those published for other volcanic soils with high contents of allophane, active aluminium and free iron. The strong phosphate adsorption is a serious limiting factor for plant growth, which requires a careful management of phosphorus fertilization.

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Phosphorus sorption capacity of low activity clay soils of South Western Nigeria and its usefulness in evaluating P requirement of rice

Cited by 6 publications

References 19 publications

Effects of phosphorus and sulphur on dry matter yield of maize (<i>Zea mays</i>) in some soils at Abeokuta, Ogun State, Nigeria

Effects of phosphorus and sulphur on dry matter yield of maize (<i>Zea mays</i>) in some soils at Abeokuta, Ogun State, Nigeria

Phosphate retention and extractability in soils of the humid zone in West Africa

Phosphate sorption and desorption by two contrasting volcanic soils of equatorial Africa

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