Soil P availability as affected by the chemical composition of plant materials: implications for P-limiting agriculture in tropical Africa

Kwabiah, A. B.; Stoskopf, N. C.; Palm, Cheryl; Voroney, R. P.

doi:10.1016/s0167-8809(03)00171-3

Cited by 45 publications

(26 citation statements)

References 28 publications

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“…However, summing P released at day 0 with cumulative P released showed a total ranging from 0.67 to 1.44 mg P kg − 1 which was always higher than total P released from unamended soils (0.41 to 0.83 mg P kg − 1 ). This has been reported for some tropical plant species litters that had high levels of P release immediately after being incorporated into soil, which was attributed to high watersoluble P content in the plant materials (Kwabiah et al, 2003).…”

Section: Nitrogen and P Mineralizationmentioning

confidence: 64%

Carbon, nitrogen and phosphorus mineralization potential of semiarid Sahelian soils amended with native shrub residues

Dossa¹,

Khouma²,

Diédhiou³

et al. 2009

Geoderma

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Section: Nitrogen and P Mineralizationmentioning

confidence: 64%

Carbon, nitrogen and phosphorus mineralization potential of semiarid Sahelian soils amended with native shrub residues

Dossa¹,

Khouma²,

Diédhiou³

et al. 2009

Geoderma

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“…Overall, PRE ranged from 0.11 to 0.29 kg kg -1 . The range of plant materials with critical total P concentrations of 2.4 g kg -1 with the propensity to cause net P release is narrow and a soil fertility strategy that involves replenishing soil P with plant materials alone seems to be bound to failure in many African cropping systems (Kwabiah et al 2003;Palm et al 2001). When all data from experiments that involved improved fallows and cover crops were pooled, only a weak relationship between N availability and N uptake could be established, while a general tendency for reduced NRE with increased N availability existed (Fig.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen and phosphorus capture and recovery efficiencies, and crop responses to a range of soil fertility management strategies in sub-Saharan Africa

Chikowo

Corbeels

Mapfumo

et al. 2009

Nutr Cycl Agroecosyst

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This paper examines a number of agronomic field experiments in different regions of subSaharan Africa to assess the associated variability in the efficiencies with which applied and available nutrients are taken up by crops under a wide range of management and environmental conditions. We consider N and P capture efficiencies (NCE and PCE, kg uptake kg -1 nutrient availability), and N and P recovery efficiencies (NRE and PRE, kg uptake kg -1 nutrient added). The analyzed cropping systems employed different soil fertility management practices that included (1) N and P mineral fertilizers (as sole or their combinations) (2) cattle manure composted then applied or applied directly to fields through animal corralling, and legume based systems separated into (3) improved fallows/cover cropscereal sequences, and (4) grain legume-cereal rotations. Crop responses to added nutrients varied widely, which is a logical consequence of the wide diversity in the balance of production resources across regions from arid through wet tropics, coupled with an equally large array of management practices and inter-season variability. The NCE ranged from 0.05 to 0. 123Nutr Cycl Agroecosyst DOI 10.1007/s10705-009-9303-6 quality manure immobilized soil N, while response to P was in many cases poor due to P fixation by soils. Other than good agronomy, it was apparent that flexible systems of fertilization that vary N input according to the current seasonal rainfall pattern offer opportunities for high resource capture and recovery efficiencies in semi-arid areas. We suggest the use of cropping systems modeling approaches to hasten the understanding of Africa's complex cropping systems.

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“…Moreover, several workers have demonstrated that tropical soils exhibit P deficiency, which sharply decreases yield of agricultural crops (Adepetu 1981;Ataga and Omoti 1987;Adediran and Sobulo 1998;Sinaj et al 2001;Kwabiah et al 2003;Huang, Kuo, and Bembenck 2004). Days to 50% flowering decreased in the P-fertilized crop compared to the control crop.…”

Section: Discussionmentioning

confidence: 99%

Comparative Effect of Phosphorus Sources for Grain Amaranth Production

Ojo

Akinrinde

Akoroda

2007

Comm. in Soil Sc. & Plant Analysis

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Phosphorus (P) is expensive to the sub-Saharan African resource-poor farmers; therefore, there is a need for investigation of locally available alternative P sources to enhance farmers' productivity. Optimum P rate was determined during the early and late rains of 1999. Using the optimum P rate, influences of three P sources ogun rock phosphate (ORP), sokoto rock phosphate (SRP), single super phosphate (SSP) and a control were evaluated on amaranth varieties in 2000 at the vegetable research plots of the National Horticultural Research Institute (NIHORT), Ibadan, Nigeria. In 1999, three grain amaranth varieties (NH84/452, NH84/445, and NH84/493) were combined factorially with four P rates: 0, 30, 60, and 90 kgP/ha. Application of P significantly increased plant height, number of branches, leaf dry weight, and grain yield (GY) per plant. Significant increase in GY was in the order NH/493 . NH/445 . NH/452. Optimum P rates across varieties for leaf dry-matter yield was established at 51.8 kgP/ha and for grain yield production was 48.4 kgP/ha. The experiment in the following year, 2000, was a RCB design using the optimum P determined in 1999. Three P sources (ORP, SRP, SSP) and a control were factorially combined with the three amaranth varieties. In the 2000 experiment, grain yield was 21.3, 16.9, 16.0, and 7.8 g/plant, respectively, for SSP, SRP, ORP, and the control. Growth was ranked in the order SSP . ORP . SRP . control. It was concluded for fertilizer recommendation Downloaded by [University of Western Ontario] at 07:52 04 February 2015 purposes that 50 kgP/ha is optimum for grain amaranth production and that amaranth productivity indices could be alternatively improved with indigenous P sources.

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Soil P availability as affected by the chemical composition of plant materials: implications for P-limiting agriculture in tropical Africa

Cited by 45 publications

References 28 publications

Carbon, nitrogen and phosphorus mineralization potential of semiarid Sahelian soils amended with native shrub residues

Carbon, nitrogen and phosphorus mineralization potential of semiarid Sahelian soils amended with native shrub residues

Nitrogen and phosphorus capture and recovery efficiencies, and crop responses to a range of soil fertility management strategies in sub-Saharan Africa

Comparative Effect of Phosphorus Sources for Grain Amaranth Production

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