Phosphorus Sorption Characteristics of Luvisols and Nitisols in North Ethiopian Soils

Getie, Ashebir; Kiflu, Alemayehu; Meteke, Gashaw

doi:10.1155/2021/8823852

Cited by 8 publications

(23 citation statements)

References 28 publications

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“…Based on OPSTAT, partitioning by path analysis showed significant direct effects by clay ( r = 0.587) and pH ( r = 0.538) on X m (Table 3). These values are closer to the results reported (Getie et al., 2021). Clay plays an important role in adsorption in soil because of its high specific surface area and reactivity.…”

Section: Resultssupporting

confidence: 91%

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Phosphorus sorption characteristics as influenced by major soil units in southern Ethiopia

Lambano¹,

Beyene

Abera

2022

J. Plant Nutr. Soil Sci.

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Background Limited soil nutrients in the soil are threat in crop production in Ethiopian soil. Low availability of phosphorus (P) is one amongst the most important crop yield‐limiting problems among the various reasons limiting P availability in tropical soils, P sorption is that the major one. Aim Therefore, this study was done to identify P sorption characteristics of andosols, vertisols, and nitisols in Tachegnawgimbicho, Taba, and DelboAtwaro study sites in southern Ethiopia. Methods Adsorption isotherms experiment was done using Langmuir and Freundlich models to spot the character of soils in their capability on P sorption and causation and to explain P sorption as influenced by the associated soil properties using SAS version 9.00. Results The P sorption maxima (Xm) of andosols, vertisols, and nitisols were found to be 965, 810, and 706 μg g−1, respectively. Correlation analysis indicated that soil pH was negatively and significantly correlated with Xm (R2 = −0.88). The Langmuir affinity constant “k” was positively and significantly correlated (R2 = 0.981) with maximum phosphorus buffering capacity (MPBC) indicating bonding energy constant is a component of buffering capacity of soils. The Langmuir equation correlated significantly with P sorption maximum “b” and binding energy “k” indicating both parameters can be used for evaluating P sorption characteristics of the soils. Conclusion In this finding, the path analysis coefficient revealed that clay and pH had direct effects on P sorption parameters. Sorption capacity is high in andosols followed by nitisols and vertisols. Andosols require more P fertilizer to maintain optimum P concentration in soil solution for crop growth as compared with nitisols and vertisols.

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Section: Resultssupporting

confidence: 91%

“…Organic matter can also inhibit crystallization of both Fe and Al oxides, thus indirectly affect the nature of P sorption by making chelates. The effect of OM is often attributed to complexation with Al or both Al and Fe (Getie et al., 2021). Organic matter can possibly obstruct or upgrade P sorption.…”

Section: Resultsmentioning

confidence: 99%

Phosphorus sorption characteristics as influenced by major soil units in southern Ethiopia

Lambano¹,

Beyene

Abera

2022

J. Plant Nutr. Soil Sci.

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“…Nitisols are well drained but exhibit much N leaching, thus requiring higher fertilization to attain higher crop yields (Muchena & Gachene, 1988; Warren & Kihanda, 2001). Both soils exhibit high P sorption, making P one of the most limiting nutrients (Elias, 2017; Getie et al., 2021; Gichangi et al., 2008; Gitari et al., 2020). The soil pH in the country is low, contributing further to P adsorption and to the unavailability of other key nutrients (Mugo et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Response of potato to fertilizers applied on different soil types in Kenyan Highlands

et al. 2021

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Declining soil fertility in Nitisols and Planosols, which dominate major potato (Solanum tuberosum L.) growing areas of Kenya, is a hindrance to sustainable production of the crop. A study was conducted in Nyandarua County, Kenya, to assess performance of potato and the agronomic efficiencies of three fertilizer types: diammonium phosphate (DAP) (N–P2O5–K2O: 18–46–0), Mavuno Peas, Beans and Root Vegetables (MRV) (15N:8 P2O5:15 K2O plus S, Ca, Mg, Fe, Cu, Zn, B, Mn, Mo), and new Mavuno blend (18N:24 P2O5:10 K2O plus 5S, 0.04B, 0.02 Zn). The experiments were established on Nitisol and Planosol soil types in farmers’ fields. Two potato varieties were evaluated in a split plot layout design. Diammonium phosphate had the highest and significant influence on potato haulm, giving 16.5 and 15.5 g plant–1 on variety Sherekea growing on Nitisol and Planosol, respectively. Fertilizer type significantly influenced potato yield, which was recorded at 29.2 t ha–1 with DAP and 26.6 t ha–1 with new Mavuno on variety Sherekea grown on Nitisol. A significant positive interaction (P < .05) of fertilizer type and soil type was observed. Fertilizers also gave significant effect on agronomic efficiency of N, P, and K. Potato yield and agronomic nutrient use efficiency were dependent on the fertilizer types used as well as soil type. Diammonium phosphate and new Mavuno were the best fertilizer types.

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“…The overall productivity and sustainability of agricultural sector are functions of fertile soils and therefore, the application of phosphorous (P) to the soil is essential for optimal crop yields. The limited availability of P is a major constraint in crop production particularly in highly weathered tropical soils such as the oxisols and ultisols (Moazed et al, 2010;Campos et al, 2016;Getie et al, 2021). This is attributed to low activity clays and inherent P content, high weathering incidence and soil reactions, and the situation could be aggravated by improper anthropogenic P management such as intensive cultivation without adequate supply of external P, among others (Moazed et al, 2010;Getie et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Physico-chemical properties that influence P sorption include soil texture, organic carbon, soil pH, porosity, clay content, Fe and Al contents, cation exchange capacity (CEC), exchangeable bases, hydraulic conductivity, among others (Moazed et al, 2011;Muindi et al, 2014;Sun et al, 2016). For instance, crop response to P application is often erratic in acidic soil due to formation of insoluble compounds with Al and Fe at low pH values particularly in Luvisols and Nitisols which are deep, well drained, and with high clay content (Getie et al, 2021). High affinity for P sorption in such highly weathered soils is attributed to the clay fraction that is dominated by 1:1 silicate mineral, and oxides, hydroxides and oxyhydroxides of Al, Fe, Mn (Campos et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Physico-Chemical Properties and P Sorption Characteristics of Soil With Different Land Use in Tigoni, Kiambu County, Central Kenya

Rop

Karuku²,

Nduhiu³

2022

Trop Subtrop Agroecosyst

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Background: Phosphorous is a limiting crop nutrient in highly weathered tropical soils due to fixation, and its availability for plants’ uptake is influenced by soil physico-chemical characterics, land use type and management practices. Objective: To evaluate the relationship between selected physico-chemical properties and phosphorous sorption characteristics of a humic nitisol (Alfisol) from Tigoni, Kiambu County, central Kenya. Methodology: The soil was sampled from the same area with different land uses that include tea plantation, maize field and natural forest at 0-25, 25-50 and 50-75 cm depths. P solution at the rates of 50, 100, 150, 200 mg P L−1 in a 24 h contact time were used in the study for maximum sorption. The data was analysed by simple regression and Pearson correlation analysis. Results: The adsorption data was fitted more to Langmuir model (R2 = 0.9100-0.9994) compared to Freundlich (R2 = 0.6815-0.9971). The values of P sorption maxima ( ) determined by Langmuir model ranged from 3,333-5,000 mg kg-1 and bonding energies ( ) ranged from 0.2308-1.5385 L mg-1. The buffering capacity of soil ranged from 769-5000 L kg-1 and the external P requirement at 0.2 mg kg-1 ( ranged from 147-1176 mg P kg-1 both increasing with soil depth. P sorption maxima were negatively and significantly correlated with organic carbon (r2 = -0.700*) and Ca2+ (r2 = -0.703*) contents. The pH of soil and clay content were negatively correlated with adsorption parameters ( ) while Al content was positively correlated though none of them was statistically significant. Implication: The data revealed a highly P-sorbing soil particularly tea plantation, a situation that can be alleviated by management practices such as liming and enhancing soil organic matter content. Field experiments are however, recommended to validate the findings of this study. Conclusion: Land use type influences P-sorption capacity of soil hence, fertilizer recommendations should be based on soil physico-chemical characteristics besides crop nutrient requirements.

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Phosphorus Sorption Characteristics of Luvisols and Nitisols in North Ethiopian Soils

Cited by 8 publications

References 28 publications

Phosphorus sorption characteristics as influenced by major soil units in southern Ethiopia

Phosphorus sorption characteristics as influenced by major soil units in southern Ethiopia

Response of potato to fertilizers applied on different soil types in Kenyan Highlands

Evaluation of Physico-Chemical Properties and P Sorption Characteristics of Soil With Different Land Use in Tigoni, Kiambu County, Central Kenya

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