The profile distribution of total and extractable zinc in selected Nigerian soils

Udo, E. J.; Fagbami, Ayodele

doi:10.1080/00103627909366968

Cited by 12 publications

(4 citation statements)

References 24 publications

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“…Similar studies by Udo and Fagbami (1979) and Cottenie et al (1981) Zn gave the highest correlation with 1 M MgClr-extractable fraction (Table 3) x,x*Significant at the 5Va and I 7o levels of probability, respectively. …”

supporting

confidence: 69%

Micronutrient Status of Selected Cacao-Growing Soils in Southwestern Nigeria: Profile Distribution of Total and Available Zinc

Chude¹,

Obigbesan²,

Egbe³

1985

Can. J. Soil. Sci.

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supporting

confidence: 69%

Micronutrient Status of Selected Cacao-Growing Soils in Southwestern Nigeria: Profile Distribution of Total and Available Zinc

Chude¹,

Obigbesan²,

Egbe³

1985

Can. J. Soil. Sci.

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“…In the past, most studies of the elemental contents of soils in Nigeria had focused primarily on the micronutrient status of soils or on plant-available forms of micronutrients (Udo and Fagbami, 1979;Lombin, 1983aLombin, , 1983bKparmwang et al2000).However, the soil scientists particularly the environmental analytical chemists have appreciated the need for more information on the total soil trace metal concentrations determined with acid digestion procedures. Such soil total metal content, usually indicate the extent of contamination, by distinguishing soils containing elevated metal contents from soils which contain normal background levels.…”

Section: Introductionmentioning

confidence: 99%

Copper and Zinc Contents in Urban Agricultural Soils of Niger State, Nigeria

Iyaka¹,

Kakulu²

2009

Afr. Res. Rev.

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Study of the Cu and Zn contents in urban agricultural soils is paramount in order to assess concerning the possible potential risks they may pose at high concentrations to life and environment through the food chain. Levels of Cu and Zn in soil samples collected from cultivated farmlands in the vicinity of abandoned industrial sites at two cities of Minna and Bida in Niger State, were determined using flame atomic absorption spectrophotometry technique. The concentrations were in the following ranges; 12-89mgCukg-1 and 2.8-41mgZnkg-1 for Minna and 2.4-6.5mgCukg-1 and 0.57-36mgZnkg-1 for Bida. The accumulation of Cu in Minna cultivated farmlands was apparent, with a mean Cu content of 24 + 22ppm, which was almost five times that of the control soils, but other mean values were similar to the soil background average contents. Soil properties were also analysed, and obtained results for the cultivated farmland soils of the two cities were of the following ranges:-pH (5.0-7.5), Organic carbon (0.36-2.5)%, sand (46.4-94.2)%, silt (2.3-20.0)% and clay (1.8-33.6)%. Cu and Zn positively correlated among themselves, Cu correlated with clay content and Zn correlated with pH and organic carbon in all the soils.

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“…Contudo, não era esperada a correlação positiva entre teor de zinco e pH, pois, conforme SHUMAN (1991) o fato de a disponibilidade de zinco diminuir com o aumento de pH é bastante conhecida na literatura, sendo provável que ocorresse também aqui se fossem estudadas as variações destes dois componentes para a mesma amostra de solo. A associação das formas disponíveis de zinco (DTPA) com a matéria orgânica e pH do solo também foi reportada por UDO E FAGBAMI (1979). Entretanto, o mesmo não foi observado para o zinco extraído com HCl.…”

Section: Resultsunclassified

Zinco total e disponível em amostras de perfis de solos do estado de São Paulo

et al. 2009

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RESUMOEm amostras dos horizontes A e B de vinte e oito perfis de unidades de solos representativas do Estado de São Paulo fez-se a determinação de zinco usando os extratores DTPA pH 7,3 (ZnDTPA); Mehlich-1 (ZnM1); HCl 0,1 mol L -1 (ZnHCl); EDTA (ZnEDTA); e, NH 4 OAc 1 mol L -1 (ZnAc). O teor total de zinco nas amostras de solo estava alto, entretanto, notou-se somente uma pequena fração na forma disponível. O zinco total foi mais influenciado pelo teor de óxido de ferro (r=0,75). Para os teores considerados biodisponíveis, o pH foi o componente mais importante com coeficientes de correlação que variaram de 0,52 (ZnDTPA) a 0,66 (ZnAc). A análise dos componentes principais (PCA) revelou que os dois primeiros componentes principais explicaram 66% da variação, mostrando a associação entre os seguintes atributos dos solos: silte, pH, cálcio, magnésio, valor T, sílica, óxido de ferro, ZnT, ZnDTPA, ZnM1, ZnHCl e ZnEDTA, em que havia valores superiores a 0,63 no F1. No F2 ficou demonstrada a associação entre os teores de argila, areia fina e óxido de alumínio. Foi observada ambiguidade nos F1 e F2 para a areia grossa. Concluiu-se que: a maioria das amostras de solo apresenta potencial para o aparecimento de deficiência de zinco em curto e médio prazos e a PCA foi eficiente no agrupamento de solos originários de mesmo material de origem, indicando que as formas de Zn analisadas são influenciadas positivamente pelos teores de silte, Ca, Mg, sílica e Fe 2 O 3, pH e valor T.Palavras-chave: análise de solo, micronutriente, extratores químicos, análise multivariada, componente principal. ABSTRACT TOTAL AND AVAILABLE ZINC IN SOIL PROFILES FROM SÃO PAULO STATE, BRAZILTotal and available zinc were analized in samples of A and/or B horizons of twenty eight representative soil profiles of the State of São Paulo, Brazil. Amounts of Zn extracted by DTPA pH 7.3 (Zn DTPA), Mehlich-1 (Zn M1), HCl 0.1 mol.L -1 (Zn HCl), EDTA (Zn-EDTA), and NH 4 OAc(Zn Ac) were assessed. Amounts of total Zn (Zn T) in all samples was high, but just a small fraction of it is available. Total Zn correlated well with iron oxide content (r = 0.75). In terms of bioavailable amounts the pH was the most important component, showing correlation coefficients varying from 0.52 for Zn DTPA to 0.66 for Zn Ac. The two first axes of Principal Component Analysis (PCA) explained 66% of the variation, and showed association among the following soil attributes: silt, pH, calcium, magnesium, CEC-value, silica, iron oxides, T-ZN, DTPA-Zn, M1-Zn, HCL-Zn and EDTA-Zn, that presented correlation values higher values than 0.63 with the main axis (FL). The second axis (F2) showed an association among clay content, fine sand, and aluminum oxide. An ambiguity was clear in F1 and F2 to coarse sand. It is concluded that: most samples have potential to show up zinc deficiency in the short and medium term; PCA was efficient in grouping soils from the same parent material, indicating that the Zn analyzed in this study is positively influenced by the silt, Ca, Mg, silica, and iron oxide c...

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The profile distribution of total and extractable zinc in selected Nigerian soils

Cited by 12 publications

References 24 publications

Micronutrient Status of Selected Cacao-Growing Soils in Southwestern Nigeria: Profile Distribution of Total and Available Zinc

Micronutrient Status of Selected Cacao-Growing Soils in Southwestern Nigeria: Profile Distribution of Total and Available Zinc

Copper and Zinc Contents in Urban Agricultural Soils of Niger State, Nigeria

Zinco total e disponível em amostras de perfis de solos do estado de São Paulo

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