Forms and contents of iron and aluminum in inland flood plains of South-Eastern Nigeria

Ibia, T. O.

doi:10.4314/aga.v17i3.1670

Cited by 11 publications

(11 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Statistically, there was no significant difference (P < 0.05) in oxalate Al mean among the three wetland soil types studied. This result is in tandem with the low mean Alo values (0.02 -0.09%) of some floodplain soils of Southeastern Nigeria (Ibia, 2005). The mean values of Alo in the three wetland soils were greater than the mean Ald indicating the prevalence of amorphous Al in these soils than the crystalline Al which confirms that the soils are relatively less weathered and more reactive.…”

Section: Aluminium Oxidessupporting

confidence: 67%

Phosphate Sorption Capacity, Bonding Energy and Buffering Mechanisms of Wetland Soils in Akwa Ibom State, Nigeria

Akpan¹,

Nkanga²

2017

GJAS

View full text Add to dashboard Cite

Phosphate sorption capacity, bonding energy and buffering capacity of wetland soils in Akwa Ibom State, Nigeria were assessed for effective and sustainable soil management. Three wetland types (inland depression, river floodplain and coastal swamp) were selected for the study. In each wetland type, three locations were selected (9 locations) and in each location, soil samples were collected from 3 points at the depth of 0 -30cm and bulked to form composite samples using soil auger and taken to the laboratory for analysis. In the laboratory, a solution containing 0, 20, 40 and 80 ml prepared from 6.15g of KH2 PO4 (Potassium hydrogen phosphate) in 1500ml of distilled water and make up to two (2) litres with distilled water was used for the study. 2.5g of soil samples were weighed into a 50ml plastic cup and 2.5ml of each of the 4 sorption treatments solution were added to each of the soil in the cups and mixed thoroughly for effective mixing of P solution with the soil. The set ups were covered and incubated for 7 days. The treated soil samples were watered with deionized water once to keep the sample moist throughout the period of incubation. On the 7th day, P in each of the treated soil samples and the leachate were extracted using Bray-P-1 extractant. The P in the extract was determined using Murphy and Riley method. The P extracted from the soil samples were considered to be P adsorbed while P in the leachate samples were considered to be P in solution. Langmuir equation was used to estimate P adsorption capacity, bonding energy and P buffering capacity of the soils. The results showed that floodplain soils had the highest mean phosphate adsorption capacity (0.50 mgkg -1 ), followed by soils of inland depression (0.32 mgkg -1 ) while coastal swamp soils had the least (0.09 mgkg -1 ). The trend was as follow: floodplain soils > soils of inland depression > coastal swamp soils. Coastal swamp soils had the highest bonding energy (0.54 Lmg -1 ), followed by floodplain soils (0.27 Lmg -1 ) while soils of inland depression had the least (0.07 Lmg -1 ). The trend was as follow: coastal swamp soils > floodplain soils > soils of inland depression. Floodplain soils had the highest maximum buffering capacity (0.047), followed by coastal swamp soil (0.042) while soils of inland depression had the least (0.018). The trend was as follow: Floodplain soils > coastal swamp soils > soils of inland depression. Hence, the three wetland soil types were not the same in P sorption capacity, bonding energy and buffering capacity.

show abstract

Section: Aluminium Oxidessupporting

confidence: 67%

Phosphate Sorption Capacity, Bonding Energy and Buffering Mechanisms of Wetland Soils in Akwa Ibom State, Nigeria

Akpan¹,

Nkanga²

2017

GJAS

View full text Add to dashboard Cite

show abstract

“…Therefore, grain aluminum (Al) levels have largely been used to identify genotypes that are contaminated (Stangoulis and Sison, 2008). Al is even more abundant in soil than the Fe level (Ibia, 2002;Rauch and Pacyna, 2009) but is not found in clean plant tissue and is easily analyzed by ICP-OES, it can be used as an indicator of soil contamination. Typically, soil contamination of grain is considered to be acceptably low in grain analysis reports where Al is present at <5 mg kg −1 (Pfeiffer and McClafferty, 2007).…”

Section: Introductionmentioning

confidence: 99%

Possible effect of threshing method on grain iron and zinc density estimation in pearl millet: a contribution to biofortification breeding

Govindaraj¹

2017

Electron. Journ. of Plan. Breed.

View full text Add to dashboard Cite

In crop biofortification research, threshing part is the primary place of contamination while dealing with grain mineral traits such as iron (Fe) and zinc (Zn) density, thus type of threshing operation is one of the important and effective factors for efficient grain mineral traits determination. This study is aimed at the effects of threshing methods namely power-operated single-head thresher and manual-hand threshing on Fe and Zn density estimation. In this context, 50 pearl millet progenies each from two broad-based populations (AIMP 92901 and ICMR 312) were evaluated in field condition and tested for machine and hand threshing. Grain samples were analyzed for Fe and Zn density using Inductively Coupled Plasma Optical-Emission Spectrometry (ICP-OES) method. The analysis of variance showed the significant difference among population progenies for these micronutrients by recording two-fold variations for Fe (40-91 mg kg -1 ) and Zn (32-74 mg kg -1 ) density. Threshing method had significant effect, however, estimated Fe and Zn values from both the methods were highly comparable, further non-significant t-test and linear correlations-coefficients showed machine-threshed samples results were highly positively significantly correlated with hand-threshed samples values for both micronutrients (r=0.88 to 0.93; p<0.01 for Fe and r= 0.92 to 0.95; p<0.01 for Zn) in two populations. This study indicating the high levels of consistency on ranking of test entries and threshing method has no effect on grain Fe and Zn estimation. Therefore, singlehead thresher will be a reliable and faster method for large-number of breeding materials threshing and its grain micronutrient determination in pearl millet biofortification. Key wordsBiofortification; iron; pearl millet; threshing; zinc Pearl millet is an important climate-smart cereal and staple food in dry areas of Asia and Africa and grown on an area about >26 million ha, predominately in India (9 m ha). Dominant pearl millet cultivated areas in India are Rajasthan, Haryana, Maharashtra, Gujarat and Uttar Pradesh where majority of the populations relies upon pearl millet grain as a staple food and its fodder for animal husbandry (Yadav and Rai, 2013) and these states contributes a larger portion of total area (70%) and production (80%). Micronutrient malnutrition is primarily caused by inadequate intake of essential nutrients, particularly prevalent among resource poor families in the developing world, has emerged as a major health challenge where they mainly rely on cereal-based diet as staple food. India is home to a large number of undernourished people (18% of its population) in the world, where 42% of children (<3 years old) are underweight and 58% of them are stunted by two years of age (FAO/WFP/IFAD, 2012). Historically, pearl millet is well known for its total nutritional values but not all the released and commercialized cultivars (varieties and hybrids) has its unique nutritional levels as they were selectively bred for high yield potential with an average gr...

show abstract

“…Amongst landscapes, best bulk soil Fed was at the downslope while Feox and Feox/Fed were at the upslope positions. Generally, Fed was higher than Feox, giving low Feox/Fed ratio (0.04-0.17) and indicating high crystallinity and good drainage (Udo, 1980;Ibia, 2001). It has been noted that Feox/Fed ratio or iron activity is useful in evaluating the age, drainage conditions, degree of weathering and amounts of crystalline or free amorphous oxides in soils (Blume and Schwertmann, 1969;Alamdari et al, 2010).…”

Section: Sesquioxide Concentrations In the Soilsmentioning

confidence: 99%

“…Reactivity of sesquioxides is also associated with the ratio or relative amounts of the poorly ordered and the crystalline Fe and Al oxide fractions in soils (Hassan et al, 2005). Research has indicated that poorly drained soils have high ratios and thus more reactive than the well-drained soils (Ibia, 2001).…”

Section: Introductionmentioning

confidence: 99%

Impact of Texture on Sesquioxide Distribution in Southeastern Nigerian Soils

2019

View full text Add to dashboard Cite

Sesquioxides which play significant roles in soil classification and dominant soil properties vary in soils with particle size fractions. Using randomized complete block design, this study was conducted in the month of June 2018 to evaluate the impact of texture on sesquioxide distribution in humid rainforest soils of Southeastern Nigeria. Four mini-pedons were dug at four landscape positions (upslope, midslope, downslope and flat surface) and triplicate soil samples taken from 0-20, 20-40 and 40-60 cm depths, summing to total of 36 samples. Crystalline and amorphous Al, Fe, Mn and Si oxides were then determined at a depth of 0-20 cm using Dithionate Citrate Bicarbonate (DCB) and ammonium oxalate reagents. Dithionate and oxalate fractions in bulk soil ranged between 9300-11,400 (Fed), 390-1580 (Feox), 4600-6700 (Ald), 660-890 (Alox), 3300-5600 (Mnd), 350-580 (Mnox) and 9600-13,500 (Sid) and 1690-1790 mg kg-1 (Siox), with dithionate superior indicating high crystallinity and low mobility of the sesquioxides. Ratios of bulk soil oxalate/dithionate fractions were low and ranged between 0.04-0.17 (Feox/Fed), 0.11-0.15 (Alox/Ald), 0.10-0.16(Mnox/Mnd) and 0.13-0.18 (Siox/Sid) and confirming their crystallinity. Low Feox/Fed ratios signified that soils were well drained (< 0.35), old (< 0.65) and highly weathered (< 0.50) with the order being a decreasing sequence of upslope > flat surface > down slope > midslope. Sesquioxide contents and reactivity in soil particle size fractions (sand, silt and clay) varied with landscapes. Regression models indicated that particle size fractions accounted for 50% of 2/3rd of the bulk soil sesquioxide concentrations and that averaged over landscapes, sand fraction was more enriched with various sesquioxides than the other soil particle size fractions. Correlations between most bulk soil sesquioxide fractions and sesquioxide fractions with selected soil properties (sand, silt, clay, moisture content, total porosity, organic matter, pH, Ca and ECEC) were significant (P < 0.05).

show abstract

Forms and contents of iron and aluminum in inland flood plains of South-Eastern Nigeria

Cited by 11 publications

References 8 publications

Phosphate Sorption Capacity, Bonding Energy and Buffering Mechanisms of Wetland Soils in Akwa Ibom State, Nigeria

Phosphate Sorption Capacity, Bonding Energy and Buffering Mechanisms of Wetland Soils in Akwa Ibom State, Nigeria

Possible effect of threshing method on grain iron and zinc density estimation in pearl millet: a contribution to biofortification breeding

Impact of Texture on Sesquioxide Distribution in Southeastern Nigerian Soils

Contact Info

Product

Resources

About