Nutrient Management for Maize Production in Soils of the Savannah Zone of South-Western Nigeria

Ayodele, O. J.; Omotoso, S. O.

doi:10.3923/ijss.2008.20.27

Cited by 22 publications

(16 citation statements)

References 2 publications

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Section: Resultssupporting

confidence: 75%

“…Organic matter is expected to be higher in petroleum contaminated environments as has been reported Ayodele and Omotoso [34]. In this study, the values obtained in the sludge sample was high, 7.83% respectively which was within the reported range observed in another report [34]. The 8.27% organic matter content observed in the soil samples could be attributed to the presence of other organic additives like pesticides, fertilizers, in particular would be dead or decaying plant material.…”

Section: Resultssupporting

confidence: 73%

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Characterization of Environmental Samples around an Indigenous Refinery in Nigeria

Uwem¹

2017

BMB

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Co-contamination by petrochemicals and heavy metals emanating from refinery operations was investigated from sludge, soil and water samples immediately around WRPC refinery, Delta State, Nigeria. Collection and assessment of environmental samples from 5 different points across the refinery and groundwater for which the pH, Electrical Conductivity, Temperature, Turbidity, TDS, TSS, Total hardness, Alkalinity, DO, BOD, Cl¯, PO 4 3¯ and bacteriological analysis were measured. The total petroleum hydrocarbon and polycyclic aromatic hydrocarbon concentrations were 755.291 and 22.746 mg L -1 in the water samples, 8756.148 and 311.569 mg kg -1 for the soil samples, 65346.8 and 4190.598 mg kg -1 for the sludge samples via GC-MS analysis. The effects of the release of the industrial effluents caused the increase in pH, 5.2-5.3 across the studied samples. Conductivity measurements for the sludge, soil and water samples gave readings of 0.27, 0.25 and 0.48 µs cm -1 respectively. The presence and distribution of different heavy metals varied whereby the presence of cadmium (0.139 mg/l), cobalt (0.34 mg/l) and nickel (0.606 mg/l) in the water samples were above the WHO permissible limits. The highest concentrations of iron (108.77 mg/kg) and zinc (11.072 mg/kg) where observed in the soil samples while chromium (24.25 mg/kg), lead (3.902 mg/kg), mercury (0.21 mg/kg), arsenic (0.417 mg/kg), copper (2.015 mg/kg) and manganese (82.695 mg/kg) where highest in the sludge samples. Total bacterial enumeration revealed a count of 7.29 x 10 3 (cfu/g), 1.84 x 10 3 (cfu/g) and 1.32 x 10 3 (cfu/ml) in the soil, sludge and water samples respectively. The presence and concentrations of these mixed pollutants via the activities of the refinery resulted in change of known physicochemical properties which in turn affects the vegetative and microbial flora within the area.

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Section: Resultssupporting

confidence: 75%

Section: Resultssupporting

confidence: 73%

Characterization of Environmental Samples around an Indigenous Refinery in Nigeria

Uwem¹

2017

BMB

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“…In this study, all the soils were slightly acid to neutral (pH 5.9 to 7.2) which is good for most arable crops (Ayodele and Omotosho, 2008).Based on the criteria for soil test interpretation and soil fertility classes established for Maize in South-Western Nigeria (Agboola and Ayodele, 1985;FMANR, 1990), the organic matter content was low in Alabata II, medium in Obantoko I, Alabata I and III but high in Obantoko II soil. The low organic matter content of Alabata II may be due to previous cropping on the soil without nutrient replenishment.…”

Section: Discussionmentioning

confidence: 72%

“…Today, commercial agriculture without the use of fertilizers is not yet achievable in Nigeria. Several studies had revealed the need for application of various nutrient elements such as nitrogen (N), phosphorus (P), potassium (K), sulphur (S), and some trace elements in order to boost crop productivity in Nigeria (Ayodele and Omotosho, 2008;Adekayode and Ogunkoya, 2010;Isitekhale et al, 2013).…”

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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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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“…In Nigeria, P deficiency is a serious threat to maize growth (59). One of the secondary objectives of this study was to evaluate indigenous soil bacteria for their potential in helping to reduce P deficiencies in Nigerian maize fields through inoculants capable of mineral P solubilization.…”

Section: Discussionmentioning

confidence: 99%

Phytobeneficial Properties of Bacteria Isolated from the Rhizosphere of Maize in Southwestern Nigerian Soils

Abiala

Odebode

Hsu

et al. 2015

Appl Environ Microbiol

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bBiocontrol agents isolated outside Africa have performed inconsistently under field conditions in Africa. The development of indigenous phytobeneficial microbial strains that suit local environments may help enhance competitiveness with in situ microorganisms and effectiveness at suppressing local pathogen strains. We isolated bacteria from the rhizosphere of maize growing in southwestern Nigeria and assessed them for growth-promoting characteristics. The best isolates were characterized using 16S rRNA genes and were further evaluated in the greenhouse on maize seedlings. Four isolates (EBS8, IGBR11, EPR2, and ADS14) were outstanding in in vitro assays of antagonistic activity against a local strain of Fusarium verticillioides, phosphate solubilization efficiency, chitinase enzyme activity, and indole-3-acetic acid production. Inoculation of maize seeds with these isolates resulted in >95% maize seed germination and significantly enhanced radicle and plumule length. In the greenhouse, maize seedling height, stem girth, number of leaves, leaf area, shoot mass (dry matter), and nutrient contents were significantly enhanced. The bioprotectant and phytobeneficial effects were strongest and most consistent for isolate EBS8, which was identified as a Bacillus strain by 16S rRNA gene analysis. As a bacterial strain that exhibits multiple growth-promoting characteristics and is adapted to local conditions, EBS8 should be considered for the development of indigenous biological fertilizer treatments. Maize was traditionally grown as a subsistence crop on small plots in home gardens in West and Central Africa, but it has recently expanded into a local "cash crop," especially in southwestern Nigeria, where Ͼ30% of cropland is devoted to maize production (1). However, maize productivity is often low in Nigeria due to a combination of agrobiological (2), climatic (3, 4), and technological (5) factors coupled with high postharvest losses (6). In addition to continued soil nutrient limitation (5), diseases such as downy mildew, rust, leaf blight, leaf spot, maize streak virus, and root, stalk, collar, and ear rots (7, 8) are among the major factors that limit maize production in southwestern Nigeria. Thus, national and international bodies have raised a global call to promote maize production through the management of biological communities associated with agroecosystems, which is an environmentally friendly and cost-effective strategy (4). In this regard, the use of plant growth-promoting rhizobacteria (PGPR) can play an important role in developing sustainable systems of crop production (9). PGPR can play a pivotal role in crop production by means of siderophore production, antagonism to soilborne root pathogens, phosphate solubilization, and dinitrogen fixation (10). PGPR are also known to alter root morphology and enhance the uptake of essential nutrients by plants (10).Despite the potential benefits of using rhizobacteria to enhance crop protection (11), they remain largely untapped in the effort to improve maize producti...

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Nutrient Management for Maize Production in Soils of the Savannah Zone of South-Western Nigeria

Cited by 22 publications

References 2 publications

Characterization of Environmental Samples around an Indigenous Refinery in Nigeria

Characterization of Environmental Samples around an Indigenous Refinery in Nigeria

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

Phytobeneficial Properties of Bacteria Isolated from the Rhizosphere of Maize in Southwestern Nigerian Soils

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