The use of maize as an indicator crop and in the reclamation of farm land ladden with heavy metals as a result of crude oil pollution

Obilo, OP; Ogunyemi, S.

doi:10.4314/dai.v17i3.15738

Cited by 2 publications

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“…Reports on the responses of T. diversifolia at polluted sites can serve as indicators for soil recovery, which is a cheap, sustainable strategy for cleaning the environment [14]. Ayesa et al [15] and Al.-Jobori and Kadhim [16] identi ed T. diversifolia as a promising species for the phytoextraction of heavy metals from contaminated sites without being affected.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of biochar on the phytoremediation potential of Tithonia diversifolia on spent oil-contaminated soil

Ogunremi,

Amubieya,

Ogunkunle

et al. 2024

Preprint

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The application of biochar has gained attention as a simple, affordable and sustainable strategy for the remediation of contaminated soils. However, the phytoremediating potential of certain plants and interactions with biochar are necessary to achieve effective environmental clean-up. This study evaluated the influence of biochar on the remediation potential of Tithonia diversifolia grown in spent oil-contaminated soil. T. diversifolia was grown in spent oil-contaminated soil amended with rice biochar and sorghum biochar at four different application rates (1, 2 and 3% w/w) for 6 weeks. The heavy metals studied included copper (Cu), zinc (Zn), lead (Pb), cadmium (Cd) and chromium (Cr). The results of this study showed that compared with the other treatments, rice biochar strongly enhanced the growth of T. diversifolia. RB3% influenced the phytostabilization potential of T. diversifolia for Cu. However, StB3% and SB3% enhanced T. diversifolia’s potential capacity for the phytoextraction of Cr and Pb, respectively. Generally, the response of T. diversifolia to phytoextraction and phytostabilization is dependent on the biochar and application rate used. Hence, there is a need for further research on the use of T. diversifolia for remediation purposes under the influence of specific biochar types and application rates.

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Section: Introductionmentioning

confidence: 99%

Efficacy of biochar on the phytoremediation potential of Tithonia diversifolia on spent oil-contaminated soil

Ogunremi,

Amubieya,

Ogunkunle

et al. 2024

Preprint

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“…Because these sandy soils can be ameliorated to improve soil-waterplant relationships using organic and inorganic amendments, the potential efficacy of amendments can be tested rapidly using the plant bioassays in the greenhouse. Indicator crop bioassays have been successfully used to evaluate fertility or nutrient effects on crop growth (Ahlrichs et al, 1990;Obilo and Ogunyemi, 2005;Zebarth et al, 2005). For a bioassay to serve as a routine test, it should be simple and rapid to conduct.…”

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confidence: 99%

Indicator Crop Bioassays to Define Citrus Productivity in Sandy Soils

Mann¹,

Schumann²,

Obreza³

et al. 2010

horts

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Citrus production in Florida is commonly affected by a high degree of spatial variability of soils. Therefore, this study developed rapid indicator crop bioassays to evaluate the relationships between indicator crops and citrus production at various soil depths. A citrus grove was divided into five productivity zones based on existing tree canopy volume using GIS software (“very poor,” “poor,” “medium,” “good,” and “very good”). Visual ratings of percentage cover were collected from each zone using a 1-m2 quadrant. Six random soil samples were collected between the tree rows from each productivity zone at four depths (0 to 15, 15 to 30, 30 to 45, and 45 to 60 cm). Greenhouse bioassay experiments used sorghum and radish crops grown in soil sampled from four depths. Overhead photographs of potted radish plants were captured periodically with a SLR digital camera to calculate leaf area by image processing. Shoot weights, shoot length, root weights, and leaf nutrient concentrations were measured at harvest (56 and 21 days after germination for sorghum and radish, respectively). Germination, shoot length, and shoot weight of sorghum and radish were significantly affected by the productivity zone. Sorghum (0 to 30 cm), radish (0 to 45 and 0 to 60 cm) and weed cover were strongly correlated (r ≈0.50 to 0.60***) with citrus yield and canopy volume at the lower two depths. The strong relationships (r > 0.50***) of sorghum and radish shoot weights and weed cover with soil properties at greater depths demonstrated the important role of cumulative root zone depth of 60 cm in differentiating citrus productivity. These results revealed that citrus production in poor areas of the grove was limited by the shallow depth of productive soil, and citrus productivity could be successfully mapped using indicator crop bioassays with soil samples taken at multiple depths.

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The use of maize as an indicator crop and in the reclamation of farm land ladden with heavy metals as a result of crude oil pollution

Cited by 2 publications

References 0 publications

Efficacy of biochar on the phytoremediation potential of Tithonia diversifolia on spent oil-contaminated soil

Efficacy of biochar on the phytoremediation potential of Tithonia diversifolia on spent oil-contaminated soil

Indicator Crop Bioassays to Define Citrus Productivity in Sandy Soils

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