Effects of fertiliser and intercropping on cadmium uptake by maize

Liu, Yu; Zhuang, Ping; Li, Zhaojun; Zou, Binglin; Wang, Gang; Li, Ningyu; Qiu, Jing

doi:10.1080/02757540.2013.810720

Cited by 17 publications

(5 citation statements)

References 35 publications

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“…When TF >1, it can be inferred that plants can transfer the heavy metal elements from roots to the aboveground part. When TF <1, plants prevent the transport of heavy metals from roots to the aboveground parts ( 59 ). As seen in Figure 6 , the TF of Pb in peanuts was high, in contrast, the TF of Cu and As was small, and hence the transfer ability was low.…”

Section: Resultsmentioning

confidence: 99%

Comprehensive Risk Assessment of Applying Biogas Slurry in Peanut Cultivation

et al. 2021

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Biogas slurry, a byproduct of biogas plants, is considered a high-quality bio-organic fertilizer. Despite providing nutrients to crops, biogas slurry may contain a high concentration of heavy metals, leading to food safety problems and endangering human health if such metals are absorbed by plants. Therefore, biogas slurry should undergo systematic risk assessment prior to direct use on farmland to ensure its safety for soils and crops. In this study, the risk of applying biogas slurry in peanut cultivation was comprehensively evaluated. Based on nitrogen contents, different concentrations of biogas slurry were applied in peanut cultivation. The results achieved herein showed that the application of biogas slurry as a nutrient supplier in peanut cultivation would significantly affect the physical and chemical properties of soil and characteristics of the plant and the quality of peanuts. Although the heavy metal content of biogas slurry was within the permitted range, it had potential risks to human health and the environment. Principal component analysis (PCA) showed that biogas slurry was the primary source of heavy metals in soil. After the application of biogas slurry, the contents of As and Hg in the soil increased significantly, which were 11.12 and 26.67 times higher than those in the control soil. The contents of Cu, Zn, Pb, Cd, and As in peanut kernel samples under different levels of biogas slurry application were all lower than the maximum permissible limit set by the Standardization Administration of China. In contrast, the content of Hg in peanut kernels was higher than the maximum permissible limit value of 0.02 mg/kg. Peanut had a higher enrichment capacity of Cd and Zn and a higher migration capacity of Pb. The health risk assessment showed that the long-term consumption of peanuts grown with a high dosage of biogas slurry would be harmful to the health of children aged 2–6 years with a large consumption level.

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Section: Resultsmentioning

confidence: 99%

Comprehensive Risk Assessment of Applying Biogas Slurry in Peanut Cultivation

et al. 2021

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“…The contaminations of Pb and Cd in the feeds could be due to the use of contaminated feed ingredients in the production of the feeds. Also, the presence of cadmium in the feeds cannot be excluded from the use of phosphate fertilizers in agricultural production of maize [34].…”

Section: Discussionmentioning

confidence: 99%

Heavy metal concentration in some commercial poultry feeds available in Abuja, Nigeria

Igwemmar¹,

Kakulu²,

Dauda³

2022

World J. Adv. Res. Rev.

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The concentrations of heavy metals in some commercial poultry feeds available in Abuja, Nigeria was investigated. Poultry feed rations (starter, grower, finisher and layer) of seven different feed brands available in Abuja were purchased from their various distribution outlets. The nitric acid digestion method followed by Flame Atomic Absorption Spectrophotometry technique were used for metal content quantification. Analytical method validation was performed using IAEA-V-8 Rye flour certified reference material and good recoveries were obtained in all the metals indicating the accuracy of the applied analytical procedure. The mean of heavy metal concentrations (μg/g dry weight) in the poultry feeds were 2.31 ± 1.23, 0.43 ± 0.20, 1.66 ± 0.82, 23.35 ± 5.26, 238.09 ± 45.80, 0.61 ± 0.26, 99.57 ± 15.63 and 68.21 ± 11.92 for Pb, Cd, Ni, Cu, Fe, Co, Mn and Zn respectively. Generally, the levels of iron, manganese, zinc and copper in the poultry feeds were higher than FAO/WHO, National Research Council (NRC) and Standard Organisation of Nigeria (SON) maximum recommended limits in feeds. Pearson correlation analysis on the metals in poultry feeds showed a significant (p < 0.01) positive strong correlations between Co/Ni (0.658), Mn/Cu (r = 0.566), Zn/Cu (r = 0.683) and Zn/Mn (r = 0.758) suggesting that these metals could have had the same pathway into the feeds.

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“…A new approach, intercropping/co-cropping system was introduced to phytoremediation of pollutants in contaminated soils, while also growing an agricultural crop. Li et al [49] studied the effects of intercropping 7 crops (Brown Bean, lentil, chickpea, alfalfa, rape, Amaranthus hypochondriacus L. and Mexico corn grass) on the Cd uptake by maize. The results showed that only lentil reduced the maize biomass, 4 leguminous crops increased Cd accumulation of maize, and Brown Bean and chickpea worked most efficiently, which increased Cd quantity of 1.6 times and 2.1 times in maize.…”

Section: Energy and Environment Materialsmentioning

confidence: 99%

Phytoremediation of Cadmium Contaminated Soils: Advances and Researching Prospects

Cai

Zhou

2013

MSF

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More and more attention has been paid to soil contamination by heavy metals in recent years. Heavy metal contamination includes heavy metal - heavy metal contamination, heavy metal - organic contamination, and heavy metal nutrient contamination. In particular, soil contamination by cadmium (Cd) is the most typical one. In terms of the current remediation technologies, phytoremediation of Cd contaminated soil remains popular due to its low cost, environmental aesthetics and in-situ effective treatment. Therefore, screening-out and identification of Cd hyperaccumulators becomes a hotspot in this researching domain. In order to further improve the efficiency of phytoremediation, we have developed a variety of joint remediation technologies. Based on these work at home and abroad, we summed up the studying progress in this field. Some main researching contents and directions of phytoremediation for Cd contaminated soils were also proposed.

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Effects of fertiliser and intercropping on cadmium uptake by maize

Cited by 17 publications

References 35 publications

Comprehensive Risk Assessment of Applying Biogas Slurry in Peanut Cultivation

Comprehensive Risk Assessment of Applying Biogas Slurry in Peanut Cultivation

Heavy metal concentration in some commercial poultry feeds available in Abuja, Nigeria

Phytoremediation of Cadmium Contaminated Soils: Advances and Researching Prospects

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