The potential of commercial composts in reducing heavy metals and metalloids phytoaccumulation in maize

Ahmed, Waqas; Zaman, Qamar; Mehmood, Faisal; Abbasi, Asim; Ashraf, Kamran; Fatima, Komal; Nazir, Saba; Komal, Nayab; Waqas, M.

doi:10.30848/pjb2023-2(25)

Cited by 4 publications

(3 citation statements)

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“…The quality of living beings and their environment are at constant risk of deterioration due to heavy metals and metalloid contamination, which is becoming a major ecological concern (Tóth et al, 2016;Zia et al, 2023). Elemental abundances such as metals and metalloids are ubiquitous components of the naturally occurring materials of the earth's crust, yet they cannot be degraded or removed due to their stable and persistent characters (Hussain et al, 2017;Njagi et al, 2017;Ahmed et al, 2022). Heavy metals and metalloids pollute soil and also affects living beings around the globe (Nagajyoti et al, 2010;Srivastava et al, 2017).…”

Section: Introduction Introduction Introduction Introductionmentioning

confidence: 99%

Accumulation of phytotoxic metals and metalloids in vegetable continuum subjected to different irrigation streams: a threat towards nutritional security

WAQAS,

ASHRAF,

MOHIUDDIN

et al. 2024

Not Bot Horti Agrobo

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The urban agro-ecosystem in developing countries plays a major role in uplifting the socioeconomic status of their inhabitants by confronting the challenges of improving food security and eradicating hunger. Food security and safety has become a serious global concern owing to accumulation of phytotoxic metals and metalloids in different food commodities subjected to different contaminated irrigation sources. The current study was undertaken to assess the concentrations of heavy metals and metalloid in ridge gourd (Luffa cylindrica L.), its planting soil medium and irrigation water sources used for crop production to determine the health risk. The results showed that the mean concentrations of different metals and metalloids in ground water samples i.e. Ni (0.14 mg L-1), Fe (1.29 mg L-1), Cu (0.10 mg L-1), Pb (0.55 mg L-1), As (0.10 mg L-1), Cr (2.38 mg L-1) and Cd (0.05 mg L-1) were over the permissible limits. Soil samples irrigated with ground water showed that concentrations of Cd (23.67 mg kg-1), Cr (26.66 mg kg-1) and As (45.97 mg kg-1) were above the permissible limits. Similarly, vegetable samples irrigated with ground water had a higher level of Cd (0.33 mg kg-1) than their prescribed safe limits. The bio-concentration factor ranged from 0.00 to 8.21 for all irrigation sources. The target hazard quotients (THQ) for Zn, Fe, and Cr were higher than the threshold value when ridge gourd was consumed, indicating a health concern. Similarly, hazard index values were 5.05, 28, 27, and 1.01, from groundwater, canal water, and sewage water, respectively. Target Cancer Risk (TCR) exposed Ni, Cr, Cd and As in canal water were sources of high cancer risk and Pb showed moderate cancer risk for the local community. These findings suggest that human intake of ridge gourd vegetable from the studied area may pose health hazards. Hence, frequent monitoring of different irrigation streams used in urban and semi-urban agriculture is strongly recommended to manage higher concentrations of phytotoxic metals and metalloids in crop produce and their associated health risks for humans.

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Section: Introduction Introduction Introduction Introductionmentioning

confidence: 99%

Accumulation of phytotoxic metals and metalloids in vegetable continuum subjected to different irrigation streams: a threat towards nutritional security

WAQAS,

ASHRAF,

MOHIUDDIN

et al. 2024

Not Bot Horti Agrobo

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“…Among different heavy metals [ 1 – 6 ], arsenic (As) can severely impact plant growth and development due to its toxicity [ 7 ]. When plants absorb As, it disrupts various physiological processes, leading to stunted growth, reduced biomass accumulation, and impaired nutrient uptake [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Unveiling the efficacy of Bacillus faecalis and composted biochar in alleviating arsenic toxicity in maize

Liao,

Ashraf,

Huang

et al. 2024

BMC Plant Biol

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Arsenic (As) contamination is a major environmental pollutant that adversely affects plant physiological processes and can hinder nutrients and water availability. Such conditions ultimately resulted in stunted growth, low yield, and poor plant health. Using rhizobacteria and composted biochar (ECB) can effectively overcome this problem. Rhizobacteria have the potential to enhance plant growth by promoting nutrient uptake, producing growth hormones, and suppressing diseases. Composted biochar can enhance plant growth by improving aeration, water retention, and nutrient cycling. Its porous structure supports beneficial microorganisms, increasing nutrient uptake and resilience to stressors, ultimately boosting yields while sequestering carbon. Therefore, the current study was conducted to investigate the combined effect of previously isolated Bacillus faecalis (B. faecalis) and ECB as amendments on maize cultivated under different As levels (0, 300, 600 mg As/kg soil). Four treatments (control, 0.5% composted biochar (0.5ECB), B. faecalis, and 0.5ECB + B. faecalis) were applied in four replications following a completely randomized design. Results showed that the 0.5ECB + B. faecalis treatment led to a significant rise in maize plant height (~ 99%), shoot length (~ 55%), root length (~ 82%), shoot fresh (~ 87%), and shoot dry weight (~ 96%), root fresh (~ 97%), and dry weight (~ 91%) over the control under 600As stress. There was a notable increase in maize chlorophyll a (~ 99%), chlorophyll b (~ 81%), total chlorophyll (~ 94%), and shoot N, P, and K concentration compared to control under As stress, also showing the potential of 0.5ECB + B. faecalis treatment. Consequently, the findings suggest that applying 0.5ECB + B. faecalis is a strategy for alleviating As stress in maize plants.

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“…The release of numerous toxic pollutants into the atmosphere has significantly accelerated since the onset of the Industrial Revolution 5 . A heterogeneous mixture of chemical compounds and heavy metals (HMs) in the environment presents a potential hazard to human health and the environment 6 , 7 . The concentration of lead (Pb) in the Earth’s crust is estimated to be approximately 0.002%.…”

Section: Introductionmentioning

confidence: 99%

Acidified biochar improves lead tolerance and enhances morphological and biochemical attributes of mint in saline soil

Shahzad

Younis

Naz

et al. 2023

Sci Rep

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Lead (Pb) toxicity is a significant environmental issue, especially in areas with a past of industrial activities and mining. The existence of Pb in the soil can have negative impacts on plant growth and development, and it can also pose a risk to human health through the food chain. Acidified carbon has shown promise as an effective management technology for mitigating Pb toxicity. This study provides important insights into the potential of acidified biochar as a low-cost and eco-friendly method for managing Pb-contaminated soils. The current study explores the effectiveness of acidified biochar (AB) in alleviating Pb stress in mint. The study involved two levels of Pb (0 = control and 200 mg/kg Pb) and four levels of AB as treatments (0, 0.45, 0.90, and 1.20%). Results indicate that 1.20% AB was the most effective treatment, significantly decreasing root and shoot Pb concentration while enhancing shoot and root fresh and dry weight, shoot and root length, and shoot and root N, P, and K concentration. Moreover, a significant decrease in MDA (0.45AB, 0.90AB, and 1.20AB caused a decline in MDA content by 14.3%, 27.8%, and 40.2%, respectively) and an increase in ascorbic acid (0.45AB, 0.90AB, and 1.20AB led to an increase in ascorbic acid content of 1.9%, 24.8%, and 28.4%, respectively) validated the effectiveness of 1.20% AB compared to the control. Adding 0.45AB, 0.90AB, and 1.20AB led to an increase in soluble sugar content of 15.6%, 27.5%, and 32.1%, respectively, compared to the treatment without AB. Further investigations at the field level are suggested to confirm the efficacy of 1.20% AB as the best treatment against Pb toxicity in saline soil conditions.

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The potential of commercial composts in reducing heavy metals and metalloids phytoaccumulation in maize

Cited by 4 publications

References 0 publications

Accumulation of phytotoxic metals and metalloids in vegetable continuum subjected to different irrigation streams: a threat towards nutritional security

Accumulation of phytotoxic metals and metalloids in vegetable continuum subjected to different irrigation streams: a threat towards nutritional security

Unveiling the efficacy of Bacillus faecalis and composted biochar in alleviating arsenic toxicity in maize

Acidified biochar improves lead tolerance and enhances morphological and biochemical attributes of mint in saline soil

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