Effects of biochar and zeolite soil amendments with foliar proline spray on nickel immobilization, nutritional quality and nickel concentrations in wheat

Shahbaz, Ali Khan; Ramzani, Pia Muhammad Adnan; Saeed, Rashid; Turan, Veysel; Iqbal, Muhammad; Lewińska, Karolina; Abbas, Farhat; Saqib, Muhammad; Tauqeer, Hafiz Muhammad; Fatima, Madiha; Rahman, Mahmood-ur

doi:10.1016/j.ecoenv.2019.02.025

Cited by 116 publications

(41 citation statements)

References 27 publications

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“…Some studies reported increased crop yield due to the application of digestate with C-rich organic (i.e. biochar) amendment [ 12 , 35 ]. Our results indicate this trend as well; however, no significant difference was observed.…”

Section: Discussionmentioning

confidence: 99%

Effect of carbon-enriched digestate on the microbial soil activity

et al. 2021

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Objectives As a liquid organic fertilizer used in agriculture, digestate is rich in many nutrients (i.e. nitrogen, phosphorus, sulfur, calcium, potassium); their utilization may be however less efficient in soils poor in organic carbon (due to low carbon:nitrogen ratio). In order to solve the disadvantages, digestate enrichment with carbon-rich amendments biochar or humic acids (Humac) was tested. Methods Soil variants amended with enriched digestate: digestate + biochar, digestate + Humac, and digestate + combined biochar and humic acids—were compared to control with untreated digestate in their effect on total soil carbon and nitrogen, microbial biomass carbon, soil respiration and soil enzymatic activities in a pot experiment. Yield of the test crop lettuce was also determined for all variants. Results Soil respiration was the most significantly increased property, positively affected by digestate + Humac. Both digestate + biochar and digestate + Humac significantly increased microbial biomass carbon. Significant negative effect of digestate + biochar (compared to the control digestate) on particular enzyme activities was alleviated by the addition of humic acids. No significant differences among the tested variants were found in the above-ground and root plant biomass. Conclusions The tested organic supplements improved the digestate effect on some determined soil properties. We deduced from the results (carbon:nitrogen ratio, microbial biomass and activity) that the assimilation of nutrients by plants increased; however, the most desired positive effect on the yield of crop biomass was not demonstrated. We assume that the digestate enrichment with organic amendments may be more beneficial in a long time-scaled trial.

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Section: Discussionmentioning

confidence: 99%

Effect of carbon-enriched digestate on the microbial soil activity

et al. 2021

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“…Nonetheless, seed priming with Pro or GB, especially 50mM Pro, improved all measured growth parameters under Cd stress. Similarly, the positive role of exogenously applied Pro and GB on the growth traits of various plants has been reported under Cd (Rasheed et al, 2014), Pb (Zouari et al, 2018) and Ni (Shahbaz et al, 2019) stress conditions. In the present study, when cowpea plants were exposed to Cd, the accumulation of Cd in the root was much higher than in the shoot.…”

Section: Discussionmentioning

confidence: 62%

Cadmium Toxicity Alleviates by Seed Priming with Proline or Glycine Betaine in Cowpea ( Vigna unguiculata (L.) Walp.)

Sadeghipour

2020

Egypt. J. Agron.

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C ADMIUM (Cd) as a non-essential metal is a soil pollutant that inhibits plant growth and development. Proline (Pro) and Glycine betaine (GB) are two important compatible solutes that accumulate in response to abiotic stresses in different plant species. Here, a pot experiment was carried out to assess the role of exogenously applied Pro and GB in improving Cd toxicity tolerance in cowpea plants. Seeds were soaked in 0, 25 and 50mM Pro or GB, and then were sown in plastic pots that were irrigated with 0 or 100µM cadmium chloride. Results showed that Cd stress markedly decreased shoot length, shoot biomass, leaf area, chlorophyll value, stomatal conductance and relative water content (RWC) but increased root and shoot Cd levels, malondialdehyde (MDA) content and antioxidant enzyme activities such as superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX). Nevertheless, seed treatment with Pro or GB reduced Cd toxicity and improved growth attributes via reducing Cd uptake and translocation, increasing the chlorophyll value, stomatal conductance, and RWC as well as more enhancing the activities of antioxidant enzymes and lowering the MDA level. Although both Pro and GB were effective, pre-treatment of seeds with Pro improved Cd stress tolerance better than GB. Thus, seed treatment with Pro (especially 50mM) could be used as an effective method for protecting cowpea plants against Cd toxicity.

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“…Similarly, ( Wu and McGoogan (2020) have suggested that an increase of 1 μgm −3 of PM 2.5 corresponds to a 15% increase in COVID-19 mortality. Certain developments in mechanisms associated with airway complications due to PM 2.5 and PM 10 thought to be an epigenetic variation of genes by incineration of particle pollutants and how multiplicity in genes participated in antioxidant routes and airway infection can transform responses to air pollution exposures ( Cui et al, 2003 ; Naeem et al, 2021 ; Shahbaz et al, 2019 ; Xie et al, 2018 ). Primary areas of concern for COVID-19 are associated with large scale transmissions, infection, reoccurrence, a substantial number of deaths, multidimensional effects in susceptible groups, and healthcare 'providers'.…”

Section: Introductionmentioning

confidence: 99%