Effects of biochar on soil properties, heavy metal availability and uptake, and growth of summer squash grown in metal-contaminated soil

Ibrahim, Ehab A.; El-Sherbini, M.; Selim, E. M.

doi:10.1016/j.scienta.2022.111097

Cited by 61 publications

(33 citation statements)

References 66 publications

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“…The properties of soil such as pH, bulk density (BD), water-holding capacity (WHC), and cation-exchange capacity (CEC) could be relatively improved upon by biochar efficient addition [4,5]. The central factors behind the positive effect of biochar on soil properties thus crop productivity could be briefly arranged as follows: (i) increasing cationexchange capacity (CEC) of soil due to increased negative surface charged area by carboxyl groups; enhanced CEC soils absorb more nutrients and subsequently enhance nutrient availability for plants, in particular, that of N [6], (ii) enhancing crop tolerance to drought by elevating soil water holding capacity (WHC) [7], (iii) the potentiality to enhance microbial activity which could be beneficial to plant growth and development, and in addition, enhance plants' defenses against several diseases [8], and (iv) reducing the bioavailability of heavy metals, sodium ions, and organic pollutants in the soil by adsorbing them through biochar-extended charged surface areas [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Biochar Application to Fertile Soil on Tomato Crop Production under Saline Irrigation Regime

et al. 2022

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Biochar application is a promising sustainable strategy for enhancing soil properties thus crop production. However, biochar application to soil certainly alters its biological and physical properties, and could require extra costs. Therefore, biochar suitability to agroecosystems must be proactively estimated. The advantage of biochar addition to poor fertile or weathered soils has been well studies, however, its feasibility to fertile soil under low quality (saline) irrigation water was not frequently studied. Consequently, this work investigates the hypothesis of whether the application of biochar at a rate of 4.8 tons/ha to fertile soil (Nile Valley, Giza, Egypt) would ameliorate the negative effects of saline irrigation regime (3000 ppm) on tomato crop and soil. The results of two seasons experiments showed that saline irrigation significantly reduced tomato crop yield by an average reduction ratio of 51%, and biochar addition could not compensate such reduction. Furthermore, biochar did not reduce accumulated Na+ in fruits or roots. Tomato fruits produced from biochar-added soil were lower in TSS levels (41.7% reduction ratio) yet larger in diameter by approximately 1.5-fold increase. Interestingly, biochar addition into soil greatly promotes the length of stem-borne lateral roots and elevates the expression of LeNR (encodes nitrate reductase enzyme) in leaves yet under fresh irrigation regime. For soil properties, biochar application enhanced the soil properties under either saline or fresh water irrigation conditions. Collectively, it is assumed that biochar application to fertile soil in Nile Valley of Egypt could not alleviate tomato fruits yield reduction affected by applied saline irrigation regime.

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Section: Introductionmentioning

confidence: 99%

Effect of Biochar Application to Fertile Soil on Tomato Crop Production under Saline Irrigation Regime

et al. 2022

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“…This observation may call for future studies to explore the detailed dynamics of soil nitrate concentrations across the individual plots used in this study, as well as unravel the impacts of the bio-organic amendments on intracellular nitrate transport in squash plants. In addition to the reduction of nitrate accumulation in plants, bio-organic amendments such as biochar have also been demonstrated to reduce heavy metal accumulation in squash plants [3].…”

Section: Discussionmentioning

confidence: 99%

“…This experimental site has been described as having harsh weather due to the extremely high daytime temperature of above 25 • C and 40 • C in winter and summer, respectively [20]. The preliminary analysis of the experimental field soil has indicated that the soil has a pH of 7.2, EC of 5.06 dS/m, organic matter of 0.605%, bulk density of 1.51 g/cm 3 , particle density of 3 g/cm 3 and the texture is sandy loam.…”

Section: Planting Material Field Preparation Experimental Layout and ...mentioning

confidence: 99%

“…Squash (Cucurbita pepo L.) is a horticultural crop cultivated for its fruit and vegetable parts containing several nutritive components of high value in human's dietary needs [1,2]. Squash is a short-duration crop (2 to 3 months growing period) with a tendency to accumulate a high amount of nutrients (including nitrates and other elements which may be toxic at high concentrations) from the soil [2,3]. Squash can be grown in the open field or in controlled environments under different climate conditions [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…To improve squash yield, several studies have explored the use of inorganic, biological and organic sources of nutrients [3,8,9]. A study has demonstrated that the appropriate applications of organic and mineral sources of nutrients have a great potential in improving the productivity of squash cultivated in arid land conditions [10].…”

Section: Introductionmentioning

confidence: 99%

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Squash Yield, Water-Use Efficiency and Nitrate Accumulation as Influenced by the Application of Humic Acid, Geobacillus stearothermophilus SSK-2018 and Wheat Straw in an Arid Land Condition

2022

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The importance of inorganic fertilizers in squash crop productivity is enormous. However, the continuous use of inorganic fertilizers constitutes a serious problem to the environment and human health due to nitrate accumulation. Thus, two seasons (2020 and 2021) of field trials were carried out to investigate the effects of bio-organic amendments on squash under arid land conditions in Saudi Arabia. The bio-organic amendments were comprised of humic acid (HA) at three levels (0, 50 and 100 L/ha), inoculation of a cellulose-decomposing bacterium (CDB; Geobacillus stearothermophilus SSK-2018) and wheat straw at four levels (0, 20 and 30 t/ha and NPK 20:20:20 at 600 kg/ha as a positive control). A randomized split-split plot design replicated three times was used in laying out the field trials. The independent application of HA, CDB and wheat straw significantly (p ≤ 0.05) improved squash growth, yield and water-use efficiency in both seasons. Furthermore, HA significantly (p ≤ 0.05) reduced fruits’ nitrate content. HA (100 L/ha) reduced nitrate content in squash fruits by 87% and 71.6% compared to the control in 2020 and 2021, respectively. The application of 20 t/ha of wheat straw significantly (p ≤ 0.05) reduced nitrate accumulation in fruits compared to the positive control (NPK) by 5.9% and 13.6% in 2019/20 and 2020/21, respectively. Regression analysis shows that increased nitrate accumulation in fruits results in decreased squash growth and fruit yield. This study demonstrates the significance of bio-organic amendments in improving squash growth and yield while reducing nitrate accumulation in fruits.

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A Green and Energy‐Supply‒Free Artificial Plant for Efficient and Non‐Selective Enrichment of Heavy Metal Ions Out of Soil

Shi,

Li,

et al. 2024

Adv Funct Materials

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Removing heavy metal (loid) s (HMs) from contaminated soil in a nonselective, highly efficient, and energy‐free manner is a major global challenge. Herein, this work synthesizes and assembles a biomimetic materials system (BMS) consisting of an artificial plant, a hemispherical glass cover, and a reflective plate, capable of non‐selective and highly efficient remediation of soil contaminated by various HM ions under sunlight. Specifically, a water cycle is driven to establish between the soil, artificial plant, and atmosphere by solar energy in the BMS, which induced water‐soluble HM ions to enrich and precipitate at the top edge of the artificial plant. The formed HM precipitate is easily removed, contributing to the extremely strong recyclability of BMS. This system has significant advantages in terms of soil properties, contamination characteristics, energy consumption, processing time, and removal amount over other representative remediation methods, demonstrating its great potential for practical application in the remediation of various HM‐contaminated soils.

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Effects of biochar on soil properties, heavy metal availability and uptake, and growth of summer squash grown in metal-contaminated soil

Cited by 61 publications

References 66 publications

Effect of Biochar Application to Fertile Soil on Tomato Crop Production under Saline Irrigation Regime

Effect of Biochar Application to Fertile Soil on Tomato Crop Production under Saline Irrigation Regime

Squash Yield, Water-Use Efficiency and Nitrate Accumulation as Influenced by the Application of Humic Acid, Geobacillus stearothermophilus SSK-2018 and Wheat Straw in an Arid Land Condition

A Green and Energy‐Supply‒Free Artificial Plant for Efficient and Non‐Selective Enrichment of Heavy Metal Ions Out of Soil

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