Biochar amendment improves crop production in problem soils: A review

Yu, Haowei; Zou, Weixin; Chen, Jianjun; Chen, Hao; Yu, Zebin; Huang, Jun; Tang, Haoru; Wei, Xiangying; Gao, Bin

doi:10.1016/j.jenvman.2018.10.117

Cited by 450 publications

(234 citation statements)

References 190 publications

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“…Owing to the potential benefits of biochar, recent studies proved that biochar addition to low fertility soils is a promising technology to improve crop production [34]. Biochar could serve as a nutrient source to regulate uptake of plant root nutrient and indirectly change soil nutrient content [35], and plants growing in the soil with biochar addition will have a complex process in soil-plant systems [36]. Evidence shows that the first response to biochar particles and plants is roots, because biochar addition influences plant growth by directly changing soil properties and indirectly altering soil moisture and nutrient conditions [35,37].…”

Section: Introductionmentioning

confidence: 99%

Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily

Luo

Song

et al. 2020

Sustainability

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Biochar has been widely used to ameliorate soil quality and increase crop productivity through enhancement of nutrient availability and microbial community. The Karst yellow soil in China is characterized by severe soil degradation owing to intensive nutrient leaching. However, the biochar addition effects on the changes of Karst yellow soil are unclear, and the adequate number of biochar dosages to explain optimum of plant growth in this soil area remains poorly understood. In this study, pot experiments were conducted to examine the effects of biochar addition (1%, 3%, 5%, 7%, and 9% by weight; 0% as a control) on bacterial abundance and community structure via high-throughput sequencing coupled with bioinformatics methods applied to Karst yellow soil with planting ryegrass (Lolium perenne L.) and daylily (Hemerocallis fulva). After adding biochar for 188 days, significantly increased pH, soil organic matter, total nutrient contents, and bacterial abundance, but decreased available nitrogen, were observed. Changed bacterial community structures were found in biochar treatments compared with those without biochar. In both soils of planted ryegrass and daylily, the optimum soil bacterial abundance was found in 7% biochar dosage, but the lowest values were in the controls (0%). Taxonomic analysis identified that Micrococcaceae (24.53%), Oxalobacteraceae (11.87%), and Nocardioidaceae (7.89%) were the dominant family in the soil of ryegrass growth, and Micrococcaceae (16.20%), Xanthomonadaceae (6.94%), and Nocardioidaceae (6.41%) were the dominant family in soil of daylily growth. Canonical correspondence analysis showed that the alterations of soil bacterial abundance and community were highly interrelated with soil chemical properties. The results provided a better understanding of the mechanisms underlying the plant-soil microbe interactions and their responses to biochar dosages in low fertility soil regions.

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Section: Introductionmentioning

confidence: 99%

Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily

Luo

Song

et al. 2020

Sustainability

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“…One promising alternative to peat is biochar (BC) [5,13,14]. It is a charcoal-like solid with a high content in recalcitrant carbon created during pyrolysis of organic feedstock, such as crop residues, manure, and wood in an oxygen-limited environment at a temperature ranging from 300 to 900 • C [15]. BC is considered sustainable and environmentally friendly as it is carbon negative and derived from agricultural or forest residues [1,5,16].…”

Section: Introductionmentioning

confidence: 99%

Biochar or Biochar-Compost Amendment to a Peat-Based Substrate Improves Growth of Syngonium podophyllum

2019

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Increasing demand for sustainable and low-cost alternatives to peat is a challenge in the production of container-grown plants. Biochar (BC) and compost, as eco-friendly materials, could be used to completely or partially substitute for peat. However, information regarding plant responses to the substitution is limited. This study evaluated effects of the amendment of a BC or a BC-compost mixture (BioComp) to a peat-based substrate at 20% by volume on the growth of Syngonium podophyllum. BC was pyrolyzed from wheat straw at 350 °C. Compost was made from farm green waste. BC or BioComp amendment elevated the pH and electrical conductivity of formulated substrates and improved plant growth. Concentrations of nitrogen, phosphorus, potassium, and chlorophyll in leaves and the net photosynthetic rate of plants grown in BC or BioComp amended substrates were significantly higher than those grown in the control substrate. Total soluble protein and total phenolic contents were greater in plants grown in BC- or BioComp-amended substrates as well, but no significant difference occurred in reactive oxygen-related enzymatic activities, reducing power or proline contents across substrates. Our results show that BC or BioComp can be used to replace 20% of peat by volume, and such replacement enhanced S. podophyllum growth.

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“…Among soil additives, biochar has been recently suggested as an emerging organic conditioner that can aid in overcoming soil problems and enhancing soil productivity. It can also be used as a tool for carbon sequestration to mitigate climate [8–10].…”

Section: Introductionmentioning

confidence: 99%

“…Biochar is produced from organic materials (e.g., biomass) through pyrolytic processes under limited oxygen and is generally characterized by its high content of fixed carbon [11]. Biochar materials are largely employed as additives to overcome soil problems and limitations by enhancing soil properties in relation to chemical, biological, and hydro-physical parameters, as well as nutrient content and efficiency [8, 10, 12–14]. These improvements in soil properties are mainly the result of positive characteristics of biochar, making it an ideal candidate to improve soils for sustainable agriculture.…”

Section: Introductionmentioning

confidence: 99%

Potential short-term negative versus positive effects of olive mill-derived biochar on nutrient availability in a calcareous loamy sandy soil

Alazzaz

Usman

Ahmad

et al. 2020

Preprint

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36In this study, a greenhouse pot experiment with maize (Zea mays L.) was conducted using treatments 37 consisting of a control (CK), inorganic fertilizer of NPK (INF), and 1% and 3% (wt/wt) of olive mill solid 38 waste (OMSW)-derived biochar (BC) at various pyrolytic temperatures (300-700 °C). The goal was to 39 investigate potential negative versus positive effects of BC on pH, electrical conductivity (EC), and 40 nutrient (P, K, Na, Ca, Mg, Fe, Mn, Zn, and Cu) availability in a calcareous loamy sandy soil. The results 41 showed that application of OMSW-derived BC, especially with increasing pyrolysis temperature and/or 42 application rate, significantly increased soil pH, EC, NH 4 OAc-extractable K, Na, Ca, and Mg, and 43 ammonium bicarbonate-diethylenetriaminepentaacetic acid (AB-DTPA)-extractable Fe and Zn, while 44 AB-DTPA-extractable Mn decreased. The application of 1% and 3% BC, respectively, increased the 45 NH4OAc-extractable K by 2.5 and 5.2-fold for BC300, by 3.2 and 8.0-fold for BC500, and by 3.3 and 46 8.9-fold for BC700 compared with that of untreated soil. The results also showed significant increases in 47 shoot content of K, Na, and Zn, while there were significant decreases in shoot content of P, Ca, Mg, and 48 Mn. Furthermore, no significant effects were observed for growth of maize plants as a result of biochar 49 BC addition. In conclusion, OMSW-derived BC can potentially have positive effects on the enhancement 50 of soil K availability and its plant content but it reduced shoot nutrients, specifically P, Ca, Mg, and Mn; 51 therefore, application of OMSW-derived BC to calcareous soil might be restricted. 52

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Biochar amendment improves crop production in problem soils: A review

Cited by 450 publications

References 190 publications

Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily

Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily

Biochar or Biochar-Compost Amendment to a Peat-Based Substrate Improves Growth of Syngonium podophyllum

Potential short-term negative versus positive effects of olive mill-derived biochar on nutrient availability in a calcareous loamy sandy soil

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