Biochar Effectively Reduces Ammonia Volatilization From Nitrogen-Applied Soils in Tea and Bamboo Plantations

Chu, Lei; Hennayake, H. M. K. D.; Sun, Haijun

doi:10.32604/phyton.2019.07791

Cited by 7 publications

(6 citation statements)

References 28 publications

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“…Besides, the soil pH of the acidified eucalyptus plantation increased by 0.17-1.29 units after applying eucalyptus branch biochar (anaerobic pyrolysis under 500°C) [44]. The pH values of the Phyllostachys praecox stand, the rubber plantation and the nitrogen-applied bamboo forest soils also significantly (P < 0.05) increased after biochar addition [45][46][47]. These data suggest that biochar can immediately increase the pH value of different types of acidified forest soils.…”

Section: Alleviating the Acidification And Aluminum Toxicity Of Fores...mentioning

confidence: 99%

Positive Effects of Biochar on the Degraded Forest Soil and Tree Growth in China: A Systematic Review

Zhang¹,

Zhang²,

Niu³

et al. 2022

Phyton

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Soil degradation threatens the forest sustainable productivity, particularly in afforestation system. Biochar derived from agroforestry waste or biomass can potentially improve the degraded forest soil and promote the tree growth. To expand the application of biochar for forestry productivity improvement, we here reviewed the effects and the underlying mechanisms of biochar on the degraded forest soil and tree growth. Totally 96 studies that conducted from pot to field investigations in China were summarized. The result suggested that biochar generally exerted positive effects on restoration of degraded forest soil such as that with compaction, acidification or soil erosion, which are mainly manifested by improving soil porosity, increasing pH, enhancing erosion resistance and mitigating greenhouse gas emissions. Furthermore, biochar incorporation promoted the growth of tested trees in most cases, which effect was mainly attributing to directly supplying nutrients, improving soil physio-chemical properties, enhancing the root's nutrient absorption capacity, and enlarging the living space. In summary, current studies demonstrate that biochar has a unique potential for improving degraded forest soils and promoting tree growth. However, investigations on the underlying mechanisms and the long-term effects should be strengthened.

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Section: Alleviating the Acidification And Aluminum Toxicity Of Fores...mentioning

confidence: 99%

Positive Effects of Biochar on the Degraded Forest Soil and Tree Growth in China: A Systematic Review

Zhang¹,

Zhang²,

Niu³

et al. 2022

Phyton

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“…Emission of NH 3 from stores with a cover of PVC roof are set to 2.6% of TAN i.e., similar to emissions from covered stored liquid manure (Hansen et al, 2008) and of sludge injected into black soil to 2% of TAN (Olesen et al, 2020). The negative charge of biochar will contribute to a negligible NH 3 emission from soils to which hydro-biochar is applied (Chu et al, 2019), biochar from pyrolysis do not contain TAN and the NH + 4 in struvite is assumed not to volatilize due to the low pH (Sommer et al, 2004). At deposition on land or water, a fraction of NH 3 will be transformed to N 2 O and be emitted to the atmosphere.…”

Section: Emission Of Nh 3 and N 2 Omentioning

confidence: 99%

Systematic Review of Dairy Processing Sludge and Secondary STRUBIAS Products Used in Agriculture

Khomenko

Shi

et al. 2021

Front. Sustain. Food Syst.

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Worldwide dairy processing plants produce high volumes of dairy processing sludge (DPS), which can be converted into secondary derivatives such as struvite, biochar and ash (collectively termed STRUBIAS). All of these products have high fertilizer equivalent values (FEV), but future certification as phosphorus (P)-fertilizers in the European Union will mean they need to adhere to new technical regulations for fertilizing materials i.e., content limits pertaining to heavy metals (Cd, Cu, Hg, Ni, Pb, and Zn), synthetic organic compounds and pathogens. This systematic review presents the current state of knowledge about these bio-based fertilizers and identifies knowledge gaps. In addition, a review and calculation of greenhouse gas emissions from a range of concept dairy sludge management and production systems for STRUBIAS products [i.e., biochar from pyrolysis and hydrochar from hydrothermal carbonization (HTC)] is presented. Results from the initial review showed that DPS composition depends on product type and treatment processes at a given processing plant, which leads to varied nutrient, heavy metal and carbon contents. These products are all typically high in nutrients and carbon, but low in heavy metals. Further work needs to concentrate on examining their pathogenic microorganism and emerging contaminant contents, in addition to conducting an economic assessment of production and end-user costs related to chemical fertilizer equivalents. With respect to STRUBIAS products, contaminants not present in the raw DPS may need further treatment before being land applied in agriculture e.g., heated producing ashes, hydrochar, or biochar. An examination of these products from an environmental perspective shows that their water quality footprint could be minimized using application rates based on P incorporation of these products into nutrient management planning and application by incorporation into the soil. Results from the concept system showed that elimination of methane emissions was possible, along with a reduction in nitrous oxide. Less carbon (C) is transferred to agricultural fields where DPS is processed into biochar and hydrochar, but due to high recalcitrance, the C in this form is retained much longer in the soil, and therefore STRUBIAS products represent a more stable and long-term option to increase soil C stocks and sequestration.

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“…Biochar, a solid material obtained from the thermochemical conversion of biomass in an oxygen-limited environment, has attained extensive attention due to its agronomical and environmental benefits in agroecosystems [8][9][10][11]. Regarding to the effects of biochar on N cycling in vegetable production system, many literatures reported its influences on NH 3 volatilization and N 2 O emission from both stable crop and vegetable production systems [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Biochar can Increase Chinese Cabbage (Brassica oleracea L.) Yield, Decrease Nitrogen and Phosphorus Leaching Losses in Intensive Vegetable Soil

Sun¹,

Jeyakumar²,

Xiao³

et al. 2022

Phyton

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There are few evidences on the effect of biochar on vegetable yield, nitrogen (N) and phosphorus (P) leaching losses under intensive vegetable production soil. The current field plot scale study evaluated responses of Chinese cabbage (Brassica oleracea L.) yield, N and P leaching losses using five N treatments of common N application rate according to local farmers' practice (N100%), reducing 20% or 40% N fertilizer (N80% and N60%), and reducing 40% N fertilizer but incorporating 10 or 20 t/ha biochar (N60% + BC10 and N60% + BC20). Results showed that N80% and N60% decreased both the cabbage economic and leaf yields by 6.8%-36.3% and 27.4%-37.7%, respectively. Incorporation of biochar with reduced N fertilizer rates improved the cabbage yield, in particular the N60% + BC20 matched the yield that observed in N100% treatment. Enhanced N and P uptake capacities of cabbage shoot probably contributed the higher vegetable production under both biochar amendment schemes. Biochar application mitigated the NH 4 + -N and total P leaching losses by 20%-30% and 29%-32%, respectively, compared with their counterpart treatment N60%. Nevertheless, biochar exerted no influence on the NO 3 --N leaching. In addition, soil organic matter content was recorded with 7.4%-28.7% higher following 10-20 t/ha biochar application. In conclusion, biochar application can increase economic yield of cabbage via increasing N and P use efficiency, decrease N and P leaching losses, and improve soil quality in an intensive vegetable production system.

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Biochar Effectively Reduces Ammonia Volatilization From Nitrogen-Applied Soils in Tea and Bamboo Plantations

Cited by 7 publications

References 28 publications

Positive Effects of Biochar on the Degraded Forest Soil and Tree Growth in China: A Systematic Review

Positive Effects of Biochar on the Degraded Forest Soil and Tree Growth in China: A Systematic Review

Systematic Review of Dairy Processing Sludge and Secondary STRUBIAS Products Used in Agriculture

Biochar can Increase Chinese Cabbage (Brassica oleracea L.) Yield, Decrease Nitrogen and Phosphorus Leaching Losses in Intensive Vegetable Soil

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