Biochar compound fertilizer increases nitrogen productivity and economic benefits but decreases carbon emission of maize production

Han, Jing; Liu, Zhiwei; Xia, Wei; Zhang, Xuhui; Li, Lianqing; Liu, Xiaoyu; Bian, Rongjun; Cheng, Kun; Zheng, Jufeng; Pan, Genxing

doi:10.1016/j.agee.2017.02.034

Cited by 129 publications

(76 citation statements)

References 41 publications

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“…Therefore, the lower yield grain under extracted biochar amendment could be attributable to a decline in available phosphorus pool caused by extraction. In a field study with maize, soil available phosphorus was seen significantly increased under biochar blended fertilizer use 26 . Noting that soil available P pool could be enhanced in biochar amended soils 25 , the role of bicohar in soil fertility and crop productivity should be more explicitly explored though a lot of studies have emphasized on changes in soil organic carbon and N retention for crop productivity under biochar amendment 27 .…”

Section: Discussionmentioning

confidence: 97%

Extractable pool of biochar controls on crop productivity rather than greenhouse gas emission from a rice paddy under rice-wheat rotation

Korai

Xia

Liu

et al. 2018

Sci Rep

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The role of extractable pool of biochar in crop productivity and soil greenhouse gas (GHGs) emission is not yet clear. In this study, two biochars with and without extraction was added to a paddy before rice transplantation at 20 t·ha−1. Crop yield, plant traits and greenhouse gas emission monitored throughout a rice-wheat rotation. Between the biochar treatments, changes in bulk density and microbial biomass carbon were insignificant. However, the increase in organic carbon was similar between maize and wheat biochars while higher under bulk wheat biochar than extracted one. The increase in available P and K was higher under wheat than maize biochar regardless of extraction. Moreover, the increase in plant traits and grain yield, in rice season only, was higher under bulk than extracted biochars. Yet, there was no difference in changes in GHGs emission between bulk and extracted biochars regardless of feedstock. Nevertheless, increased methane emission for rice season was lower under extracted biochars than bulk ones. Overall, crop productivity rather than GHGs emission was affected by treatment of extraction of biochars. Thus, use of unextracted biochar is recommended for improving soil crop productivity in the paddy soils.

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Section: Discussionmentioning

confidence: 97%

Extractable pool of biochar controls on crop productivity rather than greenhouse gas emission from a rice paddy under rice-wheat rotation

Korai

Xia

Liu

et al. 2018

Sci Rep

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“…Biochar, a carbon (C)-rich solid produced from pyrolysis of biowastes in the absence of oxygen, is able to persist or remain deposited in soil for hundreds to thousands of years (Kuzyakov, Bogomolova, & Glaser, 2014;Lehmann et al, 2011). For this reason, biochar soil application has been widely accepted as an important strategy to increase soil organic carbon (SOC) sequestration (Sohi, 2012;Zheng, Han, et al, 2017). The impacts of biochar application on SOC dynamics have been reported in detail in the literatures (Ameloot et al, 2014;Jiang, Tan, Cheng, Haddix, & Cotrufo, 2019;Zheng et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

et al. 2019

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While biochar soil amendment has been widely proposed as a soil organic carbon (SOC) sequestration strategy to mitigate detrimental climate changes in global agriculture, the SOC sequestration was still not clearly understood for the different effects of fresh and aged biochar on SOC mineralization. In the present study of a two‐factorial experiment, topsoil samples from a rice paddy were laboratory‐incubated with and without fresh or aged biochar pyrolyzed of wheat residue and with and without crop residue‐derived dissolved organic matter (CRM) for monitoring soil organic matter decomposition under controlled conditions. The six treatments included soil with no biochar, with fresh biochar and with aged biochar treated with CRM, respectively. For fresh biochar treatment, the topsoil of a same rice paddy was amended with wheat biochar directly from a pyrolysis wheat straw, the soil with aged biochar was collected from the same soil 6 years following a single amendment of same biochar. Total CO2 emission from the soil was monitored over a 64 day time span of laboratory incubation, while microbial biomass carbon and phospholipid fatty acid (PLFA) were determined at the end of incubation period. Without CRM, total organic carbon mineralization was significantly decreased by 38.8% with aged biochar but increased by 28.9% with fresh biochar, compared to no biochar. With CRM, however, the significantly highest net carbon mineralization occurred in the soil without biochar compared to the biochar‐amended soil. Compared to aged biochar, fresh biochar addition significantly increased the total PLFA concentration by 20.3%–33.8% and altered the microbial community structure by increasing 17:1ω8c (Gram‐negative bacteria) and i17:0 (Gram‐positive bacteria) mole percentages and by decreasing the ratio of fungi/bacteria. Furthermore, biochar amendment significantly lowered the metabolic quotient of SOC decomposition, thereby becoming greater with aged biochar than with fresh biochar. The finding here suggests that biochar amendment could improve carbon utilization efficiency by soil microbial community and SOC sequestration potential in paddy soil can be enhanced by the presence of biochar in soil over the long run.

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“…Cotton requires a continuous supply of nutrients, especially N, but these nutrients are absorbed in different quantities at different rates during various developmental stages [11]. In our study, the contents of soil inorganic N with N0 treatments were lowest in all growth stages.…”

Section: Effects Of Bpcumentioning

confidence: 48%

“…This practice may also change soil N dynamics by altered transformation rates [7], thereby reducing N loss through runoff and leaching and increasing N availability to plants [8][9][10]. Many studies were conducted to examine the effect of biochar applications on soil fertility and crop yields [11,12]. The literature generally indicates that the effect of biochar application varied with the type of biochar applied, the experimental conditions such as the soil, crop, irrigation practices, and the length of biochar application.…”

Section: Introductionmentioning

confidence: 99%

Combined effects of straw-derived biochar and bio-based polymer-coated urea on nitrogen use efficiency and cotton yield

Tian

et al. 2018

Chemical Speciation & Bioavailability

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Biochar compound fertilizer increases nitrogen productivity and economic benefits but decreases carbon emission of maize production

Cited by 129 publications

References 41 publications

Extractable pool of biochar controls on crop productivity rather than greenhouse gas emission from a rice paddy under rice-wheat rotation

Extractable pool of biochar controls on crop productivity rather than greenhouse gas emission from a rice paddy under rice-wheat rotation

The responses of soil organic carbon mineralization and microbial communities to fresh and aged biochar soil amendments

Combined effects of straw-derived biochar and bio-based polymer-coated urea on nitrogen use efficiency and cotton yield

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