Biochar effects on crop yields and nitrogen loss depending on fertilization

Wei, Wenliang; Yang, Huaqing; Fan, Mingsheng; Chen, Haiqing; Guo, Daliang; Cao, Jing; Kuzyakov, Yakov

doi:10.1016/j.scitotenv.2019.134423

Cited by 49 publications

(25 citation statements)

References 68 publications

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“…The positive effect of biochar may be attributed to that, biochar increase soil content of elements such as carbon which, improve quality of soil, and led to increased relative water content and enhance plant height, number of leaves, leaf area/plant. This result of biochar application was similar to the obtained results of [59]. Furthermore, the increase of plant height, number of leaves, and leaf area/plant in the stressed plants treated with chitosan may be due to the significant role of chitosan as a protective factor against drought damage.…”

Section: Discussionsupporting

confidence: 88%

Beneficial Effects of Biochar and Chitosan on Antioxidative Capacity, Osmolytes Accumulation, and Anatomical Characters of Water-Stressed Barley Plants

et al. 2020

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The impact of biochar and chitosan on barley plants under drought stress conditions was investigated during two field experiments. Our results confirmed that drought stress negatively affected morphological and physiological growth traits of barley plants such as plant height, number of leaves, chlorophyll concentrations, and relative water content. However, electrolyte leakage (EL%), lipid peroxidation (MDA), soluble sugars, sucrose and starch contents significantly increased as a response to drought stress. Additionally, 1000 grain weight, grains yield ha−1 and biological yield significantly decreased in stressed barley plants, also anatomical traits such as upper epidermis, lower epidermis, lamina, and mesophyll tissue thickness as well as vascular bundle diameter of flag leaves significantly decreased compared with control. The use of biochar and chitosan led to significant increases in plant height, number of leaves, and chlorophyll concentrations as well as relative water content; nevertheless these treatments led to significant decreases in electrolyte leakage (EL%) and lipid peroxidation (MDA) in the stressed plants. Moreover, anatomical and yield characters of stressed barley plants were improved with application of biochar and chitosan. The results proved the significance of biochar and chitosan in alleviating the damaging impacts of drought on barley plants.

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Section: Discussionsupporting

confidence: 88%

Beneficial Effects of Biochar and Chitosan on Antioxidative Capacity, Osmolytes Accumulation, and Anatomical Characters of Water-Stressed Barley Plants

et al. 2020

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“…In addition, it was worth noting that N 1 ‐SB significantly enhanced wheat yield compared with N 1 ‐S 0 , while no significant disparity for maize yield between N 0.7 ‐SB and N 0.7 ‐S 0 was observed. This suggests that the first season of biochar addition did not affect maize yield, which is consistent with other findings in northern China (Niu et al, 2017; Wei et al, 2020). This may have occurred after the initial biochar addition, higher soil C:N ratio (Table 3) could slow down the straw decomposition rate and result in microbes competing for N with crop growth, consequently offsetting the positive effect of straw return on crop yield.…”

Section: Discussionsupporting

confidence: 91%

“…Third, the relatively higher DOC/DON with SB (Figure 5) could enhance microbial N immobilization, thus impairing the straw‐induced NH 3 ‐N volatilization. However, some contradictory results have been reported that biochar increased NH 3 volatilization (Dong et al, 2019; Wei et al, 2020). This inconsistency is primarily due to the differences in biochar characteristics, soil properties and experimental conditions.…”

Section: Discussionmentioning

confidence: 99%

Biochar addition mitigates nitrogen loss induced by straw incorporation and nitrogen fertilizer application

et al. 2020

Soil Use and Management

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Loss of nitrogen (N) from farmland ecosystems primarily occurs through ammonia (NH 3) volatilization, nitrous oxide emission (N 2 O), and leaching and runoff (Pinder et al., 2007; He et al., 2018). According to the calculation based on the multiple regression model by considering environmental and management-related factors, the total NH 3 volatilization, N 2 O emissions and N leaching from global agricultural soils (109 Tg•yr-1 of inorganic N and 24 Tg•yr-1 of organic N input) amount to approximately 15, 3 and 31 Tg•N•yr-1 , respectively, accounting for 74% of the global cropland total N loss (Liu et al., 2019a). This reduces utilization efficiency of N fertilizer and poses serious environmental risks, including global warming, ecosystem acidification, waterway eutrophication and biodiversity loss (Erisman et al., 2008; Luo et al., 2015; He et al., 2018). Therefore, effective strategies to mitigate N losses from crop production need to be developed.

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“…In addition, biochar and N addition may enhance the growth of aerobic microorganisms, thereby stimulating SOC decomposition (Chan & Xu, 2009;McCormack et al, 2019;Wardle et al, 2008). Surprisingly, our study showed that the responses of N 2 O emissions to the combined biochar and N addition displayed no significant correlation with N addition rate (Table 1), probably resulting from the biochar-induced facilitation of complete denitrification to N 2 (Anderson et al, 2011;Wei et al, 2020;Xu et al, 2014). Moreover, the combined biochar and N addition exerted a consistent and significant positive effect on soil N 2 O emission across experimental methods, with the lowest positive response of N 2 O emission observed in pot experiments (Figure S3).…”

Section: Influences Of Moderator Variablesmentioning

confidence: 73%

Antagonistic interaction between biochar and nitrogen addition on soil greenhouse gas fluxes: A global synthesis

Yao

Jia

et al. 2021

GCB Bioenergy

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Biochar effects on crop yields and nitrogen loss depending on fertilization

Cited by 49 publications

References 68 publications

Beneficial Effects of Biochar and Chitosan on Antioxidative Capacity, Osmolytes Accumulation, and Anatomical Characters of Water-Stressed Barley Plants

Beneficial Effects of Biochar and Chitosan on Antioxidative Capacity, Osmolytes Accumulation, and Anatomical Characters of Water-Stressed Barley Plants

Biochar addition mitigates nitrogen loss induced by straw incorporation and nitrogen fertilizer application

Antagonistic interaction between biochar and nitrogen addition on soil greenhouse gas fluxes: A global synthesis

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