Biochar addition affects root morphology and nitrogen uptake capacity in common reed (Phragmites australis)

Li, Qianwei; Jinfeng, Liang; Zhang, Xiaoya; Feng, Jiu-Ge; Song, Minghua; Gao, Jun-Qin

doi:10.1016/j.scitotenv.2020.144381

Cited by 24 publications

(10 citation statements)

References 43 publications

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“…Referring to previous studies, it was hypothesized that biochar can improve the root growth of S. sebiferum container seedlings by improving soil physical property, providing more nutrients, and activating microbes or enzymes [26]. Li et al [27] reported that a 1.5% biochar addition can change root morphology and improve N absorption capacity of Phragmites australis. Compared to the study by Li et al [27], we selected two types of biochar at three separate concentration levels.…”

Section: Introductionmentioning

confidence: 98%

“…Li et al [27] reported that a 1.5% biochar addition can change root morphology and improve N absorption capacity of Phragmites australis. Compared to the study by Li et al [27], we selected two types of biochar at three separate concentration levels. Our experiment not only aimed to prove the hypothesis above, but also to assess the superior type of biochar and proper concentration for enhancing root growth of S. sebiferum.…”

Section: Introductionmentioning

confidence: 99%

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Biochar Improves Root Growth of Sapium sebiferum (L.) Roxb. Container Seedlings

Chen

2021

Agronomy

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Background: The faulty development of the root system is a major threat that affects the survival rate of container seedlings of Sapium sebiferum in the transplanting and reforestation processes. The current study was conducted to determine the impact of biochar on the root growth and development of S. sebiferum container seedlings. Methods: Varied concentrations (1%, 3%, and 5%) of straw and bamboo biochar were applied in six groups, whereas the control group (CK) was only treated with matrix. Results: The treatment with 3% straw biochar (C2) proved to be the most effective soil conditioner for cultivating S. sebiferum seedlings. Moreover, C2 increased seedling height (58.92%); ground diameter (33.86%, biomass of the over-ground part (12.73 g), the underground part (7.48 g), and the fibrous part (0.076 g) compared to the CK (control). Conclusions: Biochar not only improved the root morphology by developing primary lateral roots, but it also accelerated the assimilation of N from the matrix to indirectly facilitate stem growth through enhancing NR activity. The change in root growth strategy contributed to the growth in S. sebiferum seedlings, thereby improving the survival rate during transplanting and reforestation.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Biochar Improves Root Growth of Sapium sebiferum (L.) Roxb. Container Seedlings

Chen

2021

Agronomy

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“…However, the nutrients in FTHSB were released slowly through the microholes in the brick, which kept the nitrogen concentration in the soil at a stable level ( Ren et al., 2022 ). Adding biochar could improve the N fertilizer utilization efficiency, which was mainly due to the fact that biochar improves the water retention and cation exchange capacity of fluvo-aquic soil, thus increasing the nitrogen uptake by aboveground parts ( Nikolas et al., 2017 ; Li et al., 2020 ). In addition, natural nanomaterials vermiculite and montmorillonite could also improve the retention of nitrogen and reduce the loss in soil, thus improving the NUE of plants.…”

Section: Discussionmentioning

confidence: 99%

Application fruit tree hole storage brick fertilizer is beneficial to increase the nitrogen utilization of grape under subsurface drip irrigation

Yao,

Yang,

Jia

et al. 2023

Front. Plant Sci.

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It is very important to promote plant growth and decrease the nitrogen leaching in soil, to improve nitrogen (N) utilization efficiency. In this experiment, we designed a new fertilization strategy, fruit tree hole storage brick (FTHSB) application under subsurface drip irrigation, to characterise the effects of FTHSB addition on N absorption and utilization in grapes. Three treatments were set in this study, including subsurface drip irrigation (CK) control, fruit tree hole storage brick A (T1) treatment, and fruit tree hole storage brick B (T2) treatment. Results showed that the pore number and size of FTHSB A were significantly higher than FTHSB B. Compared with CK, T1 and T2 treatments significantly increased the biomass of different organs of grape, N utilization and 15N content in the roots, stems and leaves, along with more prominent promotion at T1 treatment. When the soil depth was 15–30 cm, the FTHSB application significantly increased the soil 15N content. But when the soil depth was 30–45 cm, it reduced the soil 15N content greatly. T1 and T2 treatments obviously increased the activities of nitrite reductase (NR) and glutamine synthetase (GS) in grape leaves, also the urease activity(UR) in 30 cm of soil. Our findings suggest that FTHSB promoted plant N utilization by reducing N loss in soil and increasing the enzyme activity related to nitrogen metabolism. In addition, this study showed that FTHSB A application was more effective than FTHSB B in improving nitrogen utilization in grapes.

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“…Researches have shown biochar application to be benefit plant growth, biomass and plant nutrient uptake in saline- alkali soil, as it can efficiently boost soil nutrient and reduce soil salinity ( Cui et al., 2021 ; Li et al., 2021 ; Zhang et al., 2022 ). But biochar addition can potentially have negative effects on soil and the growth of plants.…”

Section: Introductionmentioning

confidence: 99%

Biochar addition can negatively affect plant community performance when altering soil properties in saline-alkali wetlands

Wang,

He,

et al. 2024

Front. Plant Sci.

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Biochar is a widely proposed solution for improving degraded soil in coastal wetland ecosystems. However, the impacts of biochar addition on the soil and plant communities in the wetland remains largely unknown. In this study, we conducted a greenhouse experiment using soil seed bank from a coastal saline-alkaline wetland. Three types of biochar, including Juglans regia biochar (JBC), Spartina alterniflora biochar (SBC) and Flaveria bidentis biochar (FBC), were added to the saline-alkaline soil at ratios of 1%, 3% and 5% (w/w). Our findings revealed that biochar addition significantly increased soil pH, and increased available potassium (AK) by 3.74% - 170.91%, while reduced soil salinity (expect for 3% SBC and 5%SBC) by 28.08% - 46.93%. Among the different biochar types, the application of 5% FBC was found to be the most effective in increasing nutrients and reducing salinity. Furthermore, biochar addition generally resulted in a decrease of 7.27% - 90.94% in species abundance, 17.26% - 61.21% in community height, 12.28% - 56.42% in stem diameter, 55.34% - 90.11% in total biomass and 29.22% - 78.55% in root tissue density (RTD). In particular, such negative effects was the worst in the SBC samples. However, 3% and 5% SBC increased specific root length (SRL) by 177.89% and 265.65%, and specific root surface area (SRSA) by 477.02% and 286.57%, respectively. The findings suggested that the plant community performance was primarily affected by soil pH, salinity and nutrients levels. Furthermore, biochar addition also influenced species diversity and functional diversity, ultimately affecting ecosystem stability. Therefore, it is important to consider the negative findings indirectly indicate the ecological risks associated with biochar addition in coastal salt-alkaline soils. Furthermore, Spartina alterniflora was needed to desalt before carbonization to prevent soil salinization when using S. alterniflora biochar, as it is a halophyte.

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Biochar addition affects root morphology and nitrogen uptake capacity in common reed (Phragmites australis)

Cited by 24 publications

References 43 publications

Biochar Improves Root Growth of Sapium sebiferum (L.) Roxb. Container Seedlings

Biochar Improves Root Growth of Sapium sebiferum (L.) Roxb. Container Seedlings

Application fruit tree hole storage brick fertilizer is beneficial to increase the nitrogen utilization of grape under subsurface drip irrigation

Biochar addition can negatively affect plant community performance when altering soil properties in saline-alkali wetlands

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