Effects of biochar as a peat-based substrate component on morphological, photosynthetic and biochemical characteristics of Rhododendron delavayi Franch.

Bu, Xiaoli; Ji, Huijuan; Ma, Wenqi; Chang-long, MU; Xian, Ting; Zhou, Zhidong; Wang, Fei; Xue, Jinghua

doi:10.1016/j.scienta.2022.111148

Cited by 10 publications

(8 citation statements)

References 40 publications

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“…Biochar addition showed no significant effect on the leaf N concentration of petunia plants, consistent with findings from a study by [53], who reported that 10%, 20%, 30%, and 40% wood-chip and rice-husk biochar showed no difference in N concentration in the leaves of rhododendron (Rhododendron delavayi Franch.). Even though the substrate had a high C/N ratio, there were no significant differences in foliar N concentrations, indicating negligible N immobilization [49].…”

Section: Effects On Leaf Nutrient Contentsupporting

confidence: 91%

Determining Eastern Red Cedar Biochar Soilless-Media Supplementation Rates for Potted Geranium and Petunia Production

Lamichhane,

Dunn,

Singh

et al. 2024

Horticulturae

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The use of biochar in soilless media is becoming more common in greenhouse production. This study was conducted to evaluate Eastern red cedar biochar as a soilless-media supplement for the growth of geranium (Pelargonium graveolens L.) and petunia (Petunia sp. J.) as potted plants in greenhousese. Eastern red cedar biomass was produced at three different temperature ranges 300–350 °C, 400–450 °C, and 500–550 °C and applied at 15%, 30%, 45%, and 60% v/v to a soilless media plus a control. Additionally, Eastern red cedar (ERC) bark was also applied at 15%, 30%, 45%, and 60% v/v to a soilless media. The growth characteristics of the plants along with the physical and nutrient properties of the growth media were recorded. For physical properties, 100% soilless media had the greatest bulk density, 60% biochar at 400–450 °C showed the greatest total porosity, and 60% ERC bark showed the greatest air porosity. For geranium, 15% biochar at 500–550 °C showed the greatest height, water use efficiency, and shoot dry weight, while 15% biochar at 300–350 °C showed the greatest width. The greatest number of flowers was at 45% biochar at 500–550 °C. For petunia, 15% biochar at 300–350 °C showed the greatest height, and 15% biochar at 500–550 °C showed the greatest width. The greatest number of flowers and flower diameter was achieved with 100% soilless media. The 15% biochar at 500–550 °C had the greatest shoot dry weight and water use efficiency, and 60% biochar at 400–450 °C had the greatest root dry weight. Biochar treatment outperforms the ERC bark treatment for both species. Within biochar treatment, 15% biochar outperforms dry biomass, while for flowering, 100% soilless media performs best for petunia, and biochar performs best at less than 45% for geranium.

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Section: Effects On Leaf Nutrient Contentsupporting

confidence: 91%

Determining Eastern Red Cedar Biochar Soilless-Media Supplementation Rates for Potted Geranium and Petunia Production

Lamichhane,

Dunn,

Singh

et al. 2024

Horticulturae

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“…In potted Alpinia zerumbet, Zulfiqar et al (2021b) evaluated the impact of BC incorporation in a peat-perlite-based growing medium; growth improved with 30% BC (v/v) alone or in combination with 5% compost by regulating NPK uptake and leaf gas exchange traits. In Rhododendron delavayi Franch., Bu et al (2022) evaluated the impact of two BC (v/v) applications in peatbased growing media, reporting improved plant and root growth, photosynthesis, and contents of carotenoids, polyphenols, and anthocyanins. The authors suggested using peat-based substrates containing 20% wood chip BC or 30%-40% rice husk BC for good growth.…”

Section: Biochar As a Component Of Container Substratesmentioning

confidence: 99%

Biochar: An emerging recipe for designing sustainable horticulture under climate change scenarios

Zulfiqar

Moosa²,

Nazir³

et al. 2022

Front. Plant Sci.

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The interest in sustainable horticulture has recently increased, given anthropogenic climate change. The increasing global population will exacerbate the climate change situation induced by human activities. This will elevate global food demands and the vulnerability of horticultural systems, with severe concerns related to natural resource availability and usage. Sustainable horticulture involves adopting eco-friendly strategies to boost yields while maintaining environmental conservation. Biochar (BC), a carbon-rich material, is widely used in farming to improve soil physical and chemical properties and as an organic substitute for peat in growing media. BC amendments to soil or growing media improve seedling growth, increase photosynthetic pigments, and enhances photosynthesis, thus improving crop productivity. Soil BC incorporation improves abiotic and biotic stress tolerance, which are significant constraints in horticulture. BC application also improves disease control to an acceptable level or enhance plant resistance to pathogens. Moreover, BC amendments in contaminated soil decrease the uptake of potentially hazardous metals, thus minimizing their harmful effects on humans. This review summarizes the most recent knowledge related to BC use in sustainable horticulture. This includes the effect of BC on enhancing horticultural crop production and inducing resistance to major abiotic and biotic stresses. It also discuss major gaps and future directions for exploiting BC technology.

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“…This suggests that BCP showed better promotion effects on photosynthetic parameters of lettuce than PGPR or SBC used alone. Bu et al (2022) reported that the appropriate addition of rice husk biochar or wood chip biochar enhanced the photosynthetic activities ( P n , G s , and T r ) of R. delavayi seedling. Huang et al (2019) declared that the 10% (w/w) straw biochar treatment significantly improved the P n of Phragmites communis with 64.07% higher than that of the CK treatment.…”

Section: Resultsmentioning

confidence: 99%

“…Compared with the T1 and T5 treatments, the T4 treatment containing 10% SBC showed significantly ( p < 0.05) low agronomic traits, including 2.61 g of AGFW, 0.96 g of UGFW,136.99 mm of PH and 7.56 of LN ( Figures 2B , C , E ). A previous study suggested that a peat based substrate containing 20% (v/v) wood chip biochar or 30–40% (v/v) rice husk biochar was a favorable growth media for obtaining high-quality Rhododendron delavayi seedlings ( Bu et al, 2022 ). Although the recommended dosage of biochar in many previous literatures was 1–5% (w/w) ( Fang et al, 2020 ; Wan et al, 2022 ), in this study, 10% (v/v) SBC (1% w/w) was not suitable for lettuce seedling.…”

Section: Resultsmentioning

confidence: 99%

Biochar immobilized plant growth-promoting rhizobacteria enhanced the physicochemical properties, agronomic characters and microbial communities during lettuce seedling

Guan

Wang

et al. 2023

Front. Microbiol.

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Spent mushroom substrate (SMS) is the by-products of mushroom production, which is mainly composed of disintegrated lignocellulosic biomass, mushroom mycelia and some minerals. The huge output and the lack of effective utilization methods make SMS becoming a serious environmental problem. In order to improve the application of SMS and SMS derived biochar (SBC), composted SMS (CSMS), SBC, combined plant growth-promoting rhizobacteria (PGPR, Bacillus subtilis BUABN-01 and Arthrobacter pascens BUAYN-122) and SBC immobilized PGPR (BCP) were applied in the lettuce seedling. Seven substrate treatments were used, including (1) CK, commercial control; (2) T1, CSMS based blank control; (3) T2, T1 with combined PGPR (9:1, v/v); (4) T3, T1 with SBC (19:1, v/v); (5) T4, T1 with SBC (9:1, v/v); (6) T5, T1 with BCP (19:1, v/v); (7) T6, T1 with BCP (9:1, v/v). The physicochemical properties of substrate, agronomic and physicochemical properties of lettuce and rhizospheric bacterial and fungal communities were investigated. The addition of SBC and BCP significantly (p < 0.05) improved the total nitrogen and available potassium content. The 5% (v/v) BCP addiction treatment (T5) represented the highest fresh weight of aboveground and underground, leave number, chlorophyll content and leaf anthocyanin content, and the lowest root malondialdehyde content. Moreover, high throughput sequencing revealed that the biochar immobilization enhanced the adaptability of PGPR. The addition of PGPR, SBC and BCP significantly enriched the unique bacterial biomarkers. The co-occurrence network analysis revealed that 5% BCP greatly increased the network complexity of rhizospheric microorganisms and improved the correlations of the two PGPR with other microorganisms. Furthermore, microbial functional prediction indicated that BCP enhanced the nutrient transport of rhizospheric microorganisms. This study showed the BCP can increase the agronomic properties of lettuce and improve the rhizospheric microbial community.

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Effects of biochar as a peat-based substrate component on morphological, photosynthetic and biochemical characteristics of Rhododendron delavayi Franch.

Cited by 10 publications

References 40 publications

Determining Eastern Red Cedar Biochar Soilless-Media Supplementation Rates for Potted Geranium and Petunia Production

Determining Eastern Red Cedar Biochar Soilless-Media Supplementation Rates for Potted Geranium and Petunia Production

Biochar: An emerging recipe for designing sustainable horticulture under climate change scenarios

Biochar immobilized plant growth-promoting rhizobacteria enhanced the physicochemical properties, agronomic characters and microbial communities during lettuce seedling

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