Evaluating the effects of biochar on the hydraulic properties of acidified soil in China

Lu, Jikai; Luo, Yina; Huang, Junlin; Hou, Bingyan; Wang, Bing; Ogino, Kenji; Zhao, Jian; Si, Hongyu

doi:10.1007/s11368-022-03327-4

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…[10] investigated the effect of biochar addition on water retention in tropical soils of different textures and observed a 62% enhancement in typical tetrads, a 38% increase in old mature soils, and an 18% improvement in leached soils. It has been reported that the addition of biochar can improve soil aggregates, increase the average soil water content, and alleviate issues associated with poor soil water retention [11]. Coconut bran is rich in cellulose and phenolic substances, which offer effective water and fertilizer conservation properties.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Water Storage and Fertilizer Retention Substrates on Growth, Yield and Quality of Strawberry

Tang,

Li,

Fang

et al. 2024

Agronomy

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To address the problems of inadequate water and fertilizer retention performance of the substrate, which results in the waste of water and fertilizer resources and then contributes to existing agricultural non-point source pollution, this study selected raw materials with different water retention performances for substrate compounding and explored their water retention performance and impact on the growth, yield and quality of strawberries. The experimental setup utilized the strawberry cultivar ‘Hongyan’ as the test subject and incorporated different proportions of vermicompost, coconut bran, biochar and humic acid into the organic fertilizer. A total of 12 treatment groups were formed across three gradients, involving different proportions of vermicompost with 0.05, 0.10 and 0.15 proportions of coconut bran/biochar and 0.05, 0.15 and 0.20 proportions of humic acid. To evaluate the water retention performance, uniform water and fertilizer regulations were applied. The results revealed that the treatment groups T4 (vermicompost:coconut bran = 0.5:0.1) and T5 (vermicompost:biochar = 0.5:0.1) exhibited higher water absorption multiplicity, lower water infiltration rates, and better water retention performances, but there was no significant difference between the two treatment groups. Among them, T4 could effectively improve the nutrient content of the substrate, and the substrate nitrogen-use efficiency (NUE) increased by 5.80% compared with CK2. Also, plant total nitrogen (TN) and total phosphorus (TP) uptake increased by 81.18% and 4.74%, respectively, compared with CK2, which in turn promoted the growth and development of the plant and improved the fruit yield and quality to a certain extent. Meanwhile, T4 had the highest urease and catalase activities, with sucrase activity ranking second only to T1. In contrast, T5 demonstrated greater effectiveness in improving the average fruit weight and maximum fruit weight, registering increases of 22.98% and 36.22% compared to CK2, respectively, but the effect on the total yield was less pronounced. A comprehensive evaluation of strawberry growth found that the T4 treatment was superior. In conclusion, the ratio of vermicompost and coconut bran at 0.5:0.1 improved and promoted the substrate water retention performance and strawberry growth.

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Section: Introductionmentioning

confidence: 99%

Effects of Different Water Storage and Fertilizer Retention Substrates on Growth, Yield and Quality of Strawberry

Tang,

Li,

Fang

et al. 2024

Agronomy

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Naturally Deposited Charcoal Enhances Water Retention Capacity of Subtropical Forest Soils

Cheng,

Wang,

Yao

et al. 2024

Forests

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Charcoal, a byproduct resulting from incomplete combustion of biomass in fire events, can modify the physical properties of soil due to its high porosity and large surface area. To evaluate the impact of fire-deposited charcoal on soil hydraulic characteristics, soil–charcoal mixtures were analyzed to investigate the effects of different application doses (wt%: 0, 1%, 3%, 5%, 10% and 20%) of charcoal on soil bulk density (BD), porosity (total, capillary, and non-capillary), residual moisture after free drainage (RM), saturated water content (SC), and saturated hydraulic conductivity (Ks) of loamy and sandy soils collected from subtropical forests in south China. The results showed that the impact of charcoal on soil’s physical and hydraulic properties depends on the soil type and the application dose. The incorporation of charcoal significantly decreased the BD of sandy soil (p < 0.001), while a significant decrease in BD in loamy soil was only observed as a result of the higher application doses (10% and 20%) (p < 0.001). Charcoal application doses of 5% or higher led to a significant increase in the total porosity (TP) of sandy soil (p < 0.001) and doses of 3% and 20% resulted in a significant increase in the TP of loamy soil (p < 0.001). The capillary porosity (CP) of both sand and loamy soils significantly increased when charcoal was applied at doses of 3% or higher (p < 0.001). The minimum charcoal application dose that significantly increased the RM in sandy soil was 5%, while for loamy soil, the minimum effective dose was 10%. Charcoal applied at a dose of 3% significantly increased the Ks of sandy soil (p < 0.001), while no significant effect on Ks was observed for loamy soil (p > 0.05). Collectively, our findings suggest that fire-derived charcoal enhances the soil water-retention capacity in subtropical forests, with the effects becoming more pronounced at higher application doses and being particularly notable in sandy soil compared to loamy soil.

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Evaluating the effects of biochar on the hydraulic properties of acidified soil in China

Cited by 2 publications

References 22 publications

Effects of Different Water Storage and Fertilizer Retention Substrates on Growth, Yield and Quality of Strawberry

Effects of Different Water Storage and Fertilizer Retention Substrates on Growth, Yield and Quality of Strawberry

Naturally Deposited Charcoal Enhances Water Retention Capacity of Subtropical Forest Soils

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