Mobilization of phosphate in variable-charge soils amended with biochars derived from crop straws

Jiang, Jun; Yuan, Min; Xu, Runsheng; Bish, David L.

doi:10.1016/j.still.2014.10.009

Cited by 97 publications

(31 citation statements)

References 38 publications

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“…Third, biochar application changed the form of Fe, Al, Ca, and other agents of P adsorption (fixation), all of which significantly influenced soil P transformation (Parvage, Ulén, Eriksson, Strock, & Kirchmann, ; Srivastava, Gupta, Shikha, & Tewari, ; Xu, Wei, Sun, Shao, & Chang, ). However, the previous studies indicated that biochar containing moderate Ca 2+ and Mg 2+ formed precipitates with phosphate in the soils and increases the phosphorus adsorption (Jiang, Yuan, Xu, & Bish, ). These results were agreement with our findings in which biochar application increased P sorption and decreased P availability in acidic soil due to chemical retardation of Ca 2+ and Mg 2+ (Xu, Sun, Shao, & Chang, ).…”

Section: Discussionmentioning

confidence: 98%

“…Second, incorporation of the biochar reduced soil acidity and increased soil CEC (Liang et al, ); thus, soil surface became more negatively charged and increased anion repulsion and subsequently decreased the P adsorption by the soils (Murphy & Stevens, ). The Haplic Luvisol showed increases in pH and CEC with biochar application (Table ), so P desorption may have been responsible for increasing P solubility (e.g., H 2 O‐P i ) in the soils (Jiang, Yuan, Xu, & Bish, ). Third, biochar application changed the form of Fe, Al, Ca, and other agents of P adsorption (fixation), all of which significantly influenced soil P transformation (Parvage, Ulén, Eriksson, Strock, & Kirchmann, ; Srivastava, Gupta, Shikha, & Tewari, ; Xu, Wei, Sun, Shao, & Chang, ).…”

Section: Discussionmentioning

confidence: 99%

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Nonadditive effects of biochar amendments on soil phosphorus fractions in two contrasting soils

Shao

Zhang

et al. 2018

Land Degrad Dev

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Increased soil total phosphorus (P) or available P has been reported in biochar‐amended soils, although the underlying mechanisms need to be fully understood. In the present study, two contrasting soils (acidic Haplic Luvisol and alkaline Calcaric‐Fluvisol) amended with wheat straw biochar were sequentially extracted with modified Hedley method to study the P transformation in the soils. Our results showed that biochar application significantly increased (positive effects) P fractions (except for NaHCO3‐Pi and residual‐P) content in Haplic Luvisol. The increased soil microbial activity and reduced soil acidity or increased cation exchange capacity may be accounted for enhanced P transformation. The reduced NaHCO3‐Pi content may be related to P immobilization with increased soil microbial activity induced by biochar addition because the high C:P ratios of biochar (ranged from 234 to 357) suggested net P immobilization occurred when biochar was incorporated into soil. Biochar application first (4 days) increased soil NaHCO3‐Po content and then decreased it with longer incubation time (30 days). The decrease in NaHCO3‐Po suggested that the labile organic P was converted into nonlabile inorganic or organic P. In comparison with those in Haplic Luvisol, almost all P fractions showed negative effects with biochar addition into Calcaric‐Fluvisol. The results may be caused by the P precipitation or sorption with increased soil pH with biochar application. On the basis of P transformation, biochar is recommended to be used in Haplic Luvisol (acidic soil) and not to Calcaric‐Fluvisol (alkaline soil) because of the positive effects and negative effects observed on P fractions in biochar‐amended soils.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Nonadditive effects of biochar amendments on soil phosphorus fractions in two contrasting soils

Shao

Zhang

et al. 2018

Land Degrad Dev

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“…The phosphate fertilizers associated with biochars, despite having water-extractable P greater than TSP, allowed an increase of P available after two successive maize crops. According to Jiang et al (2015), the anionic functional groups of the biochar generate CEC, which compete with P by the sorption sites in the soil increasing P availability.. In addition, biochar application to soils may increase the soil CEC due to the liming effect, which also increase P availability (Jiang et al, 2015).…”

Section: Greenhouse Pot Experimentsmentioning

confidence: 99%

Biochar association with phosphate fertilizer and its influence on phosphorus use efficiency by maize

et al. 2019

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The use of fertilizers with some degree of protection of the phosphate ions can reduce soil adsorption and increase the absorption by plants, increasing the efficiency of phosphorus (P) fertilization. This study aimed to evaluate the performance of a phosphate fertilizer associated with biochar in granules in a P-fixing soil in a greenhouse experiment. Biochars were produced from two sources of biomass: sugarcane bagasse (SB) and wood sawdust (WS), which were pyrolysed at two temperatures (350 °C and 700 °C). After chemical and physical characterization, the biochar samples were granulated with triple superphosphate (TSP) in a 3:1 ratio (TSP: biochar). The agronomic evaluation of the fertilizers was carried out by two successive maize crops (Zea mays L.) in the greenhouse, using a factorial scheme of (5x3) in randomized block design with four replicates. The treatments consisted of five fertilizers (TSP-WS350, TSP-WS700, TSP-SB350, TSP-SB700, and TSP) and three P doses (100, 200, and 400 mg dm-3). It was evaluated the dry matter production, P uptake in maize and P available in the soil after cultivation. The results indicate that dry matter production, considering the P uptake by the plant and the P available in the soil when using a dose of 400 mg dm-3, presented higher results in both crop cycles and the recovery rate in both cultivations occurred inversely to the P doses. The simple association of biochar with soluble phosphate fertilizer did not increase the efficiency of P use by maize, but it increased available P in soil.

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“…When incorporation into soil, biochar can increase P availability through directly P release from biochar and indirectly improve P use efficiency by changes in soil pH, CEC, structure, decrease P leaching and affect soil P related microbial activity Jiang et al, 2015;Zhai et al, 2015;Christel et al, 2016). Recent review suggested that P values of biochar as a soil amendment were highly depended on soil type, biochar type, and biochar rate (Scott et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Negative interactive effects between biochar and phosphorus fertilization on phosphorus availability and plant yield in saline sodic soil

Zhang

Sun

et al. 2016

Science of The Total Environment

160

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• Lower pyrolysis temperature (b 400°C) biochar retained P availability and increased plant growth.• Negative (antagonistic) interaction occurred between biochar and P fertilization on the biomass production and plant P concentration • Very limited utility value of biochar application occurred in saline sodic soil. G R A P H I C A L A B S T R A C TThe growth of Suaeda salsa in biochar amended saline sodic soils with (P 1 ) or without (P 0 ) P fertilization.a b s t r a c t a r t i c l e i n f o Little is known about the interactive effects between biochar application and phosphorus (P) fertilization on plant growth and P uptake. For this purpose, five wheat straw biochars (produced at 25°C, 300°C, 400°C, 500°C and 600°C for 4 h) with equal P (36 mg kg −1 ) amount, with and without additional P fertilization (100 mg kg) were applied in a pot experiment to investigate the growth of Suaeda salsa and their uptake of P from biochar and P fertilization amended saline sodic soil. Soil P fractions, dry matter yield, and plant P concentrations were determined after harvesting 90 days. Our results confirmed that relatively lower pyrolysis temperature (b400°C) biochar retained P availability and increased plant growth. The plant P concentration was significantly correlated with NaHCO 3 -P i (P b 0.05), and NaOH-P i (P b 0.1) during early incubation time (4 days) for biochar amended soil. As revealed by statistical analysis, a significant (P b 0.05) negative (antagonistic) interaction occurred between biochar and P fertilization on the biomass production and plant P concentration. For plant biomass, the effects size of biochar (B), P, and their interaction followed the order of B × P (0.819) N B (0.569) ≈ P (0.568) based on the partial Eta squared values whereas the order changed as P (0.782) N B (0.562) N B × P (0.515) for plant P concentration. When biochar and P fertilization applied together, phosphate precipitation/sorption reaction occurred in saline sodic soil which explained the decreased plant P Contents lists available at ScienceDirectScience of the Total Environment j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / s c i t o t e n v availability and plant yield in saline sodic soil. The negative interaction effects between biochar and P fertilization indicated limited utility value of biochar application in saline sodic soil.

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Mobilization of phosphate in variable-charge soils amended with biochars derived from crop straws

Cited by 97 publications

References 38 publications

Nonadditive effects of biochar amendments on soil phosphorus fractions in two contrasting soils

Nonadditive effects of biochar amendments on soil phosphorus fractions in two contrasting soils

Biochar association with phosphate fertilizer and its influence on phosphorus use efficiency by maize

Negative interactive effects between biochar and phosphorus fertilization on phosphorus availability and plant yield in saline sodic soil

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