Phytolith-rich biochar increases cotton biomass and silicon-mineralomass in a highly weathered soil

Zimin Li, Bruno Delvaux, Johan Yans, Nicolas Dufour, David Houben, Jean Thomas Cornelis

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Non-essential silicon (Si) is beneficial to plants. It increases the biomass of Si-accumulator plants by improving photosynthetic activity and alleviating stresses. Desilication, however, takes place because of natural soil weathering and removal of harvested biomass. Pyrolysis transforms Si-rich biomass into biochar that can be used to supply bioavailable Si. Here, we applied two biochar materials differing in Si content on soils differing in weathering stage: a young Cambisol and a highly weathered Nitisol. We studied the impact of biochar supply on the bioavailability of Si, cotton biomass, and Si mineralomass. The biochar materials derived from, respectively: Miscanthus × giganteus (Mi; 34.6 g Si kg−1 in biochar) and soft woody material (SW; 0.9 g Si kg−1 in biochar). They were compared to conventional Si fertilizer wollastonite (Wo; CaSiO3). Amendments were incorporated in soils at the rate of 3% (w/w). The content of bioavailable Si in soil was determined through 0.01 M CaCl2 extraction. In the Cambisol, the proportion (CaCl2 extractable Si: total Si content) was significantly smaller for Mi (0.9%) than for Wo (5.2%). In the Nitisol, this proportion was much larger for Mi (1.4%) than for Wo (0.7%). Mi-biochar significantly increased Si-mineralomass relatively to SW-biochar in both soils. This increase was, however, much larger in the Nitisol (5.9-fold) than in the Cambisol (2.2-fold). Mi biochar is thus an alternative Si fertilizer to Wo to supply bioavailable Si, increase plant biomass, and promote the biological cycle of Si in the soil-plant system in the Nitisol. Besides, it increased soil fertility and soil organic carbon content.

langue originaleAnglais
Pages (de - à)537-546
Nombre de pages10
journalJournal of Plant Nutrition and Soil Science
Volume181
Numéro de publication4
Les DOIs
étatPublié - 1 janv. 2018

Empreinte digitale

phytoliths
phytolith
biochar
silicon
cotton
biomass
soil
Cambisol
soil weathering
weathering
fertilizer
fertilizers
calcium silicate
Miscanthus giganteus
fold
wollastonite

Citer ceci

Li, Zimin ; Delvaux, Bruno ; Yans, Johan ; Dufour, Nicolas ; Houben, David ; Cornelis, Jean Thomas. / Phytolith-rich biochar increases cotton biomass and silicon-mineralomass in a highly weathered soil. Dans: Journal of Plant Nutrition and Soil Science. 2018 ; Vol 181, Numéro 4. p. 537-546.
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abstract = "Non-essential silicon (Si) is beneficial to plants. It increases the biomass of Si-accumulator plants by improving photosynthetic activity and alleviating stresses. Desilication, however, takes place because of natural soil weathering and removal of harvested biomass. Pyrolysis transforms Si-rich biomass into biochar that can be used to supply bioavailable Si. Here, we applied two biochar materials differing in Si content on soils differing in weathering stage: a young Cambisol and a highly weathered Nitisol. We studied the impact of biochar supply on the bioavailability of Si, cotton biomass, and Si mineralomass. The biochar materials derived from, respectively: Miscanthus × giganteus (Mi; 34.6 g Si kg−1 in biochar) and soft woody material (SW; 0.9 g Si kg−1 in biochar). They were compared to conventional Si fertilizer wollastonite (Wo; CaSiO3). Amendments were incorporated in soils at the rate of 3{\%} (w/w). The content of bioavailable Si in soil was determined through 0.01 M CaCl2 extraction. In the Cambisol, the proportion (CaCl2 extractable Si: total Si content) was significantly smaller for Mi (0.9{\%}) than for Wo (5.2{\%}). In the Nitisol, this proportion was much larger for Mi (1.4{\%}) than for Wo (0.7{\%}). Mi-biochar significantly increased Si-mineralomass relatively to SW-biochar in both soils. This increase was, however, much larger in the Nitisol (5.9-fold) than in the Cambisol (2.2-fold). Mi biochar is thus an alternative Si fertilizer to Wo to supply bioavailable Si, increase plant biomass, and promote the biological cycle of Si in the soil-plant system in the Nitisol. Besides, it increased soil fertility and soil organic carbon content.",
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Phytolith-rich biochar increases cotton biomass and silicon-mineralomass in a highly weathered soil. / Li, Zimin; Delvaux, Bruno; Yans, Johan; Dufour, Nicolas; Houben, David; Cornelis, Jean Thomas.

Dans: Journal of Plant Nutrition and Soil Science, Vol 181, Numéro 4, 01.01.2018, p. 537-546.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - Phytolith-rich biochar increases cotton biomass and silicon-mineralomass in a highly weathered soil

AU - Li, Zimin

AU - Delvaux, Bruno

AU - Yans, Johan

AU - Dufour, Nicolas

AU - Houben, David

AU - Cornelis, Jean Thomas

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Non-essential silicon (Si) is beneficial to plants. It increases the biomass of Si-accumulator plants by improving photosynthetic activity and alleviating stresses. Desilication, however, takes place because of natural soil weathering and removal of harvested biomass. Pyrolysis transforms Si-rich biomass into biochar that can be used to supply bioavailable Si. Here, we applied two biochar materials differing in Si content on soils differing in weathering stage: a young Cambisol and a highly weathered Nitisol. We studied the impact of biochar supply on the bioavailability of Si, cotton biomass, and Si mineralomass. The biochar materials derived from, respectively: Miscanthus × giganteus (Mi; 34.6 g Si kg−1 in biochar) and soft woody material (SW; 0.9 g Si kg−1 in biochar). They were compared to conventional Si fertilizer wollastonite (Wo; CaSiO3). Amendments were incorporated in soils at the rate of 3% (w/w). The content of bioavailable Si in soil was determined through 0.01 M CaCl2 extraction. In the Cambisol, the proportion (CaCl2 extractable Si: total Si content) was significantly smaller for Mi (0.9%) than for Wo (5.2%). In the Nitisol, this proportion was much larger for Mi (1.4%) than for Wo (0.7%). Mi-biochar significantly increased Si-mineralomass relatively to SW-biochar in both soils. This increase was, however, much larger in the Nitisol (5.9-fold) than in the Cambisol (2.2-fold). Mi biochar is thus an alternative Si fertilizer to Wo to supply bioavailable Si, increase plant biomass, and promote the biological cycle of Si in the soil-plant system in the Nitisol. Besides, it increased soil fertility and soil organic carbon content.

AB - Non-essential silicon (Si) is beneficial to plants. It increases the biomass of Si-accumulator plants by improving photosynthetic activity and alleviating stresses. Desilication, however, takes place because of natural soil weathering and removal of harvested biomass. Pyrolysis transforms Si-rich biomass into biochar that can be used to supply bioavailable Si. Here, we applied two biochar materials differing in Si content on soils differing in weathering stage: a young Cambisol and a highly weathered Nitisol. We studied the impact of biochar supply on the bioavailability of Si, cotton biomass, and Si mineralomass. The biochar materials derived from, respectively: Miscanthus × giganteus (Mi; 34.6 g Si kg−1 in biochar) and soft woody material (SW; 0.9 g Si kg−1 in biochar). They were compared to conventional Si fertilizer wollastonite (Wo; CaSiO3). Amendments were incorporated in soils at the rate of 3% (w/w). The content of bioavailable Si in soil was determined through 0.01 M CaCl2 extraction. In the Cambisol, the proportion (CaCl2 extractable Si: total Si content) was significantly smaller for Mi (0.9%) than for Wo (5.2%). In the Nitisol, this proportion was much larger for Mi (1.4%) than for Wo (0.7%). Mi-biochar significantly increased Si-mineralomass relatively to SW-biochar in both soils. This increase was, however, much larger in the Nitisol (5.9-fold) than in the Cambisol (2.2-fold). Mi biochar is thus an alternative Si fertilizer to Wo to supply bioavailable Si, increase plant biomass, and promote the biological cycle of Si in the soil-plant system in the Nitisol. Besides, it increased soil fertility and soil organic carbon content.

KW - bioavailable silicon

KW - biochar

KW - cotton

KW - soil desilication

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