Impact of 60 Years of Intensive Rice Cropping on Clay Minerals in Soils Due to Si Exportation

Irfan, Kamran

doi:10.11648/j.ajaf.20170503.12

Cited by 5 publications

(5 citation statements)

References 29 publications

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“…More recently, it was shown at Morrow plot experiment field (USA) that continuous cropping for 110 years led to an increase in fine clay particles (<0.05 mm) [18], which is an indicator of clay mineral dissolution. In a rice paddy field in Camargue (France), the decreased crystallinity of smectite was attributed to rice cultivation and its subsequent Si uptake [19]. However, no associated Si concentrations in plants were reported in that study, or in the other abovementioned studies.…”

Section: Introductionmentioning

confidence: 70%

Are Clay Minerals a Significant Source of Si for Crops? A Comparison of Amorphous Silica and the Roles of the Mineral Type and pH

Keller

Rizwan

Meunier

2021

Silicon

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programme EC2CO (Ecosphère continentale et côtière), the BIOSiSOL project (ANR-14-CE01-0002) and by the Indo-French Centre for the Promotion of Advanced Research (IFCPAR/CEFIPRA project n°5109-1). We thank Haider Allami and Jing Sha, MSc, for their work on the project, N.B.Prakash for his help in the selection of the rice cultivar and for providing the seeds, S. Jézéquel (ARVALIS-Institut du végétal) for providing the wheat seeds and Sibelco for providing quartz.

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Section: Introductionmentioning

confidence: 70%

Are Clay Minerals a Significant Source of Si for Crops? A Comparison of Amorphous Silica and the Roles of the Mineral Type and pH

Keller

Rizwan

Meunier

2021

Silicon

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“…The correlation of Si CaCl2 with pH indicated that Si CaCl2 concentration may be controlled by Si adsorbed on the surface of soil minerals and/or by the soil weathering state 25,26 . The correlation of Si CaCl2 with the < 2 µm fraction can be attributed to the presence of small phytoliths 49 , clay mineral dissolution 50 , or adsorption onto clay minerals 51 . Nevertheless, while Si CaCl2 linearly increased with the < 2 µm fraction in non-cultivated soils regardless of parent material (Fig.…”

Section: Soil Parent Material/typementioning

confidence: 99%

Agriculture increases the bioavailability of silicon, a beneficial element for crop, in temperate soils

Caubet

Cornu

Saby

et al. 2020

Sci Rep

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Crops may take benefits from silicon (Si) uptake in soil. Plant available Si (PAS) can be affected by natural weathering processes or by anthropogenic forces such as agriculture. The soil parameters that control the pool of PAS are still poorly documented, particularly in temperate climates. In this study, we documented PAS in France, based on statistical analysis of Si extracted by CaCl2 (SiCaCl2) and topsoil characteristics from an extensive dataset. We showed that cultivation increased SiCaCl2 for soils developed on sediments, that cover 73% of France. This increase is due to liming for non-carbonated soils on sediments that are slightly acidic to acidic when non-cultivated. The analysis performed on non-cultivated soils confirmed that SiCaCl2 increased with the < 2 µm fraction and pH but only for soils with a < 2 µm fraction ranging from 50 to 325 g kg−1. This increase may be explained by the < 2 µm fraction mineralogy, i.e. nature of the clay minerals and iron oxide content. Finally, we suggest that 4% of French soils used for wheat cultivation could be deficient in SiCaCl2.

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“…According to Vandevenne et al (2012) agriculture may have disturbed the natural cycle of Si because plant materials do not return to the field and are injected into the urban cycle. Several perturbations have been documented in the surface soil horizons: depletion of the phytolith pool (Struyf et al, 2010;Clymans et al, 2011;Guntzer et al, 2012;Vandevenne et al, 2015a) and a decrease of crystallinity of clays (Irfan et al, 2017). Besides, repeated crop removal can reduce the concentration of potentially available Si to the extent that Si fertilization is necessary (Datnoff and Rodrigues, 2005;Meunier et al, 2008;Savant et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Origin of silica in rice plants and contribution of diatom Earth fertilization: insights from isotopic Si mass balance in a paddy field

et al. 2017

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Background and aims The benefits of Si for crops is well evidenced but the biogeochemical cycle of Si in agriculture remains poorly documented. This study aims at identifying and quantifying the Si sources (primary and secondary soil minerals, amorphous silica, irrigation, Si-fertilizer) to rice plants. Method Field experiments were carried out with and without application of diatomaceous earth (DE) under rice and bare conditions to determine the water and dissolved mass balance in paddy fields (Karnataka, Southern India). The fate of the Si brought by irrigation (DSi) (uptake by rice, uptake by diatoms, adsorption) was assessed through a solute mass balance combined with silicon isotopic signatures. Results Above the ground-surface, about one third of the DSi flux brought by borewell irrigation (545 mmol Si.m-2) to bare plots and half of DSi in rice plots were removed from solution within minutes or hours following irrigation. Such rate is consistent with the rate of DSi adsorption onto Fe-oxyhydroxides but not with diatom blooms. In rice and rice+DE experiments, the Purity index (Si-Al)/Si molar Algal mat ASi Soil ASi Clay fraction (<2µm) rice straw Diatom earth isotopic fractionation factor (30 ε) between bore well and stagnant water compositions is close to-1 ‰, i.e. the isotopic fractionation factor known for rice, indicating that above-ground DSi removal would be dominated by plant uptake upon adsorption. Within the soil layer, pore water DSi decreases much faster in rice experiments than in bare ones, demonstrating the efficiency of DSi rice uptake upon adsorption. Total irrigation-DSi to plant-Si would then represent 24 to 36 % in rice experiments (over 1460 ± 270 mmol Si m-2 in biomass) and 15 to 23 % in rice+DE ones (over 2250 ± 180 mmol Si m-2). The δ 30 Si signature of whole plants was significantly different in the rice+DE plot analyzed, 0.99 ± 0.07 ‰, than in the rice one, 1.29 ± 0.07 ‰. According to these δ 30 Si signatures, the main Si source from the soil would be the amorphous silica pool (ASi). A slight contribution of DE to the rice plant could be detected from the Si isotopic signature of rice. Conclusions The δ 30 Si signatures of the various soil-plant compartments, when associated to Si mass balance at scale, constitute a reliable proxy of the Si behavior in paddy fields. The solute Si balance is controlled by rice uptake in rice plots and by adsorption and diatom uptake in bare ones. The main Si sources for the rice plants were soil ASi, irrigation Si and to a lesser extent Si fertilizer when it was applied.

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Impact of 60 Years of Intensive Rice Cropping on Clay Minerals in Soils Due to Si Exportation

Cited by 5 publications

References 29 publications

Are Clay Minerals a Significant Source of Si for Crops? A Comparison of Amorphous Silica and the Roles of the Mineral Type and pH

Are Clay Minerals a Significant Source of Si for Crops? A Comparison of Amorphous Silica and the Roles of the Mineral Type and pH

Agriculture increases the bioavailability of silicon, a beneficial element for crop, in temperate soils

Origin of silica in rice plants and contribution of diatom Earth fertilization: insights from isotopic Si mass balance in a paddy field

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