Rice husk biochar application to paddy soil and its effects on soil physical properties, plant growth, and methane emission

Pratiwi, Endita Prima Ari; Shinogi, Yoshiyuki

doi:10.1007/s10333-015-0521-z

Cited by 92 publications

(36 citation statements)

References 42 publications

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“…Only biochar using dry coconut shells increased significantly the total porosity and microporosity at the same time, but had no significant effect on macroporosity. These results disagreed with those of Pratiwi and Shinogi (2016) who reported that biochar amendment using rice husk at 4% raised significantly soil macropores, but had no significant effect on micropores. Although, these authors indicate that macropores had considerably decreased during the growing period while increased micropores.…”

Section: Effects Of Biochar On Physical Soil Propertiescontrasting

confidence: 99%

Substrates Formulated with Biochar for Seedling Production of Moringa oleifera Lam.

Soares¹,

Lima²,

Almeida³

et al. 2019

JAS

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Moringa oleifera is an allogamous plant that is propagated by seeds and cuttings, rich in vitamin A and C, phosphorus, calcium and proteins. However, its best propagation form for the large-scale production is still unknown, as well the most suitable substrate for seedling production. Production of forest species seedlings with a high quality is directly related to physical and chemical substrates properties. Using biochar as substrate for seedlings production is an economical and sustainable solution for this proposal. The aim of this study was to evaluate the influence of three biochar types, in two concentrations, for production of Moringa oleifera seedlings. Three types of substrates were formulated using residues of dry coconut shells, sewage sludge and orange bagasse. The experiment was carried out in a greenhouse, installed in a completely randomized design, consisting of seven treatments (substrates formulated with biochar in two doses, 1 and 2%) and the control, with four replicates, totalizing 28 seedlings. One month after sowing, the seedlings were evaluated biweekly for 60 days in relation to stem base diameter, shoot heigh, leaves number, shoot dry matter, root dry matter, total seedling dry matter and Dickson Quality Index. The substrate formulated using sewage sludge biochar at 2% provided a greater increasing in shoot dry matter. This concentration improved seedling height and stem base diameter in 10.5 and 0.83 mm, respectively, compared to the control. In general, biochar improved physical and chemical soil quality, promoting a better M. oleifera seedlings development.

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Section: Effects Of Biochar On Physical Soil Propertiescontrasting

confidence: 99%

Substrates Formulated with Biochar for Seedling Production of Moringa oleifera Lam.

Soares¹,

Lima²,

Almeida³

et al. 2019

JAS

View full text Add to dashboard Cite

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“…Furthermore, while application of large amounts of biochar generally reduces bulk density. Pratiwi and Shinogi (2016) found that biochar application even at rates as high as 2% by weight (which is equivalent to about 50 Mg ha -1 of biochar) did not affect bulk density. This suggests that biochar effects should be evaluated on a site-specific basis.…”

Section: Biochar and Compaction Or Mechanical Properties Bulk Densitymentioning

confidence: 99%

Biochar and Soil Physical Properties

Blanco‐Canqui

2017

Soil Science Society of America Journal

696

374

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Biochar is considered to be a potential soil amendment. However, its implications for soil physical and hydraulic properties have not been widely discussed. Changes in the soil physical environment influence the numerous services that soils provide. This paper (i) reviewed the impacts of biochar on soil compaction, mechanical, structural, hydraulic, and thermal properties; (ii) discussed factors affecting biochar performance; and (iii) identified research areas. Biochar generally reduces soil bulk density by 3 to 31%, increases porosity by 14 to 64%, and has limited or no effects on penetration resistance. Biochar increases wet aggregate stability by 3 to 226%, improves soil consistency, and has mixed effects on dry soil aggregate stability. It increases available water by 4 to 130%. Saturated hydraulic conductivity decreases in coarse-textured soils, and increases in fine-textured soils following biochar application. Studies on other properties are few but suggest that biochar reduces tensile strength and particle density, alters water infiltration, moderates soil thermal properties, and has minimal effect on soil water repellency. Sandy soils appear to respond more to biochar than clayey soils. Biochar effectiveness increases as the amount of biochar applied increases. A decrease in biochar particle size can increase water retention but may reduce saturated flow. Field-scale and long-term studies assessing all soil physical properties under different scenarios of biochar management are needed. Overall, biochar generally improves the soil physical environment, but long-term field studies are lacking to conclusively ascertain the extent of biochar effects.Abbreviations: COLE, coefficient of linear extensibility; WDPT, water drop penetration test

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“…Rice husk is also used as a raw material during composting and rice husk ash is directly applied to improve the fertility status of soil (Badar and Qureshi, 2014;Priyadharshini and Seran, 2009). Production of biochar from rice husk and applying them into paddy fields, is another way of utilizing the beneficial structural and chemical properties of rice husk effectively (Pratiwi and Shinogi, 2016).…”

Section: Introductionmentioning

confidence: 99%

Changes in structural and chemical properties of rice husk biochar co-pyrolysed with Eppawala rock phosphate under different temperatures

et al. 2018

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Although properties of rice husk biochar (RHB) can be changed by altering pyrolysis temperature, they still remain as a poor-qualitysoil amendment. We hypothesised that addition of phosphate rock powder during the pyrolysis process will enhance structural and chemical properties of RHB. This experiment was conducted to determine the effect of temperature on properties of RHB co-pyrolysed with Eppawala Rock Phosphate (ERP). Rice husk was slow-pyrolysed at 350 °C, 500 °C and 650 °C, with and without 4.2% ERP (w/w), and produced six different types of RHB. Scanning electron micrographs showed an improved pore structure in RHB with increasing pyrolysis temperature, however co-pyrolysis with ERP did not show any further improvements. Raman spectroscopy provided evidence for increased aromatisation with the increase in temperature and formation of-PCH3 (sp 2 bond) in RHB co-pyrolysed with ERP at 350 °C. Iodine number in RHB increased by 140 mg/g when the temperature increased from 350 °C to 650 °C, however it has increased more in the presence of ERP at 350°C. The pH, EC, and available nutrients (P, K and Mg) in RHB increased with increasing temperature. Addition of ERP increased available P by 3-fold at all temperatures and K by 13% in RHB under 500 °C. We conclude that chemical properties of RHB can be improved by co-pyrolysing rice husk with ERP. When all characteristics were assessed together, biochar pyrolysed at 500 °C appears to be the most suitable soil amendment to improve soil fertility among conditions tested.

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Rice husk biochar application to paddy soil and its effects on soil physical properties, plant growth, and methane emission

Cited by 92 publications

References 42 publications

Substrates Formulated with Biochar for Seedling Production of Moringa oleifera Lam.

Substrates Formulated with Biochar for Seedling Production of Moringa oleifera Lam.

Biochar and Soil Physical Properties

Changes in structural and chemical properties of rice husk biochar co-pyrolysed with Eppawala rock phosphate under different temperatures

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