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Biochar Application in Malaysian Sandy and Acid Sulfate Soils: Soil Amelioration Effects and Improved Crop Production over Two Cropping Seasons
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för tillämpad miljövetenskap (ITM). Norwegian Geotechnical Institute (NGI), Norway; Norwegian University of Life Sciences, Norway.
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Antal upphovsmän: 62015 (Engelska)Ingår i: Sustainability, E-ISSN 2071-1050, Vol. 7, nr 12, s. 16756-16770Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The use of biochar as an agricultural soil improvement was tested in acid sulfate and sandy soils from Malaysia, cropped with rice and corn. Malaysia has an abundance of waste rice husks that could be used to produce biochar. Rice husk biochar was produced in a gasifier at a local mill in Kelantan as well as in the laboratory using a controlled, specially designed, top lift up draft system (Belonio unit). Rice husk biochar was applied once to both soils at two doses (2% and 5%), in a pot set up that was carried out for two cropping seasons. Positive and significant crop yield effects were observed for both soils, biochars and crops. The yield effects varied with biochar type and dosage, with soil type and over the cropping seasons. The yield increases observed for the sandy soil were tentatively attributed to significant increases in plant-available water contents (from 4%-5% to 7%-8%). The yield effects in the acid sulfate soil were likely a consequence of a combination of (i) alleviation of plant root stress by aluminum (Ca/Al molar ratios significantly increased, from around 1 to 3-5) and (ii) increases in CEC. The agricultural benefits of rice husk biochar application to Malaysian soils holds promise for its future use.

Ort, förlag, år, upplaga, sidor
2015. Vol. 7, nr 12, s. 16756-16770
Nyckelord [en]
biochar, rice husk, Malaysia, acid sulfate, pot trial, multiple seasons, corn, rice
Nationell ämneskategori
Geovetenskap och miljövetenskap Social och ekonomisk geografi
Identifikatorer
URN: urn:nbn:se:su:diva-126405DOI: 10.3390/su71215842ISI: 000367550900059OAI: oai:DiVA.org:su-126405DiVA, id: diva2:901523
Tillgänglig från: 2016-02-08 Skapad: 2016-02-01 Senast uppdaterad: 2022-03-23Bibliografiskt granskad

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Cornelissen, Gerard

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Geovetenskap och miljövetenskapSocial och ekonomisk geografi

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