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Effect of biochar application on mineral and microbial properties of soils growing different plant species

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Title: Effect of biochar application on mineral and microbial properties of soils growing different plant species
Authors: Hairani, Anna Browse this author
Osaki, Mitsuru Browse this author →KAKEN DB
Watanabe, Toshihiro Browse this author →KAKEN DB
Keywords: Microbial activity
mineral element
organic manure
wood biochar
Issue Date: Nov-2016
Publisher: Taylor & Francis
Journal Title: Soil science and plant nutrition
Volume: 62
Issue: 5-6
Start Page: 519
End Page: 525
Publisher DOI: 10.1080/00380768.2016.1212648
Abstract: Biochar is widely used as a soil amendment to increase crop yields. However, the details of its impact on soil properties have not been fully understood. A pot experiment was conducted using soybean (Glycine max (L.) Merr. cv. Toyoharuka) and sorghum (Sorghum bicolor (L.) Moench cv. Hybrid Sorgo) under four soil treatment combinations (cattle farmyard manure with or without biochar and rapeseed cake with or without biochar) to elucidate the mechanisms of its beneficial effects on plant growth in terms of the microbial community structure and mineral availability in soils with different types of organic manure application. The application of biochar significantly increased the growth of both species, particularly sorghum with rapeseed cake application by 1.48 times higher than that without biochar. Microbial activity in soil was also enhanced by biochar application in both species with rapeseed cake application, particularly in sorghum. Principal component analysis using Biolog EcoPlate (TM) data indicated that biochar application changed the microbial community structure in soil, particularly sorghum-grown soil. The changes in microbial community structure in sorghum were considered to be at least partly affected by changes in soil pH due to interaction between plant and biochar under organic manure application. Biochar application had little effect on the profile of ammonium-acetate-extractable mineral elements in soil including calcium, potassium, magnesium, sodium and sulfur with both types of manure application under soybean. Under sorghum, however, biochar with rapeseed cake manure application altered the profile. This alteration is attributable to an increase in the extractable concentration of certain metals in the soil including aluminum, cadmium and zinc, possibly caused by enhanced organic matter decomposition producing metal-chelating organic compounds. These different changes in the soil properties by biochar application may be directly or indirectly related to the different growth responses of different plant species to biochar application under organic manure application.
Rights: This is an Accepted Manuscript of an article published by Taylor & Francis in Soil science and plant nutrition on 2016 Nov, available online:
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 渡部 敏裕

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