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Peanut shell biochar improves soil properties and peanut kernel quality on a red Ferrosol

journal contribution
posted on 27.06.2018, 00:00 by Chengyuan Xu, Shahla Hosseini Bai, Y Hao, RCN Rachaputi, Z Xu, HM Wallace
Purpose Biochar has excellent potential to improve crop yield and quality, but its effects vary depending on soil type and agronomic inputs (e.g., irrigation and fertiliser). In this study, we investigate the effects of biochar on peanut productivity and crop quality under different irrigation and fertilisation regime in red Ferrosols. Materials and methods We applied peanut shell biochar (9.2 t ha−1) on a red Ferrosol under field conditions to examine the effects of biochar, irrigation, fertiliser and their interactions on soil properties and yield and kernel quality of the peanut variety ‘Middleton’. Results and discussion Biochar application improved kernel quality by increasing the fraction of the highest commercial grade kernels (grade ‘Jumbo’) but did not affect photosynthesis and yield of peanut. Biochar application also increased soil total C (TC), total nitrogen (TN) and C/N ratio, and changed soil C and N stable isotope composition. Soil K and Zn content was higher in biochar treatments, which partially explains the observed kernel grade improvement. Fertilisation did not improve peanut performance, and irrigation generally had a negative effect on crop yield and physiology, but these data were compromised by high rainfall during cropping. There were few interactions among biochar, irrigation and fertiliser treatments. Conclusions Peanut shell biochar improves soil organic C, nutrient availability and peanut kernel quality under different irrigation and fertiliser rate regimes in field conditions.

Funding

Other

History

Volume

15

Issue

11

Start Page

2220

End Page

2231

Number of Pages

12

eISSN

1614-7480

ISSN

1439-0108

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Griffith University; Environmental Futures Research Institute and School of Natural Sciences, Griffith University,; Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast; University of Chinese Academy of Sciences, Beijing Queensland Alliance for Agriculture and Food Innovation, University of Queensland;

Era Eligible

Yes

Journal

Journal of Soils and Sediments

Exports

CQUniversity

Categories

Exports