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Wood base biochar alters inorganic N

journal contribution
posted on 26.07.2018, 00:00 by Shahla Hosseini BaiShahla Hosseini Bai, Chengyuan XuChengyuan Xu, ZH Xu, TJ Blumfield, HM Wallace, DA Walton, BW Randall, L Van Zwieten
Sustainable nut production and supply depend on soil nutrient availability, but current land management practices in macadamia farms, including soil erosion and minimal inter row groundcover in established orchards can reduce soil carbon (C) and impair soil fertility. Therefore, nut production in macadamia orchards relies heavily on inorganic and organic fertiliser application which brings an economic burden for farmers. Biochar, a C rich product from the pyrolysis of organic residues, has been shown to improve soil fertility and fertiliser use efficiency. In the current study, we aimed to explore the effects of a wood-based biochar at two application rates of 10 t/ha (B10) and 30 t/ha (B30) on soil C and nitrogen (N) cycling at months 0, 6, 12, 18 and 24 following its application to a macadamia orchard. No significant effects of biochar on soil soluble organic C and N were observed at months 0, 6 and 12 following biochar application. At months 12, 18 and 24, biochar significantly increased soil nitrate concentration with B30 compared to the control and B10 but differences were significant only at month 12.

History

Issue

1109

Start Page

1

End Page

6

Number of Pages

6

eISSN

2406-6168

ISSN

0567-7572

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Griffith University Nathan QLD 4111 Australia; University of the Sunshine Coast Maroochydore QLD 4558 Australia, Griffith University , Griffith University Nathan QLD 4111 Australia, University of the Sunshine Coast Maroochydore QLD 4558 Australia, Department of Primary Industries Wollongbar NSW Australia

Era Eligible

Yes

Journal

Acta Horticulturae