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Biochar improves plant growth and reduces nutrient leaching in red clay loam and sandy loam

journal contribution
posted on 06.12.2017, 00:00 by Kalpana Pudasaini, Nanjappa Ashwath, Kerry Walsh, Thakur Bhattarai
Abstract: A factorial pot experiment was conducted using two types of soils (sandy loam and red clay loam) that are commonly used for commercial vegetable production in Bundaberg, region of Central Queensland Australia. The soils were amended with 0, 25, 50 and 75 t/ha of green waste biochar and minimum doses of N, P and K (30 kg/ha, 30 kg/ha and 40 kg/ha respectively). After two weeks of plant establishment, the pots were leached with 1.5 litres of deionised water at week intervals, and cation concentrations of the leachate were determined. In 25 t/ha biochar treatment, there was a significant (P<0.05) reduction in K and Ca leaching by 40% and 26% respectively from sandy loam, and of Ca by 23% from the red clay loam. Soil water holding capacity and soil organic carbon were also increased in both biochar treated soils. After 12 weeks of growth, shoot weight was significantly (P<0.05) higher in 25 t/ha biochar-treated sandy loam and red clay loam (32% and 31% respectively). These results clearly demonstrated that a higher yield of capsicum can be achieved from green waste biochar application in sandy loam and red clay loam at 25 t/ha biochar.

Funding

Category 3 - Industry and Other Research Income

History

Issue

2012

Start Page

86

End Page

90

Number of Pages

5

ISSN

1998-5452

Location

Nepal

Publisher

Environmental Resources Group (Nepal)

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Centre for Plant and Water Science; TBA Research Institute;

Era Eligible

Yes

Journal

Hydro Nepal : journal of water, energy and environment.

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