Influence of rice husk biochar and inorganic fertilizer on soil nutrients availability and rain-fed rice yield in two contrasting soils

The co-application of biochar and inorganic N fertilizer has been shown to be a sustainable and environmental friendly technology for the improvement of soil fertility and crop yield. However, their interactive effects on nutrient availability and rain-fed rice productivity in contrasting soil types...

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Bibliographic Details
Published in:Geoderma 2019-02, Vol.336, p.1-11
Main Authors: Oladele, S.O., Adeyemo, A.J., Awodun, M.A.
Format: Article
Language:English
Subjects:
Alfisol
Biochar
Nitrogen fertilizer
Rice productivity
Soil nutrient
Ultisol
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Summary:The co-application of biochar and inorganic N fertilizer has been shown to be a sustainable and environmental friendly technology for the improvement of soil fertility and crop yield. However, their interactive effects on nutrient availability and rain-fed rice productivity in contrasting soil types in the tropics have been scarcely studied. A field study was set up to investigate the effects of rice husk biochar and N-fertilizer applications at different rates on rain-fed rice yield and soil nutrient distribution in the 0–20 cm soil layer. Biochar was applied at four rates; 0, 3, 6, and 12 t/ha−1, in combination with N fertilizer (urea) applied at four rates; 0, 30, 60 and 90 kg/ha−1 to two different soil types (sandy clay loam Oxic-Paleustalf and sandy loam Oxic-Paleustult). In the Oxic-Paleustaif, biochar × N-fertilizer interaction significantly (p 
ISSN:0016-7061
1872-6259
DOI:10.1016/j.geoderma.2018.08.025