Biochar Based Slow-Release Urea Fertilizer: Production and Assessing the Effects on Growth of Lowland Rice and Nitrogen Dynamics in an Alfisol | Zendy

M. K. N. W. Jayarathna | Zendy; R. S. Dharmakeerthi | Zendy; W. M. U. K. Rathnayaka | Zendy

Open Access

Biochar Based Slow-Release Urea Fertilizer: Production and Assessing the Effects on Growth of Lowland Rice and Nitrogen Dynamics in an Alfisol

Author(s) -

M. K. N. W. Jayarathna,

R. S. Dharmakeerthi,

W. M. U. K. Rathnayaka

Publication year - 2021

Publication title -

tropical agricultural research

Language(s) - English

Resource type - Journals

ISSN - 2706-0233

DOI - 10.4038/tar.v32i2.8464

Subject(s) - urea , biochar , fertilizer , sawdust , chemistry , nitrogen , zoology , agronomy , oryza sativa , pyrolysis , biology , biochemistry , organic chemistry , gene

Use efficiency of N fertilizers in lowland rice cultivation is very low. Biochar can be used to modify the N releasing rates of fertilizers and increase their efficiency. Maximum amount of urea that can be intercalated into biochar (BC) and the effects of biochar based slow-release urea fertilizer (SRF) on soil solution N contents and growth of rice (Oryza sativa) were investigated. Two feedstock materials (sawdust and tea waste) were slow pyrolysed at 500°C to produce BC and N were intercalated into BC using urea solutions with seven concentrations (U1=0%

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