Burned fields receiving 30 kg/ha yielded the same amount as incorporated fields receiving no fertilizer N. This suggests that straw incorporation is equivalent to adding 30 kg/ha of fertilizer N (Horwath and van Kessel, 1998).

Literature Cited
Horwath, W.R. and C. van Kessel. 1998. Reassessing soil N availability and fertilizer recommendations under alternative rice residue management practices. Annual Report, Comprehensive Rice Research 1998, University of California and U.S. Department of Agriculture.

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