Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2008.3261.326615N Derived from Rice Residues and Inorganic Fertilizers Incorporated in Soil Cultivated with Japanese and Egyptian Rice Cultivars]]>EbidA. UenoH. GhoneimA. AsagiN. 122008818The effect of a combination of inorganic fertilizer
and organic inputs on nitrogen uptake and utilization efficiency was compared
with that of only inorganic fertilizer. The treatments involved the addition
of equivalent amounts of N (80 kg N ha-1) through inorganic
fertilizer or three organic inputs (rice straw, rice root, or rice hull),
in addition to a control treatment for rice (Oryza sativa L.) cultivars
Koshihikari and Sakha 102. Rice straw was applied at two rates that corresponded
to 5 and 10 Mg ha-1, the application rate of rice hull was
5 Mg ha-1 and rice root was 2.5 Mg ha-1. The rates
of N utilization efficiency after 100th days after transplanting with
5 Mg ha-1 rice straw were relatively higher and ranged from
18.5 to 20.5%, while that with 10 Mg ha-1 ranged from 14.6
to 15.6%. The results show that a combination of inorganic fertilizers
and rice straw enhanced N utilization efficiency. It is suggested that
rice straw integrated with 40 kg N ha-1 of inorganic fertilizers
and applied at a suitable time had a positive effect on N uptake derived
from rice straw, whereas higher rates of rice straw application had an
adverse affect on N uptake by the rice crop.]]>Bird, J.A., W.R. Horwath, A.J. Eagle and C. Van Kessel,20016511431152Eagle, A.J., J.A. Bird, J.E. Hill, W.R. Horwarth and C. van Kessel,20019313461354Ebid, A., H. Ueno, A. Ghoneim and N. Asagi,200713C and 15N dual-labeled maize residues compost.]]>17583Ebid, A., H. Ueno, A. Ghoneim and N. Asagi,2008304241248Hansen, S., H.F. Alrøe and E.S. Kristensen,2001831126Huang, Z.W. and F.E. Broadbent,198918213220Kimura, M., J. Murase and Y. Lu,20042 and CH4).]]>3613991416Powlson, D.S., P.C. Brooks and B.T. Christensen,198719159164Rao, D.N. and D.S. Mikkelsen,197668752755Takahashi, S., S. Uenosono and S. Ono,2003251291301Tester, C.F.,1989148452458Tian, G., B.T. Kang and L. Brussaard,19922410511060Ueno, H. and S. Yamamuro,200115N-labeled plant residues and composts in rice-planted paddy soil.]]>47747754Wang, W.J., J.A. Baldock, R.C. Dalal and P.W. Moody,20043620452058Witt, C., K.G. Cassman, D.C. Olk, U. Biker and S.P. Liboon et al.,2000225263278