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| 008 | 101222s2004 ua ss b eng d | ||
| 040 | _aEAL | ||
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_aeng _bara |
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| 090 | _aART ZJAR V31 No3 9 | ||
| 100 | 1 | _aEL-Sherbieny, A. E. A. | |
| 240 | 1 | 0 |
_aZagazig journal of agricultural research, 2004 v. 31 (3) _h[electronic resource]. |
| 245 | 1 | 0 |
_aSoil nitrogen mineralization and microbial biomass formation in sandy soil amended with labelled leguminous and non-leguminous plant residues _h[electronic resource]. |
| 246 | 1 | 5 | _aمعدنة نيتروجين التربة وتكون الكتلة الميكروبية الحيه فى الأراضى الرملية ببقايه النباتات البقولية والغير بقولية والمرقمة بالنيتروجين-15. |
| 300 | _ap.973-991. | ||
| 504 | _aIncludes references. | ||
| 520 | _aA lab experiment was conducted to evaluate the effect of different plant residues having varying (C/l'Iil ratios and nitrogen content. Both types of ¹⁵N-labelled plant residues were mixed with a sandy soil and incubated under different rates (0, 50 and 100 mg N Kg⁻¹ soil) at about 22°C for about 10 weeks in a laboratory under aerobic conditions. Results showed that the organic C and CIN ratios decreased with time up to 10 weeks period of incubation at the rate of 50 and 100 mg N Kg⁻¹ soil added as plant residues. but N content increased at any given time until the end of incubation, being followed the order: Soybean> (Wh + Soy) > wheat residues. In general, data showed that the amount of biomass-N gradually increased up to 4 weeks and thereafter, slightly decreased for wheat residues at 50, 100 mg N Kg⁻¹ soil until the end of incubation period. However, the values of biomass-N was as low as 9.44 and 21.85 to as high as 21.22 and 32.27 mg N Kg⁻¹ soil for wheat and soybean residues-treated soil at 50 and 100 mg N Kg-1 soil, respectively. Using ¹⁵N_ technique results indicated that the of ¹⁵N_ mineralization percent for soybean increased overtime-N (narrow CIN ratio) being more effective and sUEerior compared to wheat residue-N (wide CIN ratio) on the net of ¹⁵N-mineralization through out the time of incubation. | ||
| 546 | _aSummary in Arabic. | ||
| 650 | 0 |
_aSoils _xNitrogen content _xMeasurement. |
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| 650 | 0 | _aSoil microbiology. | |
| 700 | 1 | _aAwad, E. A. M. | |
| 700 | 1 | _aSoliman, S. M. | |
| 700 | 1 | _aIsmail, M. M. | |
| 773 | 0 |
_tZagazig Journal of Agricultural Research. _g2004.v.31(3) _x1110-0338 _7nnas _wu158356 |
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| 856 | 4 | 0 |
_uhttp://nile.enal.sci.eg/EALE/2004/ZJAR/3104/3/973.pdf _zFull Text Article. |
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