| 000 | 03475nab a22004337a 4500 | ||
|---|---|---|---|
| 001 | G93723 | ||
| 003 | MX-TxCIM | ||
| 005 | 20230731215647.0 | ||
| 008 | 210714s2009 ne |||p|op||| 00| 0 eng d | ||
| 022 | _a0334-5114 | ||
| 022 | _a1878-7665 (Online) | ||
| 024 | 8 | _ahttps://doi.org/10.1007/BF03179987 | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 090 | _aCIS-5853 | ||
| 100 | 1 |
_aNezomba, H. _915857 |
|
| 245 | 1 | 0 | _aIndigenous legumes biomass quality and influence on C and N mineralization under indigenous legume fallow systems |
| 260 |
_aNetherlands : _bSpringer, _c2009. |
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| 500 | _aPeer review | ||
| 500 | _aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0334-5114 | ||
| 520 | _aNon-cultivated N2-fixing indigenous legumes can be harnessed to enhance soil fertility replenishment of smallholder farms. Understanding N release patterns of biomass generated by such legumes is key in managing N availability to crops. Nitrogen and C mineralization patterns of indigenous legume species, mainly ofTephrosia andCrotalaria genera, and of soils sampled at termination of 1- and 2-year indigenous legume fallows (indifallows)were investigated in leaching tube incubations under laboratory conditions. With the exception ofTephrosia longipes Meisn (2.4%) andCrotalaria cylindrostachys Welw.ex Baker (1.8%), all indigenous legumes had >2.5% N. Total polyphenols and lignin were <4% and 15%, respectively, for all species.Crotalaria pallida (L.) andEriosema ellipticum Welw.ex Baker mineralized >50% of the added N in the first 30 days of incubation. Similar to mixed plant biomass from natural weed fallow,C. Cylindrostachys immobilized N during the 155-day incubation period. Indifallow fallow biomass reached peak N mineralization 55 days after most legumes had leveled off. Carbon release by legume species closely followedN release patterns,with mostCrotalaria species releasing >500 mg CO2-C kg−1 soil. Soils sampled at termination of fallows reached peak N mineralization in the first 21 days of incubation, with indifallows mineralizing significantly (P<0.05) more N than natural fallows. Application of mineral P fertilizer to indifallows and natural fallows increased C and N mineralization relative to control treatments. It was concluded that (i) indigenous legumes generate biomass of high quality within a single growing season, (ii) the slow N release of biomass generated under indifallow systems suggests that such fallows can potentially be manipulated to enhance N availability to crops, and (iii) N and C mineralization of organic materials in sandy soils is likely controlled by availability of P to the soil microbial pool. | ||
| 536 | _aConservation Agriculture Program | ||
| 546 | _aText in English | ||
| 594 | _aINT2737 | ||
| 650 | 7 |
_aLegumes _2AGROVOC _91963 |
|
| 650 | 7 |
_aNative organisms _2AGROVOC _911541 |
|
| 650 | 7 |
_aNitrogen _2AGROVOC _92912 |
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| 650 | 7 |
_aMineralization _2AGROVOC _912097 |
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| 650 | 7 |
_aLignins _2AGROVOC _910670 |
|
| 650 | 7 |
_aSmallholders _2AGROVOC _91763 |
|
| 650 | 7 |
_aFallow _2AGROVOC _92594 |
|
| 650 | 7 |
_aPhosphorus _2AGROVOC _95314 |
|
| 700 | 1 |
_aTauro, T.P. _915856 |
|
| 700 | 1 |
_aMtambanengwe, F. _915811 |
|
| 700 | 1 |
_aMapfumo, P. _93354 |
|
| 773 | 0 |
_tSymbiosis _gv. 48, no. 1-3, p. 78-91 _dNetherlands : Springer, 2009. _x0334-5114 |
|
| 856 | 4 |
_yAccess only for CIMMYT Staff _uhttps://hdl.handle.net/20.500.12665/182 |
|
| 942 |
_cJA _2ddc _n0 |
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| 999 |
_c27951 _d27951 |
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