000			04179nab a22004697a 4500
001			G90271
003			MX-TxCIM
005			20240919020946.0
008			210713s2008 ne |||p|op||| 00| 0 eng d
022			_a0929-1393
024	8		_ahttps://doi.org/10.1016/j.apsoil.2007.10.009
040			_aMX-TxCIM
041			_aeng
090			_aCIS-5183
100	1		_aGovaerts, B. _gSustainable Intensification Program _gIntegrated Development Program _gDG's Office _8INT2813 _9860
245	1	0	_aLong-term consequences of tillage, residue management, and crop rotation on selected soil micro-flora groups in the subtropical highlands
260			_aAmsterdam (Netherlands) : _bElsevier, _c2008.
340			_aComputer File|Printed
500			_aPeer review
500			_aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0929-1393
520			_aDensely populated and intensively cropped, the subtropical highlands of the world have agricultural sustainability problems resulting from soil erosion and fertility decline. In 1991, the International Maize andWheat Improvement Center (CIMMYT) initiated a long-termfield experiment at itssemi-arid highlandexperiment stationinMexico (2,240masl; 19.318 N, 98.508 W; Cumulic Phaeozem) to investigate the enduring effects of tillage/seeding practices, crop rotations, and crop residue management on the performance of maize and wheat grown under rainfed conditions. The aim was to identify practices that would promote high, sustainable maize and wheat yields in the target environment. A better understanding of soil ecology could lead tomore precise management of soil organisms for beneficial purposes in agriculture. The effect of alternative agriculture technologies on total bacteria, fluorescent Pseudomonas, Actinomycetes, total fungi, and Fusarium spp. were investigated. Residue retention induced higher population counts of total bacteria, fluorescent Pseudomonas, and Actinomycetes compared to residue removal under zero tillage and conventional tillage. The principal component analysis clustered the wheat treatments into three groups. Zero and conventional tillage with residue retention showed increased populations of total bacteria, fluorescent Pseudomonas, and Actinomycetes. Zero tillage without residue retention resulted in very low populations of micro-flora, while conventional tillage with residue removal resulted in the predominance of total fungi. For maize, the PCA biplot featured the same three clusters of treatments as for wheat. However, in contrast to wheat, maize under conventional tillage with residue removal induced reduced populations. These results, combined with earlier findings on soil quality, root rot, nematode populations, and yield, indicate that zero tillage with residue removal is clearly an unsustainable practice; zero tillage should therefore be combined with an adequate level of residue retention. Zero tillage with residue retention is a viable sustainable practice for smallholder farmers in the volcanic highlands of Mexico and comparable regions of the world
536			_aConservation Agriculture Program|Genetic Resources Program
546			_aText in English
591			_aElsevier
594			_aINT2813|CCJL01|CSAY01|INT2602
650		7	_aConservation agriculture _2AGROVOC _92619
650		7	_aTillage _2AGROVOC _91832
650		7	_91807 _aCrop rotation _2AGROVOC
650		7	_914313 _aAgricultural waste management _2AGROVOC
650		7	_97739 _aSoil microorganisms _2AGROVOC
700	1		_9845 _aMezzalama, M. _gGenetic Resources Program _8INT2602
700	1		_94612 _aSayre, K.D. _gSustainable Intensification Program _8CSAY01
700	1		_aCrossa, J. _gGenetic Resources Program _8CCJL01 _959
700	1		_915819 _aLichter, K.
700	1		_921174 _aTroch, V.
700	1		_915825 _aVanherck, K.
700	1		_915817 _aDe Corte, P.
700	1		_965 _aDeckers, J.
773	0		_tApplied Soil Ecology _n635035 _gv. 38, no. 3, p. 197-210 _dAmsterdam (Netherlands) : Elsevier, 2008. _w56850 _x0929-1393
856	4		_yAccess only for CIMMYT Staff _uhttps://hdl.handle.net/20.500.12665/88
942			_cJA _2ddc _n0
999			_c26948 _d26948