000			02707nam a22004577a 4500
001			G80361
003			MX-TxCIM
005			20211006084754.0
008			121211s ||||f| 0 p|p||0|| |
020			_a970-648-120-6
040			_aMX-TxCIM
072		0	_aF01
072		0	_aP35
082	0	4	_a338.16 _bFRI
100	1		_aSmalberger, S. _uIntegrated Approaches to Higher Maize Productivity in the New Millennium
110	0		_aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) Kenya
111	2		_a7. Proceedings of the Eastern and Southern Africa Regional Maize Conference _cNairobi (Kenya) _d5-11 Feb 2002
245	0	0	_aIdentification of maize cultivars tolerant to low soil fertility in South Africa
260			_aNairobi (Kenya) _bKARI|CIMMYT : _c2002
300			_ap. 202-205
340			_aPrinted
520			_aIn Southern Africa maize is usually grown by resource-poor farmers under poor soil fertility conditions such as low N. low P and soil acidity. This leads to unstable maize production and thus to low income and food security. The aim of this project is to improve the livelihoods of resource-poor farmers through sustainable maize production. The objectives are: ( 1 ) Identification of test sites. (2) Identification of cultivars and genotypes that are tolerant to low soil fertilíty. (3) Identífication of the best 20 cultivars to he made available to other Southern African Developing countríes (SADC) countries and resource- poor farmers. During 1999/2000. materials from CIMMYT -Zimbabwe and the South African National Cultivar Trials ,were tested under low nítrogen conditions with good results. The low N trials were replicated ín three localities in South Afríca afterwards. A low phosphorus (P) and a high soil acid trial were also planted at Potchefstroom during 2000/2001 to identify tolerant genotypes. The yield ranged from 0.2 to 3.9 t ha-1 under low P conditions and from 0.5 to 2.1 t ha-1 under acid conditions. These results would raise yields and stabilize maize production. which will lead to food and income security for the resource poor farmer il1 South Africa.
546			_aEnglish
591			_a0410|AGRIS 0401|AL-Maize Program
593			_aJuan Carlos Mendieta
595			_aCPC
650	1	7	_aBreeding _gAGROVOC _2 _91029
650	1	0	_aLowland
650	1	7	_aMaize _gAGROVOC _2 _91173
650	1	0	_aNitrogen
650	1	0	_aPhosphorus
650	1	0	_aSouth Africa
653	0		_aCIMMYT
653	0		_aKARI
650	1	0	_91314 _aZea mays _gAGROVOC
650	1	0	_91952 _aSoil fertility _gAGROVOC
650	1	0	_91109 _aFarming systems _gAGROVOC
700	1		_aDu Toit, A.S., _ecoaut.
700	1		_aFriesen, D.K.|Palmer, A.F.E. _eeds.
942			_cBK
999			_c7372 _d7372