000			03772nam a22004217a 4500
001			G64963
003			MX-TxCIM
005			20240919021110.0
008			121211s ||||f| 0 p|p||0|| |
020			_a92-9146-025-7
040			_aMX-TxCIM
072		0	_aF01
072		0	_aF30
082	0	4	_a633.15 _bEAS No. 5
100	1		_aSitch, L. _uMaize Productivity Gains through Research and Technology Dissemination. Proceedings of the Eastern and Southern Africa Regional Maize Conference, 5; Arusha (Tanzania); 3-7 Jun 1996
110	2		_aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
245	0	0	_aMulti-location testing of improved varieties of maize on farmers fields in Northern and Central Mozambique
260			_aAddis Ababa (Ethiopia) _bCIMMYT : _c1997
340			_aPrinted
520			_aThe yields of maize on family sector farms in Mozambique are often limited because farmers do not have seed of improved varieties. To address this problem, World Vision International - Mozambique commenced a multilocation trials program to evaluate available varieties of the principle crops grown by the family sector. This paper examines the results of the on-farm trials carried out as part of this evaluation process and the extent and nature of the variety by locality interaction. The variance due to variety by locality interactions is of similar magnitude to the variety variance. A hybrid variety was found to be highest yielding overall, followed by the two improved open-pollinated varieties Matuba and Manica. The results also indicated that the two open-pollinated varieties could be distributed to different localities as their relative performance varied across locations. However, the performance of these two varieties was superior to the regional variety in most farmers' fields. There appeared to be some similarities in the way localities discriminated among varieties on the basis of agroecological zone, but there was no consistency in this. A second set of experiments was designed to evaluate different management techniques and to demonstrate these techniques to farmers. The following recommendations are made with regard to the management of farmers' fields on the basis of the results of the 1994/95 rainy season's on-farm trials: weeding one time during the season (15 days after emergence); measures to control stem borer in maize are only necessary when pest incidence is high; seeding rates of four or five seeds per hill without thinning (farmer practice) will produce reliable yields under most conditions, with the exception of those locations where rainfall is high and the growing season is long - under these conditions a seeding rate of four seeds per hill thinned to two plants per hill is recommended; if farmers have access to and can afford fertilizer then an application of 25 kg/ha of both nitrogen and phosphorus will ensure a positive yield response. There is some locality by treatment interaction and therefore some slight adjustments in recommendations may have to be made in some localities. However. there was little to no treatment by variety interaction
546			_aEnglish
591			_a9712|AGRIS 9702
593			_aJose Juan Caballero
595			_aCPC
650	1	0	_aMozambique
650	1	0	_aPlant production _91212
650	1	0	_aTesting
650	1	7	_aVarieties _gAGROVOC _2 _91303
653	0		_aCIMMYT
650	1	0	_91314 _aZea mays _gAGROVOC
650	1	0	_91151 _aHybrids _gAGROVOC
650	1	7	_aPlant breeding _gAGROVOC _2 _91203
700	1		_aBias, C., _ecoaut.
700	1		_aHenderson, S.A., _ecoaut.
700	1		_aRansom, J.K.|Palmer, A.F.E.|Zambezi, B.T.|Mduruma, Z.O.|Waddington, S.R.|Pixley, K.V.|Jewell, D.C. _eeds.
700	1		_aWhite, J., _ecoaut.
942			_cPRO
999			_c9490 _d9490