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003 MX-TxCIM
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020 _a92-9146-065-6
040 _aMX-TxCIM
072 0 _aF01
072 0 _aF04
082 0 4 _a633.15
_bEAS No. 6
100 1 _aKabambe, V. H.
_uMaize Production Technology for the Future: Challenges and Opportunities. Proceedings of the Eastern and Southern Africa Regional Maize Conference, 6; Addis Ababa (Ethiopia); 21-25 Sep 1998
110 2 _aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
245 0 0 _aThe effects of time of applying basal dressing fertilizers on maize yield under varying rainfall regimes and inherent soil fertility in Malawi
260 _aAddis Ababa (Ethiopia)
_bCIMMYT|EARO :
_c1999
300 _ap. 290-292
340 _aPrinted
520 _aDue to widespread delays in basal dressing fertilizer application in Malawi, a trial was conducted in 1990/91 and 1991/92 seasons at 3 sites to determine maize yield response to delayed applications of basal fertilizers and split applications. A 50:30:0 kg ha-1 N:P2O5:K fertilizer package (from diammonium phosphate and urea) was applied once at 0, 2,3 and 4 weeks after planting (WAP), and compared to no fertilizer application and split application. There were significant yield reponses to fertilizer application at all sites in 1990/91 and at Mbawa only in 1991/92. Yield losses of up to 1000 kg ha-1 (25-74%) were recorded at Mbawa and Chitedze in 1990/91 and at drought stricken Chitedze in 1991/92, where grain yields without fertilizer were less than 2000 kg ha-1, due to delaying the application.of basal fertilizers by 2-4 weeks. Split applications produced similar yield to basal dressing at 0 WAE. At Meru in both seasons and Mbawa in 1991/92, where yield of maize without fertilizer was over 3t ha-1, there was no yield loss due to delayed basal fertilizer application. Split application significantly increased yield over single basal dressing at 0 WAE at Meru in 1990/91. Nitrogen use efficiency factors were generally higher in high yield potential sites. The results indicate potential to increase maize yield and optimise labour in Malawi by applying basal fertilizers at planting or soon after maize emergence, especially on depleted soils and under low and erratic rainfall conditions.
546 _aEnglish
591 _a0103|AL-Maize Program|AGRIS 0102|AJ
595 _aCPC
650 1 7 _aCrop management
_gAGROVOC
_2
_91061
650 1 0 _aDressing percentage
650 1 0 _aFertilizer application
_91110
650 1 7 _aMaize
_gAGROVOC
_2
_91173
650 1 0 _aMalawi
650 1 0 _91234
_aRain
_gAGROVOC
650 1 0 _aYield increases
653 0 _aCIMMYT
650 1 0 _91314
_aZea mays
_gAGROVOC
650 1 0 _91952
_aSoil fertility
_gAGROVOC
650 1 0 _91190
_aNitrogen fertilizers
_gAGROVOC
700 1 _aCIMMYT
700 1 _aGanunga, R.P.,
_ecoaut.
700 1 _aKumwenda, J.D.T.,
_ecoaut.
700 1 _aSakala, W.D.,
_ecoaut.
942 _cPRO
999 _c10044
_d10044