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020 _a92-9146-065-6
040 _aMX-TxCIM
072 0 _aF07
072 0 _aH60
082 0 4 _a633.15
_bEAS No. 6
100 1 _aTwomlow, S.J.
_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 _aTillage and weed control interactions on a semi-arid granitic catena. I. Maize yield responses
260 _aAddis Ababa (Ethiopia)
_bCIMMYT|EARO :
_c1999
300 _ap. 314-317
340 _aPrinted
520 _aSince 1990, farmers and research and extension in Masvingo have been developing and testing conservation tillage practices that conserve soil moisture, reduce draught animal power inputs, encourage timely crop establishment and weed control, and take into account the resourcefulness of smallholder farmers. In this, the first of three papers we discuss Maize (Zea mays) yield responses to crop establishment and weed control methods selected by participating farmers over three seasons on a semi-arid granitic catena. The second and third papers address the weeding and socio-economic issues. Maize grain yields were highest on Vlei margin soils in the wet 1995/96 season, Toplands in the wet 1996/97 and Vleis in the dry 1997/98 season. In 1995/96 and 1996/97 seasons the best planting and weeding combinations on Topland and Vlei- margin soils was planting in a rip line followed by overall hand weeding. The best combination in the Vleis was traditional third furrow planting, dropping seed behind the ox-plough, followed by either ox- cultivating, or post plant tie-ridging with an ox-plough and in-row hand weeding. In the drier 1997/98 open plough furrow planting followed by weeding by hand or the ox-plough yielded the best on all soil types.
546 _aEnglish
591 _a0103|AL-Maize Program|AGRIS 0102|AJ
595 _aCPC
650 1 0 _acontrol methods
650 1 7 _aCropping systems
_gAGROVOC
_2
_91068
650 1 0 _aFarm management
650 1 0 _aFarmers
_gAGROVOC
_91654
650 1 7 _aMaize
_gAGROVOC
_2
_91173
650 1 0 _aSemiarid climate
650 1 0 _aSemiarid zones
650 1 7 _aWeed control
_gAGROVOC
_2
_91308
650 1 0 _aWeeds
_91309
650 1 0 _aZimbabwe
653 0 _aCIMMYT
650 1 0 _91314
_aZea mays
_gAGROVOC
650 1 0 _91832
_aTillage
_gAGROVOC
650 1 0 _91313
_aYields
_gAGROVOC
700 1 _aCIMMYT
700 1 _aDhliwayo, H.,
_ecoaut.
700 1 _aRiches, Ch.,
_ecoaut.
700 1 _aRufu, N.,
_ecoaut.
700 1 _aZvarevashe, V.,
_ecoaut.
942 _cPRO
999 _c10051
_d10051