Demand-Driven Technologies for Sustainable Maize ... - IITA

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427Tableau 5. Succession des cultures au cours des quatre annéesd’expérimentation. Site de Sidéradougou.Traitement Année 2001 Année 2002 Année 2003 Année 2004T1 maïs maïs maïs maïsT2 maïs +BP maïs maïs maïsT3 PA PA+maïs maïs maïsT4 PA + BP PA+maïs maïs maïsLorsqu’il s’agit d’une culture pure de pois d’angole, il n’ y a pasd’apport d’engrais. Toutefois l’essai de Farako Ba avait reçu en premièreannée une application uni<strong>for</strong>me de NPK à la dose 100 kg.ha -1 comptetenu du très faible développement des plantes en relation avec lefaible niveau de fertilité du sol de l’essai.Site de Sidéradougou : le dispositif expérimental comprend quatretraitements en cinq répétitions. Les quatre traitements résultent d’unecombinaison factorielle comportant deux niveaux pour chaque facteur(Tableau 5) :– Présence ou absence de pois d’angole dans le système de culture– Avec ou sans apport de Burkina phosphate (400 kg.ha -1 ). Lesparcelles élémentaires mesurent 72 m².Analyse de solUn prélèvement de sol a été réalisé en janvier 2005 sur l’horizon0-20 cm de l’essai de Farako Ba pour des analyses de carbone et dephosphore total. L’analyse a été faite au laboratoire de la station deKamboinsé de l’INERA.Analyse statistique des donnéesL’analyse de variance des résultats a été réalisée avec le logicielGENSTAT 5.32.Résultats et DiscussionsEssai de Farako BaEvolution des rendements en fonction de l’âge de mise en culture. LaFigure 1 et tableau 6 montre l’évolution des rendements en maïs-grainde 2000 à 2004 sur le témoin qui est une culture continue de maïs.Le premier constat que l’on peut faire c’est que le rendementobtenu en première année est tout de même bas malgré unepluviométrie acceptable (moyenne de l’année : 1073.5 mm) : 1684kg.ha -1 . Ce rendement est en deçà des rendements potentiels de lavariété SR21. Le bas niveau de rendement obtenu peut être attribuéau bas niveau de fertilité de ce sol plusieurs fois exploité dans le cadre
428Figure 1. Evolution des rendements du maïs-grain de 2000 à 2004 enculture continue de maïs à la station de Farako Ba.Tableau 6. Evolution des rendements du maïs-grain en culture continuede maïs. Site de Farako Ba.Année Grain (kg,ha -1 )2000 16842001 10932002 6352003 1792004 517F 51.63Probabilité
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iDemand-Driven Technologies forSust
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iiiContentsPrefacePréfaceForewordA
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vAssessment of Striga infestation i
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viiPrefaceThe West and Central Afri
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ixendosperm maize varieties, 95 TZE
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Les agriculteurs de la savane guin
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xiiiForewordMaize (Zea mays L) is o
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xvAvant proposLe maïs (Zea mays L)
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xviiFifth Biennial West and Central
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xixNigeria26 Abdullahi, Y.M. NAERLS
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1Section1Breeding, SeedSystems and
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4skills of the scientists and impro
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6collaborating scientists. This is
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8fi ndings to their peers. They are
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10Figure 3. Funds received by indiv
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12Percentage PercentageYearFigure 5
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14Figure 9. Coefficient of variatio
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16Figure 15. Total maize grain prod
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18Table 2. Capacity Building of NAR
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20DiscussionResults of the analyses
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22the Lead Country Concept was not
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24Badu-Apraku, B., M.A.B. Fakorede,
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26et des lignées dotées de résis
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28Overview of the strategy for deve
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30Table 1. Characteristics of extra
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32Table 2. Performance of extra-ear
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34Table 3. cont’dInbredlineParent
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36different germplasm and for placi
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38Figure 1. Clustering of 35 extra-
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40Table 4. Number of inbred lines i
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42M’Boob, S.S., 1986. A regional
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44sur la performance de leurs hybri
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46Table 1. Mean grain yield (Mg ha
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48Table 2. Means for grain yield an
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50Table 4. Estimates of GCA effects
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52employed to exploit non-additive
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54deux traitements de sol (O, T). L
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56Table 1. Characteristic of 15 par
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58Table 4. Diallel analysis of vari
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60Table 6. Number of adapted x adap
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62ConclusionThe results of this stu
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64Combining ability of diverse maiz
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66S. hermonthica and S. asiatica. Y
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68Table 2.Mean squares of grain yie
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70Table 4. Mean squares of grain yi
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72Table 5. Estimates of general com
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74Table 7. Estimates of general com
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76yield under Striga infestation. T
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78Kim, S.K., V.O. Adetimirin and A.
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80Maize accounts for between 30 and
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82VII, XI and V that had grain yiel
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84Table 3. Inter- and intra-cluster
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86interest, including early, medium
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88IntroductionThe multi-environment
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90Table 1: Sums of squares (SS) exp
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922Table 3: Average proportion of t
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94genotypes within the target sets.
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96residual interaction matrix has b
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98Effects of farmers’ seed source
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100known. The objective of this stu
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102AFigure 1. (A) Percentage seeds
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104zFigure 5. Mean days to 50% silk
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106ReferenceAsiedu, E.A., Twumasi-A
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108Mexique et les USA. Dans les ann
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110In collaboration with the Intern
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112to farmers. Recommendations had
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114maize, the highest grain yield a
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116Figure 1. Trend of land area cul
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118ConclusionIn conclusion, the Ins
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120Valencia, J.A. and S.A. Breth. u
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122
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124chimique. L’effet relatif de l
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126Figure 1: Rainfall pattern in Sa
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128Percentage PercentageFigure 2: M
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130Table 2. Effect of organic mater
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132Yield increase and relative yiel
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134Table 5. Relative grain and stov
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136Dudal, R., 2002. Forty years of
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138Residual benefits of soybean gen
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140The cultivation of leguminous cr
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142(IITA), natural fallow and a lat
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144on exchangeable Ca, exchangeable
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146Table 4. Rotation† and fertili
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152in the top 0-15 cm layer and als
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154inoculation and nitrogen fertili
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156RésuméLes besoins du maïs en
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158Table 1. Monthly distribution an
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160was applied about 5 cm deep, mad
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162Table 3. Effects of legumes and
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164Figure 3: Grain yield of maize a
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166ConclusionFrom the results of th
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168Tarawali, G., 1991. The residual
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170la variété de maïs tolérant
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172It is necessary to validate that
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174Table 2. Effects of previous cro
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176of cowpea, than in the farmers
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178AcknowledgementsThe authors than
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180Potential of drought-tolerant ma
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182potential in comparison to the t
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184ha -1 . Fields were planted on J
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186Table 3. Means for days to silki
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188DiscussionThe observed effects o
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190the yield potential of the genot
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192Edmeades, G.O., J. Bolanos, M. H
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194Genotypic variation of soybean f
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1962002). Therefore, high BNF in so
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198Experimental layout, planting an
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200At 8 WAP, fi ve plants were rand
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202Figure 1. Relationships between
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204signifi cant correlation (P ≤
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206Table 4. Total N accumulation (k
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208Table 5. Total P in grain (kg ha
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210Table 6. Grain yield (kg ha -1 )
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212colonization in previous RP plot
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214(Table 8). However, within speci
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216maize-after-soybean plots over t
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218The observed trends in grain yie
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220in soybean than in maize grain d
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222IITA (International Institute of
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224Snedecor G.W., Cochran G. (1980)
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226irrigated conditions in the Sahe
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228Figure 1: Variation des tempéra
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230L’espérance de la matrice de
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232Tableau 3. Moyennes des caractè
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234Tableau 6. Table d’ANOVA du mo
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236Tableau 8. Table d’ANOVA du mo
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238seconde stratégie répond bien
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240
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242
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244RésuméDes enquêtes sur les ma
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246Field surveysField surveys were
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248Table 1.PathogensMean incidence
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250Table 3. Correlation matrix betw
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252Table 8. Correlation matrix betw
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254Signifi cant correlations were f
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256NCRE, 1994. Annual Report Camero
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258faibles réactions qui indiquent
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260(b) A no-choice situation. In th
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262Table 2. Ovipositional responses
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264Table 5. Larval feeding response
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266Figure 1. Profiles of colonizing
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268on moderately resistant and susc
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270CCE, (Commission des Communauté
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272RésuméLe Striga est une contra
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274the baseline for environmental m
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276Table 1. Percentage of crop and
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278(Emechebe et al. 1991) may have
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280ReferencesAnonymous, 1996. Stati
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282The use of spicy plant oils agai
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284The objectives of the present st
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286% mortality100908070605040302010
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288saturated atmosphere in the dark
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290(Gyllenhal) in stored chick-peas
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292intercropped with groundnut, and
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294du Striga. Les observations ont
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296Tableau 1. Incidence des plants
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298Tableau 4. Contd.LibellésUnité
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300soudure. Le traitement maïs ass
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302Herbicide resistant maize: a nov
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304Figure 1. Striga-prone areas in
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306developed herbicide resistant li
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308geo-referenced data from a farm-
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310Table 2: Grain yield and Striga
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312AcknowledgementsThis research wa
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314Effects of maize-cowpea intercro
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316In Cameroon, maize is commonly i
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318Table 1. Relative abundance and
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320Table 4. Maize stem borers’ st
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322were the predominant predator sp
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324on insect infestation and the as
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326Kareiva, P.M., 1983. Finding and
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328
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330impliquées dans la production d
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332Table 1: Scores assigned for fac
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334Table 2. Characteristics of wome
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336Table 5. Spearman rank correlati
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338farmers are given the appropriat
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340RésuméUne étude combinée de
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342ZamfaraStateKatsinaStateFigure 1
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344Table 1. Relative radii of the f
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346Table 4. Number of crops grown i
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348Figure 3: Concentric circles ref
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350No. Maize farmersFigure 4: Facto
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352Table 8. Trend of farmers rating
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354Gyasi, K.O, L.N. Abateisina, T.
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356Bénin. Seed quality was determi
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358Tableau 1. Moyenne des différen
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36070000Nombre de plants à I’hec
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362ISTA (International Seed Testing
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364Togolese Institute of Agricultur
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366variété améliorée et un tém
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368Tableau 2. Cycle des différente
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370Tableau 6. Rendement des variét
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372Tableau 7. Evolution des rendeme
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374300000250000Maïs Mais purMaïs/
Page 397 and 398: 376- Au niveau des tests associatio
Page 399 and 400: 378à base de maïs dans le Nord de
Page 401 and 402: 380Two States (Kaduna and Katsina),
Page 403 and 404: 382Table 1. Percentage of farm hous
Page 405 and 406: 384Table 3. Socio-economic factors
Page 407 and 408: 386AcknowledgementThe authors are g
Page 409 and 410: 388Unexploited yield and profitabil
Page 411 and 412: 390and input combinations. A number
Page 413 and 414: 392The production function in equat
Page 415 and 416: 394host of socio-economic and insti
Page 417 and 418: 396Table 3. Frequency distribution
Page 419 and 420: 398The adjusted R-squared value and
Page 421 and 422: 400Assefa, A., 1995. Analysis of pr
Page 423 and 424: 402Socio-economics of community-bas
Page 425 and 426: 404seed at affordable price to farm
Page 427 and 428: 406Table 1. Socio-economic profiles
Page 429 and 430: 408Table 3. Average labor costs and
Page 431 and 432: 410ReferencesAhmed, B., 1994. Econo
Page 433 and 434: 412communautaire de semences de ma
Page 435 and 436: 414producing QPM seed at the commun
Page 437 and 438: 416Table 1. Cost elements (N/ha) in
Page 439 and 440: 418Table 3. Gross income (N/ha) fro
Page 441 and 442: 420Conclusion and RecommendationsTh
Page 443 and 444: 422Effets de la rotation et de l’
Page 445 and 446: 424Tableau 1. Caractéristiques phy
Page 447: 426Tableau 3. Composition chimique
Page 451 and 452: 430Maïs-grain (kg.ha -1 )Maïs-gra
Page 453 and 454: 432Tableau 9. Successions culturale
Page 455 and 456: 434Maïs-grain (kg.ha -1 )350030002
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Page 461 and 462: 440ont été analysés pour leur co
Page 463 and 464: 442A=(M’-M) x 100/M + A o(1)where
Page 465 and 466: 444Table 1. Physicochemical composi
Page 467 and 468: 446Table 2. Steeping time and varie
Page 469 and 470: 448germination. In general, the pea
Page 471 and 472: 450after cooking of maize malted fl
Page 473 and 474: 452Marero, L. M., E.M. Payuma, A.R.
Page 475 and 476: 454Effects of wheat flour replaceme
Page 477 and 478: 456considerably and this is attribu
Page 479 and 480: 458resulting products (fl ours, dou
Page 481 and 482: 460Table 1. Physico-chemical proper
Page 483 and 484: 462CMS 8806 CMS 8704CMS 9015 CMS 85
Page 485 and 486: 46439.8We ight(g)39.639.439.2390%10
Page 487 and 488: 466He, H. and R.C. Hoseney, 1991. D
Page 489 and 490: 468Adaptation et utilisation de var
Page 491 and 492: 470Figure 1. Distribution mensuelle
Page 493 and 494: 472chaque semaine. L’essai a dur
Page 495 and 496: 474Resultats et DiscussionsTests ag
Page 497 and 498: 476Tableau 2. Proportions des ingr
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478Tableau 5. Composition de l’al
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480Tableau 7. Coûts financiers de
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482des demandeurs à payer et est d
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484ConclusionNotre étude montre qu
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486
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488
Page 511 and 512:
490Breeding, Seed Production and St
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4921. Propose approaches/innovation
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494identifi cation, planning and im
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496
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