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

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Uyovbisere, E.O., K.A. Elemo, and B.D. Tarfa, 1999. Effect of foliage oflocust bean and neem on soil fertility and productivity of early maize ina savannah Alfi sol. Pp 185–194 In: B. Badu-Apraku, M.A.B. Fakorede,M. Ouedraogo, and R.J. Carsky (eds.) Impact, challenges and prospects ofmaize research and development in West and Central Africa. WorkshopProceedings of a Regional Maize Workshop, May 1997, IITA-Cotonou,Benin Republic. WECAMAN/IITA, Ibadan, Nigeria.Vanlauwe, B. and N. Sanginga, 2004. The multiple roles of organic resourcesin implementing integrated soil fertility management strategies. In: R.J.Delve and M.E. Probert (eds.) Modelling nutrient management in tropicalcropping systems. ACIAR Proceedings 114: 12–24. Canberra, Australia.137
138Residual benefits of soybean genotypes andnatural fallow to subsequent maize in thenorthern Guinea savanna of NigeriaA.A. Yusuf 1 , E.N.O. Iwuafor 1 , O.O. Olufajo 2 , R. Abaidoo 3 and N. Sanginga 41Soil Science Department, Faculty of Agriculture/Institute for Agricultural Research,Ahmadu Bello University, Zaria, Nigeria.2Agronomy Department, Institute for Agricultural Research, Ahmadu Bello University,Zaria, Nigeria.3IITA, Ibadan, Nigeria.4TSBF-CIAT, Nairobi, Kenya.AbstractGenotypic variations have been shown to exist in residual benefi ts ofpromiscuous lines of soybean [Glycine max (L.) Merr.] to subsequentmaize (Zea mays L.) crop. The knowledge of combined effects ofcrop rotation and fertilization on soil properties and grain yield isthe key to sustainable crop production. Soil properties and grainyield were evaluated where different crop rotations were used. Twopromiscuous, improved soybean lines (TGx 1448-2E and Samsoy-2), natural fallow, and a maize hybrid (Oba Super 2) were grown in2003 and followed by a test crop of maize in 2004 with and withoutfertilizer (0 and 90 kg N ha -1 ) application. Rotation and N fertilizersignifi cantly (P
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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
Page 107 and 108: 86interest, including early, medium
Page 109 and 110: 88IntroductionThe multi-environment
Page 111 and 112: 90Table 1: Sums of squares (SS) exp
Page 113 and 114: 922Table 3: Average proportion of t
Page 115 and 116: 94genotypes within the target sets.
Page 117 and 118: 96residual interaction matrix has b
Page 119 and 120: 98Effects of farmers’ seed source
Page 121 and 122: 100known. The objective of this stu
Page 123 and 124: 102AFigure 1. (A) Percentage seeds
Page 125 and 126: 104zFigure 5. Mean days to 50% silk
Page 127 and 128: 106ReferenceAsiedu, E.A., Twumasi-A
Page 129 and 130: 108Mexique et les USA. Dans les ann
Page 131 and 132: 110In collaboration with the Intern
Page 133 and 134: 112to farmers. Recommendations had
Page 135 and 136: 114maize, the highest grain yield a
Page 137 and 138: 116Figure 1. Trend of land area cul
Page 139 and 140: 118ConclusionIn conclusion, the Ins
Page 141 and 142: 120Valencia, J.A. and S.A. Breth. u
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Page 145 and 146: 124chimique. L’effet relatif de l
Page 147 and 148: 126Figure 1: Rainfall pattern in Sa
Page 149 and 150: 128Percentage PercentageFigure 2: M
Page 151 and 152: 130Table 2. Effect of organic mater
Page 153 and 154: 132Yield increase and relative yiel
Page 155 and 156: 134Table 5. Relative grain and stov
Page 157: 136Dudal, R., 2002. Forty years of
Page 161 and 162: 140The cultivation of leguminous cr
Page 163 and 164: 142(IITA), natural fallow and a lat
Page 165 and 166: 144on exchangeable Ca, exchangeable
Page 167 and 168: 146Table 4. Rotation† and fertili
Page 173 and 174: 152in the top 0-15 cm layer and als
Page 175 and 176: 154inoculation and nitrogen fertili
Page 177 and 178: 156RésuméLes besoins du maïs en
Page 179 and 180: 158Table 1. Monthly distribution an
Page 181 and 182: 160was applied about 5 cm deep, mad
Page 183 and 184: 162Table 3. Effects of legumes and
Page 185 and 186: 164Figure 3: Grain yield of maize a
Page 187 and 188: 166ConclusionFrom the results of th
Page 189 and 190: 168Tarawali, G., 1991. The residual
Page 191 and 192: 170la variété de maïs tolérant
Page 193 and 194: 172It is necessary to validate that
Page 195 and 196: 174Table 2. Effects of previous cro
Page 197 and 198: 176of cowpea, than in the farmers
Page 199 and 200: 178AcknowledgementsThe authors than
Page 201 and 202: 180Potential of drought-tolerant ma
Page 203 and 204: 182potential in comparison to the t
Page 205 and 206: 184ha -1 . Fields were planted on J
Page 207 and 208: 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/
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376- Au niveau des tests associatio
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378à base de maïs dans le Nord de
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380Two States (Kaduna and Katsina),
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382Table 1. Percentage of farm hous
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384Table 3. Socio-economic factors
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386AcknowledgementThe authors are g
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388Unexploited yield and profitabil
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390and input combinations. A number
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392The production function in equat
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394host of socio-economic and insti
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396Table 3. Frequency distribution
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398The adjusted R-squared value and
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400Assefa, A., 1995. Analysis of pr
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402Socio-economics of community-bas
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404seed at affordable price to farm
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406Table 1. Socio-economic profiles
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408Table 3. Average labor costs and
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410ReferencesAhmed, B., 1994. Econo
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412communautaire de semences de ma
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414producing QPM seed at the commun
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416Table 1. Cost elements (N/ha) in
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418Table 3. Gross income (N/ha) fro
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420Conclusion and RecommendationsTh
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422Effets de la rotation et de l’
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424Tableau 1. Caractéristiques phy
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426Tableau 3. Composition chimique
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428Figure 1. Evolution des rendemen
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430Maïs-grain (kg.ha -1 )Maïs-gra
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432Tableau 9. Successions culturale
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434Maïs-grain (kg.ha -1 )350030002
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436
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438
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440ont été analysés pour leur co
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442A=(M’-M) x 100/M + A o(1)where
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444Table 1. Physicochemical composi
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446Table 2. Steeping time and varie
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448germination. In general, the pea
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450after cooking of maize malted fl
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452Marero, L. M., E.M. Payuma, A.R.
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454Effects of wheat flour replaceme
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456considerably and this is attribu
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458resulting products (fl ours, dou
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460Table 1. Physico-chemical proper
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462CMS 8806 CMS 8704CMS 9015 CMS 85
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46439.8We ight(g)39.639.439.2390%10
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466He, H. and R.C. Hoseney, 1991. D
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468Adaptation et utilisation de var
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470Figure 1. Distribution mensuelle
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472chaque semaine. L’essai a dur
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474Resultats et DiscussionsTests ag
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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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