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

345Table 3. Component crops in maize-based mixtures in four ruralcommunities in the Sudan savanna ecology of Nigeria.Shaiskawa Baude Banigahannu ZurmiSorghumCottonGroundnutMilletCowpeaKenafMelonMaizeEgg plantSorghumGroundnutMilletCowpeaCottonMelonMaizeEgg plantmodel to identify determinants of relative distances of farm plots andcrop enterprise combinations for maize varieties introduced into thenew locations (Manyong et al. 1998; Onyibe et al. 2003b).The empirical analysis adopted the following linear regressionmodels of relative farm plot distances and enterprise combination:Y rfpd= β o+β 1Age + β 2YrsCMaz+ β 3NoFP+ NoMazF + β 4ETAF+ β 5Ymaz+ β 6YOC + β 7Pmaz + β 8POFG + β 9NoMazFr + β 10NDFR+ β 11CptProb+ β 12NoEAV+ β 13Prfer + β 14NOfS+ β 15PrMazS + β 16Edu + β 17FmlySi +β 18Nokid + ε ---------------------------------------------(a)Y cc= β o+ β 1Age + β 2YrsCMaz + β 3NoFP + NoMazF + β 4ETAF+ β 5Ymaz+ β 6YOC + β 7Pmaz + β 8POFG + β 9NoMazFr + β 10NDFR + β 11CptProb+ β 12NoEAV + β 13Prfer + β 14NofS + β 15PrMazS + β 16Edu + β 17FmlySi +β 18Nokid + ε ------------------------------------------- (b)In these models, Y rfpd= relative farm plot distance, Y cc= number ofcrops in an enterprise, β o= intercept, β 1, β , …….., β are regression2 18coeffi cients and ε = error term.The inclusion of these variables was based on their signifi cancein previous studies by Onyibe et al. (1999 and 2003a,b) in theSudan savanna and confi rmed during the FGD in this study. It washypothesized that the enterprise combinations and spatial distributionof maize-based enterprise farms would provide indications of the levelof adoption of maize cultivation at locations in which maize cultivationwas recently introduced.Results and DiscussionSorghumMilletCottonCowpeaGroundnutPotatoKenafMaizeRoselleEgg plantMilletCowpeaSorghumMaizeMelonCrops cultivated and cropping patternTable 3 shows the range of crops cultivated at the four locations. Asmany as ten, nine, eight and fi ve crops were cultivated, mostly inmixtures, at Banigahannu, Shaiskawa, Baude and Zurmi, respectively.