last final thesis of umer

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LIST OF TABLESTable 1.Description of the maize and cowpea varieties. .............................................................. 25Table 2.Treatment combinations. ................................................................................................. 26Table 3.Physio-chemical properties of the experimental site before planting. ............................. 34Table 4.Interaction effect of the intercropped cowpea varieties and plant populations on Totalnitrogen (%) after harvesting. ....................................................................................................... 35Table 5.Interaction effect of the intercropped cowpea varieties and plant populations on organicmatter content (%) after harvesting............................................................................................... 37Table 6.Effects of densities and varieties of cowpea on phenology of sole and intercroppedmaize. ............................................................................................................................................ 39Table 7.Growth parameters of maize as affected by varieties, population densities of componentcowpea and cropping system. ....................................................................................................... 41Table 8.Interaction effect of the intercropped cowpea varieties and plant populations on grainyield (kg ha -1 ) of maize. ................................................................................................................ 44Table 9.Effects of cowpea densities, varieties and cropping system on number of ears per plant(NEPP), Thousand kernel weight (TKW (g)), Dry above ground biomass (B (kgha -1 )), Harvestindex (HI (%) of sole and intercropped maize. ............................................................................. 45Table 10.Effects of densities and varieties of cowpea on phenology of sole and intercroppedcowpea with maize. ....................................................................................................................... 48Table 11.Interaction effect of the intercropped cowpea varieties and plant populations on heightof cowpea in maize/cowpea intercropping. .................................................................................. 50Table 12.Effects of component densities and varieties of cowpea on number of branches perplant (NBPP) and leaf area (LA) of sole and intercropped cowpea. ............................................ 52Table 13. Interaction effect of the intercropped cowpea varieties and plant populations on grainyield of cowpea in maize/cowpea intercropping. ......................................................................... 57Table 14.Effects of component densities and varieties of cowpea on number of pods per plant(NPPP), number of seed per pod (NSPP) ,aboveground dry biomass (AGBB) and harvest index(HI) of sole and intercropped cowpea. ......................................................................................... 59Table 15.Cowpea varieties, plant density and their interaction effects on total LER ofintercropped maize and cowpea. ................................................................................................... 60Table 16.Dominance analysis of the treatment combinations ...................................................... 61Table 17.The marginal rate of return of maize, cowpea varieties and plant density combinations........................................................................................................................................................ 62ix
LIST OF FIGURESFigure 1.Ethio-maize production .................................................................................................... 9Figure 2. Map of the study area, Jijiga, Ethiopia. ......................................................................... 23Figure 3. Rainfall pattern at Jijiga Station. (Devereux, 2006) ...................................................... 24x
Page 1 and 2: MEKELLE UNIVERSITYCoDANRYield and E
Page 3 and 4: ABSTRACTA field experiment was cond
Page 5 and 6: BIOGRAPHICAL SKETCHThe author, Omar
Page 7 and 8: TABLE OF CONTENTSDECLARATION.......
Page 9: 4.1.2 Soil analysis after Harvestin
Page 13 and 14: LIST OF ABBREVIATIONS AND ACRONYMSA
Page 15 and 16: Cowpea is tolerant to a wide range
Page 17 and 18: 1.3.2 Specific objectives1. To eval
Page 19 and 20: around the world are planted under
Page 21 and 22: 2.3. Maize Production in EthiopiaEt
Page 23 and 24: Food products, like corn meal, corn
Page 25 and 26: 2.6. Origin, Distribution and World
Page 27 and 28: 2.8. Importance of IntercroppingCer
Page 29 and 30: (Rusinamhodzi et al., 2012). Simila
Page 31 and 32: Photo synthetically active radiatio
Page 33 and 34: usually reduces weed occurrence (Zu
Page 35 and 36: Ayisi, 2005). Higher plant densitie
Page 37 and 38: The Somali Regional State has a bim
Page 39 and 40: maize. The treatments combinations
Page 41 and 42: using a spectrophotometer (Olsen et
Page 43 and 44: For cowpeaNumber of pods per plant:
Page 45 and 46: Net benefit (NB): was calculated by
Page 47 and 48: Moreover, the pH value was 7.71, wh
Page 49 and 50: 2002). In addition to that, the dif
Page 51 and 52: allows sole crops to extend its veg
Page 53 and 54: cowpea increased, the height of the
Page 55 and 56: of ears per plant in intercropped m
Page 57 and 58: variety. This result was in conform
Page 59 and 60: The highest HI (47.86%) was recorde
Page 61 and 62:
Table 10.Effects of densities and v
Page 63 and 64:
Table 11.Interaction effect of the
Page 65 and 66:
Table 12.Effects of component densi
Page 67 and 68:
Significantly higher number of pods
Page 69 and 70:
density of cowpea to 50%. This decr
Page 71 and 72:
Harvest Index (%)Harvest index of c
Page 73 and 74:
Tauro et al. (2013) showed that whe
Page 75 and 76:
The highest net benefit (69,264.81
Page 77 and 78:
varieties and planting density of c
Page 79 and 80:
Altieri, M.A., Glaser, D.L. & Schmi
Page 81 and 82:
Chemeda F, 1996, Effect of bean and
Page 83 and 84:
Demessew Mengesha,2002. Effect of p
Page 85 and 86:
Florentine, S.K. & Fox, J.E.D., 200
Page 87 and 88:
IPS (Industrial Project Service), 2
Page 89 and 90:
Li L, Sun JH, Zhang FS, Li XL, Yang
Page 91 and 92:
Africa and Australia. Eds: Whitebre
Page 93 and 94:
Raji, J.A. (2007). Intercropping so
Page 95 and 96:
Sisay, T., (2004).Effect of plantin
Page 97 and 98:
USDA, 2016. United States Departmen
Page 99 and 100:
APPENDIXESAppendix Table 1.Mean squ
Page 101 and 102:
Appendix Table 5.Mean square values
Page 103 and 104:
Experimental Photos90
Page 105:
92
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