Browsing Faculty of Agriculture & Veterinary Medicine (FAg / FVM) by Subject "Yield"

Now showing items 1-8 of 8

    • Combining the yield ability and secondary traits of selected cassava genotypes in the semi-arid areas of Eastern Kenya 

      Kamau, Joseph; Melis, Rob; Laing, Mark; Derera, John; Shanahan, Paul; Ngugi, Eliud (Department of plant Science and crop protection, University of Nairobi, 2010-07)
      Despite the importance of cassava for food security in semi-arid areas of Kenya, there is a lack of information regarding gene action determining yield of local varieties. Therefore the objective of this study was to ...

    • Effect of intercropping bulb onion and vegetables on purple blotch and downy mildew 

      Narla, R.D; Muthomi, J. W; Gachu, S.M; Nderitu, G.H; Olubayo, F.M (University of NairobiDepartment of plant science and crop protectionDepartment of plant science and crop protection, 2011)
      Field experiments were conducted over two growing seasons to determine the effectiveness of vegetable intercrops in the management of downy mildew (Peronospora destrutor) and purple blotch (Alternaria porri) of bulb onion. ...

    • effect of nitrogen and phosphorus fertilizer on growth and yield of ironweed (vernonia galamesis) 

      Mati, G N; Mburu, M W K; Kurji, P N; Shibairo, Solomon I (Department of Plant Science and Crop Protection, University of Nairobi, 2003)
      Irooweed (Vernonia galamensis) is a promising new crop for industrial oil but information on its response to fertiliser is scanty. A field experiment was conducted at the University of Nairobi Field Station farm during two ...

    • Evaluation of Cabbage Varietal Resistance Against Diamondback Moth (Plutella xylostella) Infestation and Damage 

      Hasheela, Eddie B.S.; Nderitu, John H.; Olubayo, Florence M. (Department of Plant Science and Crop Protection, University of Nairobi, 2010)
      This field study was conducted to evaluate the varietal resistance of cabbage (Brassica oleracea var. capitata] against diamondback moth (DBM) (Plulel/a xylostella) infestations and damages at the University of Nairobi ...

    • Maize yield reduction due to erosion in a high potential area of Central Kenya highlands 

      C.K.K, Gachene; J.P, Mbuvi; N.J, Jarvis; H, Linner (Department of Soil Science, University of NairobiDepartment of Soil Sciences, Swedish University of Agricultural Sciences, 1998)
      The effect of cumulative soil loss on maize (Zea mays L.) growth and yield were investigated on a humicnitisol in Kenya during the 1993 long-rains (LR) and short-rains (SR). The runoff plots had been subjected to different ...

    • Studies on the physiological effects of viruses on sweet potato yield in Kenya 

      Njeru, R.W.; Cheramgoi, E.; Gibson, R.W.; Kiburi, Z. M.; Obudho, E.; Yobera, D.; Mburu, M. W. K. (Association of Applied BiologistsDepartment of Plant Science and Crop Protection, University of Nairobi, 2004-08)
      Experiments to determine the effect of the three viruses most common on Kenyan sweet potato varieties were carried out at the University of Nairobi Kabete farm. The sweet potato varieties were Bungoma, Kemb 10 and Ex-Shimba ...

    • Tolerance level of alternaria sesami and the effect of seed infection on yield of sesame in Kenya 

      Ojiambo, P S; Oyiecho, P O; Narla, R D; Mibey, R K (Department of Plant Science and Crop Protection, University of NairobiDepartment of Botany, University of Nairobi, 2000)
      Field plots of sesame (Sesamum indicum) with six different levels of seed infection with Alternaria sesami were monitored for Alternaria leaf spot severity at Kibwezi, eastern Kenya. The aim of the study was to determine ...

    • Yield and water use efficiencies of maize and cowpea as affected by tillage and cropping systems in semi-arid Eastern Kenya 

      Kironchi, G; Esilaba, A O; Heng, L K; Gachene, C K K; Mwangi, D M; Miriti, J M (University of Nairobi,Department of Land Resource Management and Agricultural Technology, 2012)
      Soil water conservation through tillage is widely accepted as one of the ways of improving crop yields in rainfed agriculture. Field experiments were conducted between 2007 and 2009 to evaluate the effects of conservation ...