Browsing by Author "Omongo, C.A."

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Insecticide application to reduce pest infestation and damage on cowpea in Uganda
    (African Plant Protection, 1998-08-05) Omongo, C.A.; Adipala, E.; Ogenga-Latigo, M.W.; Kyamanywa, S.
    Field assessments were carried out in seven districts of eastern and northern Uganda to establish pest infestation of cowpea (Vigna unguiculata) and the extent of insecticide usage to control these pests. More than 60 % of the farmers in eastern Uganda applied insecticides to control cowpea pests whereas no farmers in the northern region used chemieels for this purpose. The extent of pest infestation at different crop growth stages appeared to influence pesticide application, with mostlarmers spraying during the vegetative (30 %) and flowering (50 %) stages. and only a few at podding (10 %). There was evidence 01 ineffective/uneconomical use of insecticides. On-farm trials indicated that insecticide protection at all crop growth stages gave the best control. leading to yield gains 01 more than 50 %. Spraying during vegetative and flowering stages was also effective. giving yield gains of about 40 %. A three-spray programme (at vegetative growth. flowering and podding) was most profitable in the short rainy season at Serere (marginal return = 6.08) and second best in the long rainy season at Kabanyolo (marginal return = 4.35).
  • Thumbnail Image
    Item
    Pests and diseases on cowpea in Uganda: Experiences from a diagnostic survey
    (African Crop Science Journal, 1999) Adipala, E.; Omongo, C.A.; Sabiti, A.; Obuo, J.E.; Edema, R.; Bua, B.; Atyang, A.; Nsubuga, E.N.; Ogenga-latigo, M.W.
    A diagnostic survey (DS) using a questionnaire covering 525 farm households was conducted in 1993/94 to determine the status of cowpea (Vigna unguiculata L. Walp) and its production constraints in Uganda. Subsequent on-farm assessments were made during the two rainy seasons of 1994 to verify and quantify the survey information. Additionally, on-station trials were conducted to address issues arising from the information. Insect pests, low plant population densities, poor weed management and labour bottlenecks are the most important constraints to cowpea production in Uganda. Insect pest damage, particularly by bruchids, is most important. Research to develop integrated pest management (IPM) strategies based on the finding of this study are in progress.