Blar i NIBIO Brage på forfatter "Guimapi, Ritter A."
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The effect of climate variability in the efficacy of the entomopathogenic fungus Metarhizium acridum against the desert locust Schistocerca gregaria
Kamga, Samuel F.; Ndjomatchoua, Frank T.; Guimapi, Ritter A.; Klingen, Ingeborg; Tchawoua, Clément; Hjelkrem, Anne-Grete Roer; Thunes, Karl H; Kakmeni, Francois M. (Peer reviewed; Journal article, 2022-05-09)Despite substantial efforts to control locusts they remain periodically a major burden in Africa, causing severe yield loss and hence loss of food and income. Distribution maps indicating the value of the basic reproduction ... -
Farmers’ Knowledge and Farm-Level Management Practices of Coconut Pests in Ghana: Assessment Based on Gender Differences
Tettey, Elizabeth; Aidoo, Owusu Fordjour; Arhin, Linda; Guimapi, Ritter A.; Ablormeti, Fred Kormla; Dampare, Frank; Ampadu-Ameyaw, Richard; Cobbah, Jeffet Ekow; Afram, Yayra; Kwarteng, Frank; Yankey, Ndede (Peer reviewed; Journal article, 2022-07-08)Coconut production is significantly constrained by a wide variety of pests. Anecdotal evidence also suggests that management of these pests is influenced by gender differences. Therefore, there was a need to assess farmers' ... -
Harnessing data science to improve integrated management of invasive pest species across Africa: An application to Fall armyworm (Spodoptera frugiperda) (J.E. Smith) (Lepidoptera: Noctuidae)
Guimapi, Ritter A.; Niassy, Saliou; Mudereri, Bester Tawona; Abdel-Rahman, Elfatih M.; Tepa-Yotto, Ghislain T.; Subramanian, Sevgan; Mohamed, Samira A.; Thunes, Karl H; Kimathi, Emily; Agboka, Komi Mensah; Tamò, Manuele; Rwaburindi, Jean Claude; Hadi, Buyung; Elkahky, Maged; Sæthre, May-Guri; Belayneh, Yeneneh; Ekesi, Sunday; Kelemu, Segenet; Tonnang, Henri E. Z. (Peer reviewed; Journal article, 2022-02-18)After five years of its first report on the African continent, Fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) is considered a major threat to maize, sorghum, and millet production in sub-Saharan Africa. Despite ... -
Linking spatial distribution of Rhipicephalus appendiculatus to climatic variables important for the successful biocontrol by Metarhizium anisopliae in Eastern Africa
Guimapi, Ritter A.; Klingen, Ingeborg; Tonnang, Henri E. Z.; Nana, Paulin (Peer reviewed; Journal article, 2022-12-22)Cattle production is constantly threatened by diseases like East Coast fever, also known as theileriosis, caused by the protozoan parasite Theileria parva which is transmitted by ticks such as the brown ear tick, Rhipicephalus ... -
PPMaP: Reproducible and Extensible Open-Source Software for Plant Phenological Phase Duration Prediction and Mapping in Sub-Saharan Africa
Tonnang, Henri E. Z.; Guimapi, Ritter A.; Bruce, Anani Y.; Makumbi, Dan; Mudereri, Bester T.; Balemi, Tesfaye; Craufurd, Peter (Peer reviewed; Journal article, 2020-10-30)Understanding the detailed timing of crop phenology and their variability enhances grain yield and quality by providing precise scheduling of irrigation, fertilization, and crop protection mechanisms. Advances in information ...