1. January 2005 to February 2007. Striga Management Project entitled “Striga control in western Kenya: Raising awareness, containing and reducing the infestation and developing strategies for eradication” in collaboration with SCODP, SACRED Africa TSBF-CIAT, Maseno University, Moi University and FORMAT to the tune of US$ 35,1154.00
2. 01 October 2002 to 31 December 2005. DIFID funded project on “Integrated pest and soil management to combat Striga, stemborers and declining soil fertility in the Lake Victoria basin” in Kenya, Uganda, Tanzania to the tune of £283,650.00
3. 1995-1997: Principal Investigator in the project titled “Studies on witchweed (Striga hermonthica (DEL.) BENTH) seed longevity and maize (zea mays) productivity under different management systems in Kenya” funded by Rockefeller Foundation. US$. 26,900
4. 2000 – 2002: Co-Investigator in the project entitled “Studies On Effects Of Maize And Sesame Mixed And Rotation Cropping Systems On Striga Infestation” funded by ROCKEFELLER FOUNDATION. US$. 66,760
5. 2004-2007: Co-Investigator in the project titled “Striga Control in Western Kenya: Raising awareness, containing and reducing the infestation and developing strategies for eradication” funded by AATF. US$. 57,942.
6. 2008: Co-Investigator in the project titled “The Striga Technology Extension Project (STEP)” funded by AATF. US$. 329,384

2010: Principal Investigator in the project entitled “Integrated Striga control and improved soil health in western Kenya” funded by AATF. US$. 132,300