Publications

Found 97 results

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2012
2011
C.W Maribie, G.H.N Nyamasyo NLPNJ & M. "Abundance and Diversity of Soil Mites (acari) along a gradient of land-use types in Taita-Taveta, Kenya,." Tropical & Sub-Tropical Agro-ecosystems. 2011;Vol. 13,:pp 11 to 27.
C.W Maribie, G.H.N Nyamasyo, P.N Ndegwa, Lagerlof J, Gikungu M. "Abundance and Diversity of Soil Mites (acari) along a gradient of land-use types in Taita-Taveta, Kenya,." Tropical & Sub-Tropical Agro-ecosystems. 2011;13:11-27.
J.J Muturi, J.P Mbugi MLMNGJMJJ. "Effects of integrated soil fertility management interventions on the abundance and diversity of soil collembola in Embu and Taita Districts, Kenya." Tropical & Sub-tropical Agroecosystems. 2011;Vol. 13:pp 11 to 27.
J.J Muturi, J.P Mbugi, J.M Mueke, Lagerlof J, J.K Mungatu, Nyamasyo G, Gikungu M. "Effects of integrated soil fertility management interventions on the abundance and diversity of soil collembola in Embu and Taita Districts, Kenya." Tropical & Sub-tropical Agroecosystems. 2011;13(1):37-42.
and Nyamasyo WOGNH. "Pest status of bean stem maggot (Ophiomyia sp.) and Black bean aphid (Aphis fabae) in Taita District, Kenya." Tropical & Sub-tropical Agroecosystems. 2011;Vol. 13 (1):pp. 91 to 97.
Ochillo WN, Nyamasyo GH. "Pest status of bean stem maggot (Ophiomyia sp.) and Black bean aphid (Aphis fabae) in Taita District, Kenya." Tropical & Sub-tropical Agroecosystems. 2011;13(1):91-97.
2010
2009
J.J. Muturi, J.P. Mbugi, J.M. Mueke, Jan Langerlof, J.K. Mungatu, Nyamasyo GHN, Gikungu M. "Collembola density and diversity along a gradient of land-use types in Embu District, Eastern Kenya,." Tropical & Sub-tropical Agroecosystems. 2009:361-369.
Gikungu M, Nyamasyo G, Muturi J, Mbugi JP, Mueke J, Jan Langerlof, Mungatu J. "Collembola Richness And Diversity Along A Gradient Of Land-use Intensity And Soil Abiotic Factors In Taita, Kenya.". 2009.Website
J. Nderitu, M. Sila, Nyamasyo G, Kasina M. "Insect species associated with sweet potatoes (Ipomoeae batatas L.) (LAMK) in Eastern Kenya." Int. J. Sustain. Crop Prod.. 2009;4(1):14-18.
F.O. Ayuke, N.K. Karanja, E.M. Muya, B.K. Musombi, Mungatu J, Nyamasyo GHN. "Macrofauna diversity and abundance across land use systems in Embu, Kenya." Tropical and Sub-tropical Agroecosystems,. 2009:371-384.
N.K. Karanja, F.O. Ayuke, E.M. Mua, Musombi BK, Nyamasyo GHN. "Soil Macrofauna community structure across land-use systems of Taita, Kenya, ." Tropical and Sub-tropical Agroecosystems. . 2009:385-396.
2008
J.H. Nderitu &, Nyamasyo GHN, Kasina JM. Eds. Agricultural Entomology (Practical Aspects of Agric. Entomology), First Edition (ISBN 9966-05-121-X). Nairobi, Kenya.: Equatops Trading; 2008.
Nderitu J.H., Kasina, M.J., Nyamasyo G.N., C.N. W, J. A. "Management of Thrips (Thysanoptera: Tripidae) on French beans (Fabaceae) in Kenya:." Economics of insecticide Applications. Journ. Entomol. . 2008;5(3):148-155.
DR. OYIEKE FLORENCEAWINO, DR. NYAMASYO GIDEONNZIOKAH. "Obonyo DN, Songa JM, Oyieke FA, Nyamasyo GHN and Mugo SN, 2008. Bt-transgenic maize does not deteroviposition by two important African cereal stem borers, Chilo partellus Swinhoe (Lepidoptera: Crambidae) and Sesamiacalamistis Hampson (Lepidoptera: Noctuid.". In: Journal of Applied Biosciences 10: 424 . Survey Review; 2008. Abstract
Objective: To assess Chilo partellus Swinhoe (Lepidoptera: Crambidae) and Sesamia calamistis Hampson(Lepidoptera: Noctuidae) ovipositionalresponses on Bt (Event 216, containing the Cry1Ab gene) andisogenic non-Bt (CML 216) maize plants. Methodology and results: Stem borer moths were allowed to oviposit on maize plants in oviposition cagesunder both choice (cages containing both Bt and non-Bt plants) and non-choice conditions (cagescontaining either only Bt or non-Bt plants). There were no significant differences in the mean numbers of egg batches per plant, eggs per batch, eggs laid per plant and egg hatchability between Bt and non-Bt plants in both choice and non-choice tests. Conclusion and application of findings: Event 216 did not deter oviposition by Chilo partellus and Sesamia calamistis. This factor should be taken into consideration when designing suitable refuge arrangements for managing resistance. Although most of the larvae exposed to the Bt plants would be killed, thus reducingchances of the pests developing resistance, an effective resistance management strategy would require that the Bt plants are further engineered to incorporate additional genes that would make them unattractive for oviposition by stem borer moths.
2007
2006
"Nile Basin Initiative (NBI), Regional Soil Erosion Workshop and Watershed Management.". In: Nile Basin Initiative (NBI), Regional Soil Erosion Workshop and Watershed Management. Addis Ababa, Ethiopia; 2006.
"Nile Basin Initiative micro-grants Regional Capacity-building Workshop.". In: Nile Basin Initiative micro-grants Regional Capacity-building. Cairo Egypt.; 2006.
"The 8th Conference of Parties to CBD.". In: Conference of Parties to CBD . Curitiba, Brazil; 2006.
"12th Conference of Parties of the United Nations Framework Convention on Climate Change,.". In: 12th Conference of Parties . Nairobi, Kenya.; 2006.
Kasina, M.J., Nderitu, J., Nyamasyo, G., Olubayo, F., Waturu, C., Obudho, E. Yobera D. "Diurnal population trends of Megalurothrips sjostedti and Frankliniella occidentalis (Thysanoptera: Thripidae) and their natural enemies on French BEAN Phaseolus vulgaris (Fabaceae)." International J. Trop. Inse. Sc. . 2006;26(1):2-7.
2005
"The 7th Conference of the Parties to the UNCCD.". In: Conference of the Parties to the UNCCD. Nairobi, Kenya.; 2005.
2004
2003
2002
2001
"Kenya Delegate to the 2nd meeting of the Intergovernmental Committee for the Cartagena Protocol on Bio-safety (ICCP – 2),.". In: Intergovernmental Committee for the Cartagena Protocol on Bio-safety (ICCP – 2),. Gigiri, Nairobi.; 2001.
"The 7th Meeting of the Subsidiary Body on the Scientific Technical and Technological Advice (SBSTTA – 7) of the Convention on Biological Diversity (CBD).". In: Subsidiary Body on the Scientific Technical and Technological Advice (SBSTTA – 7) of the Convention on Biological Diversity (CBD). Montreal, Canada.; 2001.
2000
"Kenya Delegate to the 5th Conference of the Subsidiary Body for Scientific Technical and Technological Advice (SBSTTA).". In: Conference of the Subsidiary Body for Scientific Technical and Technological Advice (SBSTTA). Montreal, Canada.; 2000.
"Delegate to the 5th Conference of the Parties to the Convention on Biological Diversity, UNEP Headquarters.". In: Conference of the Parties to the Convention on Biological Diversity,. Gigiri, Kenya.; 2000.
1998
"Fourth Conference of the Parties to the Convention on Biological Diversity, .". In: Conference of the Parties to the Convention on Biological Diversity,. Bratislava, Slovakia.; 1998.
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