Publications

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& NGHN, Nderitu J.H. Invertebrate Zoology for Beginners.(ISBN. 9966-05-131-7) . Nairobi, Kenya.: Equatops Trading; 2007.
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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.
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.
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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.
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Emily N Kitivo, GH Nyamasyo JKM. "Agroecosytem disservices and service providers." South Eastern Kenya University; 2018.
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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.
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G.H.N. N. supervision to Asiko, Grace Pollinating of Strawberries by stingless bees in Kenya . Nairobi, Kenya.: University of Nairobi.; 2012.
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
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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.
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.
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.
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, 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.
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Kasangaki P, Gideon Nyamasyo, Paul Ndegwa RK. "Assessment of Honeybee Colony Performance in the Agro-Ecological Zones of Uganda." Current Investigations in Agriculture and Current Research. 2018;1(5):122-127.
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.
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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.
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.
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.
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Simeon Lesrima, GH Nyamasyo KKK. "Assessment of Water resources Access, Use and Management, in the Upper Ewaso Nyiro North River Basin: A Case for Laikipia County." Journal of International Business, Innovation and Strategic Management. 2018;1(8):1-21.
Simeon Lesrima, GH Nyamasyo KKK. "Assessment of the trends and presence of Water Related Conflicts in the Upper Ewaso Nyiro North River Basin: A Case for Laikipia County." Journal of International Business, Innovation and Strategic Management. 2018;1(8):22-40.
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Willis N Ochilo, Gideon N Nyamasyo, Dora Kilalo WOMOFCTKELK. "Characteristics and production constraints of smallholder tomato production in Kenya." Scientific African. 2019;2:e00014.
Willis N Ochilo, Gideon N Nyamasyo, Dora Kilalo WOMOFCTKELK. "Characteristics and production constraints of smallholder tomato production in Kenya." Scientific African. 2019;2:e00014.

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