Publications


2012

G.H.N., N.  2012.  supervision to Asiko, Grace Pollinating of Strawberries by stingless bees in Kenya . , Nairobi, Kenya.: University of Nairobi.

2011

Ochillo, WN, Nyamasyo GH.  2011.  Pest status of bean stem maggot (Ophiomyia sp.) and Black bean aphid (Aphis fabae) in Taita District, Kenya.. Tropical & Sub-tropical Agroecosystems. 13(1):91-97.
J.J Muturi, J.P Mbugi, J.M Mueke, Lagerlof J, J.K Mungatu, Nyamasyo G, Gikungu M.  2011.  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. 13(1):37-42..
C.W Maribie, G.H.N Nyamasyo, P.N Ndegwa, Lagerlof J, Gikungu M.  2011.  Abundance and Diversity of Soil Mites (acari) along a gradient of land-use types in Taita-Taveta, Kenya,. Tropical & Sub-Tropical Agro-ecosystems. 13:11-27.
and Nyamasyo, WOGNH.  2011.  Pest status of bean stem maggot (Ophiomyia sp.) and Black bean aphid (Aphis fabae) in Taita District, Kenya. Tropical & Sub-tropical Agroecosystems. Vol. 13 (1):pp.91to97.
J.J Muturi, J.P Mbugi, MLMNGJMJJ.  2011.  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. Vol. 13:pp11to27.
C.W Maribie, G.H.N Nyamasyo, NLPNJ & M.  2011.  Abundance and Diversity of Soil Mites (acari) along a gradient of land-use types in Taita-Taveta, Kenya,. Tropical & Sub-Tropical Agro-ecosystems. Vol. 13,:pp11to27..

2010

  2010.  International Conference on Biodiversity, Land Use and Climate Change, , 15th- 17th Sep. International Conference . , Intercontinental Hotel, Nairobi, Kenya.

2009

Gikungu, M, Nyamasyo G, Muturi J, Mbugi JP, Mueke J, Jan Langerlof, Mungatu J.  2009.  Collembola Richness And Diversity Along A Gradient Of Land-use Intensity And Soil Abiotic Factors In Taita, Kenya. Website
F.O. Ayuke, N.K. Karanja, E.M. Muya, B.K. Musombi, Mungatu J, Nyamasyo GHN.  2009.  Macrofauna diversity and abundance across land use systems in Embu, Kenya.. Tropical and Sub-tropical Agroecosystems,. :371-384.
N.K. Karanja, F.O. Ayuke, E.M. Mua, Musombi BK, Nyamasyo GHN.  2009.  Soil Macrofauna community structure across land-use systems of Taita, Kenya, . Tropical and Sub-tropical Agroecosystems. . :385-396.
J.J. Muturi, J.P. Mbugi, J.M. Mueke, Jan Langerlof, J.K. Mungatu, Nyamasyo GHN, Gikungu M.  2009.  Collembola density and diversity along a gradient of land-use types in Embu District, Eastern Kenya,. Tropical & Sub-tropical Agroecosystems. :361-369.
J. Nderitu, M. Sila, Nyamasyo G, Kasina M.  2009.  Insect species associated with sweet potatoes (Ipomoeae batatas L.) (LAMK) in Eastern Kenya.. Int. J. Sustain. Crop Prod.. 4(1):14-18.

2008

J.H. Nderitu, &, Nyamasyo GHN, Kasina JM.  2008.  Eds. Agricultural Entomology (Practical Aspects of Agric. Entomology), First Edition (ISBN 9966-05-121-X). , Nairobi, Kenya.: Equatops Trading
Nderitu J.H., Kasina, M.J., Nyamasyo G.N., C.N. W, J. A.  2008.  Management of Thrips (Thysanoptera: Tripidae) on French beans (Fabaceae) in Kenya:. Economics of insecticide Applications. Journ. Entomol. . 5(3):148-155.
D.N.Obonyo, G.L Lovei, J.M.Songa, F.A. Oyieke, S.N.Mugo, G.H.N.Nyamasyo.  2008.  Development and mortality responses of Chilo partellus Swinhoe (Lepidoptera: Crambidae) and Sesamia calamistis Hampson (Lepidoptera: Noctuidae) following partial feeding on Bt-transgenic maize. . Journal of Aplied Biosciences . 11:554-563.
DR. OYIEKE, FLORENCEAWINO, DR. NYAMASYO GIDEONNZIOKAH.  2008.  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. Journal of Applied Biosciences 10: 424 . : Survey Review 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

&, NGHN, Nderitu J.H..  2007.  Invertebrate Zoology for Beginners.(ISBN. 9966-05-131-7) . , Nairobi, Kenya.: Equatops Trading

2006

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