Bio

Publications


2016

Maina, PK, P. M. Wachira, Okoth SA, Kimenju JW, Mwangi JM.  2016.  Co-occurrence and Diversity of Soil Trichoderma and Fusarium species from Different Land Use Intensities in Machakos County, Kenya. ACRI. 4(1):1-13.
Njunge, LW, Wachira PM, Okoth SA.  2016.  Enhancement of Colonisation of Soybean Roots by Arbuscular Mycorrhizal Fungi Using Vermicompost and Biochar. Agriculture, Forestry and Fisheries. 5(3):71-78.

2015

Maina, PK, Wachira PM, Okoth SA, Kimenju JW.  2015.  Distribution and Diversity of Indigenous Trichoderma species in Machakos County, Kenya. British Microbiology Research Journal. 9(4):1-15.
Wachira, PM, Muindi JN, Okoth SA.  2015.  Survey of Nematode Destroying Fungi from Selected Vegetable Growing Areas in Kenya.. Agriculture, Forestry and Fisheries.. 4(4):159-164.
Karanja, LW, Wachira PM, Muthomi JW, Phiri NA, Mutegi CK, Kanampiu F, J.M.Wagacha, Nzioka HS, Gikaru AK, Mahuku G, Karanja DK, Otieno W.  2015.  Influence of weather on the incidence of aflatoxigenic fungi at pre-harvest stage of maize value chain in Makueni, Kenya, 27th May. African Symposium on Mycotoxicology. , Livingstone , Zambia
Wachira, PM, Kimenju JW, Otipa M.  2015.  Change in Diversity and Abundance of Nematode Destroying Fungi in Land Use under Irrigation in Selected Small Scale Irrigation Schemes in Kenya. Agriculture, Forestry and Fisheries. . 4(1 ):7-13..
Maina, PK, Wachira PM, Okoth SA, Kimenju JW, Otipa M, Kiarie JW.  2015.  . Effects of Land-Use Intensification on Distribution and Diversity of Fusarium Species in Machakos County, Kenya. . Journal of Agricultural Science. 7(4):48-60.

2014

Ng’ang’a, TM, Wachira PM, Kimenju JW, Wango TJ, Matheri JN.  2014.  Solid Waste Dumping Site Selection Using GIS and Remote Sensing for Kajiado County, Kenya. . Journal of Earth Science and Engineering. 4(2014):693-702.
Nyaga, P. N., Jefwa, J., Muthuri, C, Okoth, S.A, Matiru, V, Wachira P.  2014.  Influence of soil fertility amendment practices on ex-situ utilisation of indigenous arbuscular mycorrhizal fungi and performance of maize and common bean in Kenyan highlands. Tropical and Subtropical Agro ecosystems . 17:129–141.
Wachira, PM, Kimenju JW, Okoth SA, Kiarie JW.  2014.  Conservation and Sustainable Management of Soil Biodiversity for Agricultural Productivity . Sustainable Living with Environmental Risks. , Japan: Springer
Wachira, PM, and J. W. Kimenju, Okoth SA, Wangu JW, Ng’ang’a TM.  2014.  Effect of land use on abundance and diversity of nematode destroying fungi and soil nematodes in Embu County, Kenya. Journal of Agricultural Science. 6(5):132–141.
Kimenju, JW, Maundu JN, Muiru WM, Wachira PM, Gichuru EK.  2014.  Reaction of Selected Coffee Germplasm to Root-Knot Nematodes in Kenya. Journal of Natural Sciences Research. 4(3):68–75.
Maundu, JN, Kimenju JW, Muiru WM, Wachira PM, Gichuru EK.  2014.  Plant Parasitic Nematodes Associated With Coffee in Kenya and Factors Influencing their Occurrence, Abundance and Diversity. Journal of Biology, Agriculture and Healthcare. 4(3):120–129.
Kimenju, JW, Wachira PM, Lang'at JK, Otieno W, Mutua GK.  2014.  Evaluation of selected methods in the control of plant parasitic nematodes infecting carnation.. Journal of Agricultural Science. 6(3 ):31-38.

2013

Wachira, P.M, Kimenju, J.W, Mwaniki, S.W, Gathaara, V. N, Ndiritu, M. M.  2013.  Incidence of Pests and Diseases Affecting Banana in a Commercial Banana Production Setting in Kenya, 3 - 6th Dec.2013. 13th Workshop on Sustainable Horticultural Production in the Tropics. , Meru University of Science and Technology (MUST), Meru
Karanja, N.K, Wachira, P.M, Muthomi, J.W, Phiri, I.K., Mutegi, C.K, Nzioki, H.S, Gikaru, A.K, Kanampiu F, Wagacha, J.M.  2013.  Use of geographical information system to determine incidence of Aspergillus section flavi in different soils in Kaiti, Kenya. East African Agricultural and Forestry Journal.
Wachira, P.M, Kimenju, J.W, Okoth, S.A, Kiarie J.W.  2013.  Diversity of nematodes and nematode destroying fungi as influenced by land use in Taita Taveta, Kenya. Journal of Agricultural Science. Journal of Agricultural Science . 5(12):154-161.
Wachira, P.M, Kimenju, J.W, Kiarie J.W, Kihurani, A.W, Mwaniki SW.  2013.  Occurrence and diversity of nematode destroying fungi in banana production zones in Maragua. Journal of Agricultural Science . 5(12):180–186..

2012

Wachira, P.M, Okoth, S.A, Kimenju, J.W, Mibey, R. K, Kiarie, J.W.  2012.  Restoration of natural regulatory mechanisms of plant parasitic nematodes in agricultural systems, 22 - 26 Oct. International Conference ‘Integrated Fertility Management in Africa: From Microbes to Markets. , Safari Park Hotel, Naiorbi
Karanja, N.K, Wachira, P.M, Muthomi, J.W, Phiri, I.K., Mutegi, C.K, Nzioki, H.S, Gikaru, A.K, Kanampiu.  2012.  Use of geographical information system to determine incidence of Aspergillus section flavi in different soils in Kaiti, Kenya, 22 - 26 Oct. 13th ARI Conference: Agricultural innovation system for improved productivity and competitiveness in pursuit of vision 2030”. , KARI HQs
Wachira P.M, Kimenju J, Kiarie J, Mwaniki S.  2012.  Diversity of nematode destroying fungi in banana-based farming systems in Maragua, Kenya, 5th Dec. 2012. 12th Workshop on sustainable horticultural productions in the tropics. , Bondo University College, Bondo - Kenya
Jefwa J.M, Okoth S, Wachira P.M, Karanja N.K, Kahindi J.K, Njuguini S. K, Ichami S, Mung'atu J, Okoth P, Huising J.  2012.  Impact of land use types and farming practices on occurrence of arbuscular mycorrhizal fungi (AMF) in Taita-Taveta district in Kenya.. Agriculture, Ecosystems and Enviroment. 157:32-39.
Ayuke F.A, Karanja N.K, J.J O, Wachira P.M, Mutua G.K, Lelei D. K, Gachene K.K.  2012.  Agrobiodiversity and potential use for enhancing soil health . Tropical Soils of Africa. , London: Soils and Food Security

2011

Wachira, P.M, Okoth, S.A.  2011.  Effect of Soil fertility management practices on nematode edstroying fungi in Taita, Kenya. Tropical and Subtropical Agro ecosystems. 13(1):51-57.
Wepukhulu M, Kimenju J, Anyango B, Wachira P.M, G.K K.  2011.  Effect of soil fertility manangement practices and Bacillus subtilis on plant parasitic nematodes associated with common bean, Phaseolus vulgaris.. Tropical and Subtropical Agroecosystem. 13(1):27-34.

2009

Kimenju, J.W, Karanja, N.K, Mutua, G.K, Mugambi, R, Wachira, P.M.  2009.  Nematode community Structure as influenced by land use and intensity of cultivation. Tropical and Subtropical Agro ecosystems. 11(2):353-360.
Wachira, P.M, Mibey, R. K, Okoth, S.A, Kimenju, J.W, Kiarie, J.W.  2009.  Diversity of nematode destroying fungi in Taita Taveta, Kenya.. Fungal Ecology. 2(2):60-65.
Wachira P.M.  2009.  USE OF NEMATODE DESTROYING FUNGI AS INDICATORS OF LAND DISTURBANCE IN TAITA TAVETA, KENYA. Tropical and Sub-tropical Agro-ecosystems. 11(2):313-321.: Tropical and Subtropical Agroecosystems, AbstractWebsite

This study was undertaken to determine whether nematode destroying fungi can be used as indicators of
soil disturbances. Soil samples were collected from an indigenous forest, maize/bean, napier grass, shrub and vegetable fields, which represented the main land use types in Taita Taveta district of Kenya. The fungal
isolates obtained were grouped into seven genera and identified. The species identified were, Acrostalagums obovatus, Arthrobotrys dactyloides, Arthrobotrys oligospora, Arthrobotrys superba, Dactyllela lobata, Haptoglosa heterospora, Harposporium anguillulae, Harposporium.sp, Monacrosporium cionopagum and Nematoctonous georgenious. Occurrence of nematodedestroying fungi was significantly (P = 3.81 x 10 -7) different among the land use systems in the study area. Out of the isolates that were positively identified, 33.7 %, 27.9 %, 20.9 %, 11.6 % and 5.8 % were from fields under vegetable, maize/bean, napier grass, shrub and forest, respectively. Soil disturbance accounted for the
highest occurrence of nematode destroying fungi (60.77 %) while moisture, accounted for 23.35%.
Fungal isolates from vegetable gardens were most diverse while soils from the forest were most even
with least diversity. The total richness of nematode destroying fungi was nine, seven, six, and three in
maize bean, napier, shrub and forest habitats respectively. This study has established that nematode
destroying fungi increases with increased land disturbance.

Wachira P.M, Okoth S, Kimenju J.W.  2009.  INFLUENCE OF LAND USE AND SOIL MANAGEMENT PRACTICES ON THE OCCURRENCE OF NEMATODE DESTROYING FUNGI IN TAITA TAVETA, KENYA. Tropical and Subtropical Agro ecosystems. 10 (2 ):213–223.: Tropical and Subtropical Agroecosystems,Website

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