Browsing Research and Publications by Author "Getenga, Zachary"
Now showing items 1-12 of 12
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Atrazine and terbuthylazine mineralization by an Arthrobacter sp. isolated from a sugarcane-cultivated soil in Kenya
Getenga, Zachary; Dörfler, Ulrike; Iwobi, Azuka; Schmid, Michael; Schroll, Reiner (Chemosphere, 2009)A tropical soil from a Kenyan sugarcane-cultivated field showed a very high capability to mineralize 14C-ring-labeled atrazine. In laboratory experiments this soil mineralized about 90% of the applied atrazinewithin98 ... -
Biodegradation of carbofuran in soils within Nzoia River Basin, Kenya
Onunga, Daniel O.; Kowino, Isaac O.; Ngigi, Anastasiah N.; Osogo, Aggrey; Orata, Francis; Getenga, Zachary; Were, Hassan (Taylor & Francis, 2015)Carbofuran (2,3-dihydro-2,2-dimethylbenzofuran-7-yl methylcarbamate) has been used within the Nzoia River Basin (NRB), especially in Bunyala Rice Irrigation Schemes, in Kenya for the control of pests. In this study, the ... -
Biodegradation of phenylurea herbicide diuron by microorganisms from long-term-treated sugarcane-cultivated soils in Kenya
Ngigi, Anastasiah; Getenga, Zachary; Boga, Hamadi; Ndalut, Paul (Taylor & Francis, 2011)The phenylurea herbicide diuron [N-(3,4-dichlorophenyl)-N,N-dimethylurea] is widely used alone or in a broad range of herbicide formulations. Its degradation in sugarcane-cultivated soils which have been impacted by the ... -
Comparison of lead levels with calcium, zinc and phosphorus levels in human blood
Mogwasi, Richard; Getenga, Zachary; Nyambaka, Hudson; Wanjau, Ruth; Murungi, Jane; Okiambe, Enock; Onyancha, Evans (European Centre for Research Training and Development UK, 2013)The purpose of the study was to determine how the levels of calcium, phosphorus and zinc affected the levels of lead in the human blood. The levels of lead, calcium, zinc and phosphorus in human blood of subjects from ... -
Degradation characteristics of metribuzin in soils within the Nzoia River Drainage Basin, Kenya
Mutua, Gershom Kyalo; Ngigi, Anastasiah Njoki; Getenga, Zachary (Taylor & Francis, 2016)Metribuzin, a triazinone herbicide, is heavily used within the expansive Nzoia River Drainage Basin in Kenya for the optimization of sugarcane yields. For field experiments, soils were spiked with metribuzin and amended ... -
The dissipation and degradation of methoxy‐ 14C malathion in soil under tropical conditions
Getenga, Zachary; Jondiko, J.I.O.; Wandiga, S.O. (Taylor & Francis Group, 2000)l4C-malathion[S-1,2-bis(ethoxycarbonyl) ethyl O,O-dimethyl phosphorodithioate] has been studied in soil under tropical field conditions by applying the 14C-malathion pesticide to soil in Polyvinyl chloride (PVC) pipes ... -
Effect of Occupation on the Levels of Lead in Human Blood in Kenya
Mogwasi, Richard; Nyagaka, Benuel; Okiambe, Enock; Nyambaka, Hudson; Murungi, Jane; Getenga, Zachary; Amboga, Enock; Onyancha, Evans; Abuga, Samuel; Kenanda, Evans (Chemistry and Materials Research, 2013)The occupation an individual is involved in exposes him or her to different levels of lead from the work environment. The main occupation of the study subjects included working in the petrol stations, ... -
The Influence of Filter Mud Compost and Tithonia diversifolia Leaves on the Dissipation of Diuron in Soils within the Nzoia River Drainage Basin, Kenya
Kimosop, Selly Jemutai; Orata, Francis; Getenga, Zachary (Springer, 2012-05-22)The aim of the study was to evaluate the environmental impact of filter mud compost and Tithonia diversifoila amendments on the dissipation of diuron in sugarcane cultivated soils. Filter mud compost is the by-product of ... -
Intensification of Agriculture as the Driving Force in the Degradation of Nzoia River Basin: the Challenges of Watershed Management
Onywere, S. M.; Getenga, Zachary; Baraza, W; Twesigye, C.K.; Mwakalila, S.S.; Nakiranda, J. K. (2007)The Lake Victoria riparian countries suffer from devastating effects of floods and droughts occasioned by severe weather related natural phenomena. The floods often follow prolonged droughts that have become a mark of ... -
METRIBUZIN SORPTION DYNAMICS IN ACID SOILS OF NZOIA SUGARCANE ZONE IN WESTERN KENYA
Lagat, Silas C; Lalah, Joseph O; Kowenje, Chrispine O; Getenga, Zachary; Chepkui, Richard (2011)The adsorption, desorption and leaching of metribuzin in agricultural soil samples taken from Nzoia sugarcane farming area in Kenya were determined using standard methods. The Freundlich adsorption isotherm constants ... -
Mineralization of Glyphosate in Compost-Amended Soil Under Controlled Conditions
Getenga, Zachary; Kengara, F. O. (Springer, 2004) -
Soil properties effects and management of organic residues to improve C sequestration, reduce N losses and improve crop yields
Danga, B.O.; Mochoge, B; Mugwe, J; Getenga, Zachary (2010)Rates of decomposition of organic materials in soil determine the amount of carbon (C) which is mineralized and released as CO2 versus the amount of C that is retained in various forms in the soil. Decomposition rates ...