Browsing Articles: Department of Water and Agricultural Resource Management by Author "Onyari, Charles N."
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Development of a Water Quality Assessment Index for the Chania River, Kenya
Robert, G. K.; Onyari, Charles N.; Mbaka, J. G. (Taylor and Francis, 2020-11)Human-related activities are known to have deleterious effects on the water quality of aquatic ecosystems, but there is limited information on the impact of these on rivers in tropical regions, such as the Chania River ... -
Development of a Water Quality Assessment Index for the Chania River, Kenya
Kasyoka, Robert; Onyari, Charles N.; Mbaka, James G. (Taylor and Francis, 2020-11)Human-related activities are known to have deleterious effects on the water quality of aquatic ecosystems, but there is limited information on the impact of these on rivers in tropical regions, such as the Chania River ... -
Evaluating the surface functional groups on banana leaf petioles and the resultant biochar for potential adsorbance
Ndung’u, Paul W.; Mwithiga, Gikuru; Onyari, Charles N.; Muriithi, Genson; Mukono, Simon T. (JMES, 2020)The presence of surface functional groups is key to the performance of an adsorbent material. The aim of this study was to evaluate the presence of functional groups on banana leaf petiole and on biochar made from ... -
Growth Parameters of DK8031 Maize Variety as Affected by Varying Irrigation and Nitrogen Fertilizer Rates in Embu County, Kenya
Onyari, Charles N.; Kibe, Antony M.; Mwonga, Samuel (David Publishing, 2015)Determination of crop growth parameters of maize helps assess the performance of the crop for food security. A study was conducted in two seasons covering 2012 and 2013 to establish optimal irrigation and nitrogen fertilizer ... -
Inter-seasonal Effects on Selected Maturity Parameters of DK8031 Maize Grown under Varying Irrigation and Nitrogen Levels in Embu County, Kenya
Onyari, Charles N.; Kibe, Antony M.; Mwonga, Samuel (2017-07)Maize is a staple food and a source of carbohydrates to a large proportion of people in Kenya. The performance of crop plants such as maize depends on a number of factors such as climate, soil characteristics and plant ...