Influence of Climate on Tea Yields in Mount Kenya Region

Journal of Kenya Meteorological Society


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Volume 3:1

Influence of Climate on Tea Yields in Mount Kenya Region

Stephen K. Rwigi*, Silvery B. B. Oteng’i*

*Department of Mathematics Kenya Science Campus, University of Nairobi, ** Centre for Disaster Management and Humanitarian Assistance (CDMHA), Masinde Muliro University of Science and Technology (MMUST)



Department of Mathematics, Kenya Science Campus, University of Nairobi,

P.O. Box 30596-00100 GPO, Nairobi

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(Manuscript received 20 February 2008, in final form 20 April 2009)


This study investigated the existence of a systematic relationship between tea yields and climatic parameters in the tea growing areas of Mount Kenya region. Both linear and multiple regression models were applied. The data used in this study were the daily mean minimum and maximum temperatures, daily mean relative humidity, radiation, total weekly rainfall, and total weekly tea yields. One week is taken to be seven days with the first day of July being the first day of the first week of the year. The results of applying these models using weekly data were found to be satisfactory and it was concluded that climatic parameters can indeed be used to predict tea yields in this region.

Key words: Aberdare Mountains, climatic parameters, Mt. Kenya, Photosynthetically active radiation, regression models, Rift Valley, Tea yield.

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