In the recent years ,Kenya's Public Procurement has experienced phenomenal importance with the formation of the Public Procurement and Oversight Authority and the subsequent reforms seeing the institutionalization of procurement in all public entities .With the launch in 2008 of Kenya's development blue print vision 2030, the role of public procurement in stimulating economic growth and development has received more attention than before .The central objective of this study is to examine the effect of internal organization communication channels on efficiency of the procurement function in public institutions in Kenya using Kenya Seed Company as a case study . The study aimed at determining the effect of communication between procurement personnel on supplier selection, effect of communication between procurement and user departments on quality control of goods and services, effect of communication between procurement personnel on staff training and performance and well as effect of communication between procurement and user departments on inventory management. Data was collected by means of a structured questionnaire. Analysis of quantitative data was done using measures of central tendency, correlation and regression analysis. From the findings, communication between procurement department personnel explained 36 % of procurement efficiency, communication on quality control of goods and services explained 32% of procurement efficiency, communication on staff training and performance explained 22% of procurement efficiency while communication on inventory management explained 13 % of procurement efficiency. For the public entities to realize increased efficiency and effectiveness in the delivery of services, these four factors must be put into consideration during execution of procurement functions.