1 “ECONOMIC EVALUATION OF ORGANIC AND INORGANIC RESOURCES FOR RECAPITALIZING SOIL FERTILITY IN SMALLHOLDER MAIZE- BASED CROPPING SYSTEMS OF CENTRAL KENYA” * JM. Macharia 2 , SK. Kimani 1 , LN. Kimenye 2 , RA. Nyikal 2 , J. Ramisch 3 1 Kenya Agricultural Research Institute (KARI), PO Box 30148, Nairobi, Kenya, 2 University of Nairobi (UON),P.O. Box 29053, Nairobi, Kenya, 3 Tropical Soil Biology and Fertility Institute (TSBF-CIAT) P.O. Box 30677, Nairobi, Kenya. * Corresponding/presenting Author’s E-mail: jmacharia2003@yahoo.com , Tel: 254- 20-340196, 254-722-558066. A poster paper prepared for presentation at 26 th Conference of the International Association of Agricultural Economics (IAAE), Gold Coast, Australia on 12-18 th August 2006 Copyright 2006 by JM. Macharia, SK. Kimani, LN. Kimenye, RA. Nyikal and J. Ramisch . All rights reserved. Readers may make verbatim copies of this document for non-commercial purposes by any means, provided that this copyright notice appears on all such copies.