Assessing the interaction in maize cropping density, nitrogen, and soil moisture with a systems simulator in semi-arid Machakos District, Kenya GE Okwach MM Siambi CS Simyu DOI: 10.4314/eaafj.v69i2.1817 Abstract No Abstract Available E. Afr. Agric. For. J. 2003 69(2), 157-171 Requires Subscription PDF Published 2005-01-02 Issue Vol. 69 (2003) Section Articles Copyright for articles published in this journal is retained by the journal.