Birech, Mrs Rhoda; Freyer, Prof. Bernhard; Friedel, Prof. Juergen and Leonhartsberger, Mr. Philipp (2008) Effect of weather on organic cropping systems in Kenya. Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.