Working Document Series Open Access The benefits and productivity of cereal-legume intercropping with and without supplementary irrigation in the semi-arid highlands of Tigray, Ethiopia A. Araya · G. Girmay · E. Solomon · T. Yemane Low soil fertility and limited water availability are the major hampering factors to crop production in the semi arid highlands of Ethiopia. Thus poverty and hunger is evident to the ever increasing population in the country. Comprehensiv… RUF-36332 2016 CC BY 4.0 20 Oct 2016