Working Document Series Open Access The Effect of Different In-Situ Conservation Methods on Yield of Teff in Tigray, Northern Ethiopia A. Araya · H. Solomon · Tezera Yared The imbalance in food supply and demand urgently calls for more efficient use of water to enhance food security and promote sustainable agricultural production. Teff is one of the economical and staple food crops grown in northern Ethiopia… RUF-32082 2012 CC BY 4.0 13 May 2014