I need correction please 1 Introduction In Algeria, the food security of populations depends to a large extent on cereals, mainly wheat , wheat production is highly dependent on local and inter-annual climate variations (Bousba, 2012). according to the same author, domestic production contributes only 20% of human consumption, so the difference is made by importing Fertility problems in plowed soils have led to the development of alternative plowing techniques , grouped under the term conservation soil work (Köller, 2003). According to Hatfield et al., (2001), the DS allows direct seeding , in bare soil or in soil covered with residues , without prior plowing and preparation of the seedbed Residues protect the soil surface from erosion, improve its organic matter content, reduce evaporation and improve water infiltration, thus increasing the amount of moisture usable by the crop , In particular, it reduces, in the long term, the effects of water deficit and the costs of setting up the crop . It also protects the soil, improves crop performance and reduces carbon dioxide emissions (Mrabet, 2011). The objective of our work is to make a comparative study of the evolution of a soft wheat crop with respect to its conduct in DS versus its conduct in CT , under the semi-arid conditions of the Mostaganem region (Algeria) through morpho-phenological parameters and yield and its components