I need correction please Comparative study of the evolution of soft wheat (Triticum aestivum L.) , installed in direct seeding and conventional plowing Summary , The problem of cereal production in Algeria arouses (raises ) three determining factors : climatic, edaphic and agronomic To face ( square up to ) this situation, the conservation agriculture offers an opportunity to reverse this alarming trend In order to achieve a productive and sustainable production system, a common wheat crop has been established to monitor their behavior with respect to two cropping systems (direct seeding (SD) and conventional tillage) LC , for this purpose, two experiments were carried out between 2012 and 2014 at the site of Mazagran - Mostaganem (West of Algeria). The obtained results led to the conclusion that LC had positive effects on the wheat crop in terms of early date of emergence and that of the maturity , in number of tillers / m², in produced aerial biomass , and in particular on the yield and its components with the exception of the number of cobs / m² and in ( by ) weight of one thousand grains On the other hand the SD is dominant with a slight difference in weight of one thousand grains. Key words: Soft wheat, direct seeding, conventional plowing ( tillage )