Ahmad Naderi - Agriculture and Natural Resource Research Center of Khuzestan , Iran
Fatemeh Nouraki - Islamic Azad University, Science and Research Branch, Ahvaz,and Payame Noor University, Iran
Hassan Rahmany - Department of Agriculture Payame Noor University, P.O.B. ۱۹۳۹۵-۳۶۹۷, Tehran, Iran

Conservation tillage is recommended as the one of the main factors in sustainable agriculture. It has been increased in past years. Conservation tillage has many environmental benefits such as(1) improving organic matter content and soil aggregation; (2) reduced soil temperature and lack of germination(3) root and plant diseases; (4) increased soil density/compaction but potential problems in this system that limited crop yield stability are reduced soil temperature and lack of germination; , root and plant diseases; and increased soil density/compaction is going to be a challengeable issue. To identify the effects of conservation tillage on crop yield many papers were reviewed. . Results showed that a usefulness effect of conservation tillage was higher than its disadvantages factors. In this paper we focused disadvantageous factors of conservation tillage. Furthermore conservation tillage recommended for achieving to sustainable agriculture

Conservation tillage, Challenges, Crop Yield Stability