As a method to reduce the sue of agricultural chemicals mulching with thin plastic films has been commonly practised for many years. Although use of plastic films for mulching is very effective in preventing herb growth it is almost impossible to remove all of the plastic films from the agricultural lands and the remaining films eventually contaminate the soils. Therefore, it is very imperative to develop a mulching material that decomposes completely to prevent soil pollution problems and to enhance the competitive edge of domestic agriculture. In this paper the possibilities of using strength resins for improving strength properties of mulch papers made from old corrugated containers were examined. Also mulch papers have been produced and applied for practical farming in upland as well as paddy field. Result showed that the usage of 0.7% of wet strength additives was effective for wet and dry strength of mulch paper. Changes of various process parameters including freeness, cationic demand, one pass retention, nitrogen content, etc. that occurred during trial production of mulch paper have been examined and discussed . It was found that paper mulching was very effective for weed control both in upland field and paddy filed.