Genetically developed B.T. Cotton increase the productivity of the cotton in last decade. Most of the farmer in our country and the world are producing B.T. Cotton and supplying to the Cotton Ginnery. As the production increases the conventional methods of Ginnery [1] are replaced by automatic Ginnery. This research paper discusses conventional ginnery using pre-cleaner for removing the contaminants like trash, stem, leaves, immature locks etc.which is not being used by Ginners. Present scenario reveals that most of the handling operations are replaced by mechanized conveying, which may probably clean the cotton in various stages of transportation of cotton. The drawbacks in system are that the crop producer or farmer is not fetching the reasonable price from the ginners. If farmer installed pre cleaner at storage place either in village or at farm can fetch better price. Further this papers also discusses the details of recent trend and economic feasibility of cotton pre-cleaner in details.

1. W.S.Anthony, W.D. Mayfield, Managing Editors, 1994, Cotton Ginners Handbook, United States Department of Agriculture, Agricultural Research Service, Agricultural Handbook, No. 503.
2. The Classification of Cotton, Agricultural Handbook 566, United States Department of Agriculture, Agricultural Marketing Service, Washington, D.C. (Revised January 1999).
3. P.G. Patil, S.K. Shukla, 2008. "Effect of Spiked Cylinder and Saw band Pre-Cleaner on Trash Removal Efficiency and Properties of Cotton.", Journal of Agriculture Engineering 45(2),66-70.
4. G.F. Williams,1997,"Gin process monitoring and control The next generation", Proceedings of the Belt wide Cotton Conferences, Vol.1,387-390.
5. S.J.Ray, 2008, "Alternative Configurations in a Cylinder-Type Cleaner for Seed Cotton", American Society of Agriculture and Biological Engineers,Vol.22(5),643-649.
6. Sharma Vijay, 1998, "Cotton Production in India: Performance, Prospects and Constraints", Productivity Journal, Vol. 39, 483-498.
7. Frank X Werber, Everet E.,1994 "Textile Industry Needs", Cotton Ginners Handbook, USDA, 293.
8. Arthur L. Roberts et.al.,1948 " Charges for Ginning Cotton", USAD, Agriculture Marketing Service.1-3.
9. Q.A.Cleveland, Jr., William D. Mayfield,1994, " Economics of Gin Operation", Cotton Ginner's Handbook, USDA.
10. Indra Doraiswamy, P.Chellamani,1993 "Cotton Ginning", The Textile Institute, Manchester,UK, Vol.24,No.2, 1-28.

B.t. Cotton Pre-cleaner Ginnery Trash