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United States Department of Agriculture

Agricultural Research Service

Research Project: Removing Seed Coat Fragments During Lint Cleaning

Location: Cotton Ginning Research

Project Number: 6235-41000-008-49
Project Type: Reimbursable

Start Date: Jan 01, 2013
End Date: Dec 31, 2013

Objective:
To determine lint cleaner settings or design parameters that will 1) improve the removal of seed coat fragments from the lint, 2) possibly allow separation of small seeds that pass through the gin ribs from the primary waste stream, 3) reduce short fiber content, and 4) reduce nep content. Related to seed coat fragments, this project will also work to document the ability of a cottonseed shear tester to rank varieties in terms of their potential to form seed coat fragments.

Approach:
Some recently released cultivars have fragile seed coat that breaks easily during harvesting and gin processing, and contaminates the lint with fragments of seed coat material. Seed coat fragments cause major problems at the textile mill. Because the cultivars are relatively new, there is no current research on their interactions with harvesting and gin processing. Current research will attempt to remove seed coat fragments, and improve fiber quality attributes such as short fiber content and neps, with newly designed lint cleaner grid bars, a newly designed lint cleaner air-knife grid bar, or newly designed pneumatic fractionator in place of the saw-type lint cleaner. ARS brings to the collaboration scientists and research ginning facilities, while Cotton Incorporated brings scientists and fiber test facilities. Both organizations will gain a better understanding of interactions between seed coat fragments and gin processing. It is hoped that this research will provide domestic and international textile mills with a better quality fiber.

Last Modified: 10/1/2014
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