Excerpts from the report: Industry has developed two methods of increasing the moisture content of cotton during ginning—the spray method and the vapor method. In the spray method, a mist of water is sprayed on the seed cotton and the cotton held until the moisture is absorbed by the fibers before it is metered into the gin stands. In the vapor method, the seed cotton is held in warm air of very high relative humidity until the moisture is absorbed by the fibers before being metered into the gin stands. The objectives of this research were to determine the effects on the ginning and spinning performance and fiber and yarn quality of the two methods of seed cotton moisture conditioning by adding or restoring moisture to dry fibers after cleaning but before ginning.