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Comparison of Conventional and UNR Cotton Production Systems

Michael J. Bader and Stanley Culpepper


ABSTRACT

Recent studies involving ultra narrow row (UNR) cotton production has indicated that UNR cotton can be grown successfully in Georgia. Yields have been comparable or greater when compared to conventional wide row cotton. Exactly if and where a UNR cotton production system is feasible is still under scrutiny. Field demonstrations were conducted in 2000 and 2001 to obtain more information to compare UNR cotton to wide row cotton. None of the yield comparisons were statistically different at the 0.05 percent level. In 2000, non-irrigated UNR cotton out yielded the conventional cotton by 71 pounds of lint per acre. In 2001, UNR cotton out yielded conventional cotton by 179 pounds of lint per acre. UNR cotton out yielded conventional cotton by 86 pounds of lint per acre in one of the irrigated fields. Conventional cotton out yielded UNR cotton in the other irrigated field. One general observation about where UNR cotton may fit is in a double crop situation or a non-irrigated field that has a low yield potential. The non-irrigated fields in the study were fortunate to have received adequate rainfall to make excellent yields. A growing season which has a short period of rainfall may favor UNR cotton. This could be due to the ability of UNR cotton to set more fruit in a shorter period of time.





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Document last modified May 20, 2002