Row-Spacing Effects on Yield and Earliness

E. D. Vories, J.S. McConnell and R.E. Glover


A research project was conducted in 1992 and 1993 to investigate the effects of inter-row spacing on Arkansas cotton (Gossypium hirsutum L.) production. The project, conducted under the Cotton Incorporated State Support Program, contained multiple locations and cultivars and addressed many parameters of cotton production. This report deals with yield and earliness for one cultivar (DES 119) at one location (University of Arkansas Northeast Research and Extension Center, Keiser, AR).

Cotton was produced on a Sharkey silty clay on 30- and 38-inch row spacings under irrigated and nonirrigated conditions. Sequential hand harvests and boll counts were made during the boll maturation period. The boll counts were used to estimate the % open bolls at each harvest date. Yield differences for both mid and late October harvests favored the 38-inch row spacing. Significant irrigation effects for yield were observed in a dry year (1993) but not in a wetter year (1992). No significant differences in maturity (as measured by % open bolls) associated with the irrigation treatments were observed. A significant row-spacing effect was observed for the final harvest in 1992, with a higher % open bolls associated with the 38-inch row spacing.

Reprinted from Proceedings of the 1994 Beltwide Cotton Conferences pp. 1516 - 1517
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998