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Abstract

Interest in wide row cotton production has become prevalent, but little data is available on cotton growth, development, and yield in these systems. Experiments were conducted in 2021-2022 in Tifton, GA to determine the impacts of row spacing (91, 122, 152, and 183 cm) on cotton growth, development, and yield. Crop growth (plant heights, total mainstem nodes, cutout date, or maturity) did not differ across row spacings, but canopy closure was hastened in 91 cm row spacings. Wide row spacings did not reduce boll rot/hard lock. Lint yield was highest in 91 cm row spacings, with significant reductions noted in 183 cm row spacings. Although more bolls plant-1 were produced in 183 cm row spacings, the standard 91 cm spacings produced more bolls ha-1, resulting in higher yields. Overall, 91 cm row spacings give Georgia growers maximum flexibility with respect to rotational crops and maximizes lint yield in cotton.

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