Abstract
Several in-row plant spacings (15, 23, 31, and 38 cm) of `Beauregard' sweetpotato [Ipomoea batatas (L) Lam.] were evaluated to determine which spacing produced higher yields under North Carolina growing conditions.The 15 cm spacing (the closest spacing evaluated) gave the highest root yields.With closer plant spacings, the yields of No. 1 grade roots increased compared to wider plant spacings.The No. 1 grade is the most desired and gives the grower the greatest monetary return.Jumbo grade root production increased with wider plant spacings due to less plant-to-plant competition compared to those at closer spacings.In most cases, the widest spacing tested for `Beauregard' (38 cm) produced lower yields (except for jumbo grade yields) to the other spacings tested.
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