Potato Extension


Andy Robinson

Potato Extension Agronomist


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Utilization of NAA as a Seed Treatment to Control Stem Number in Russet Burbank

Altering the number of stems can be an effective way to control tuber set and size of physiologically old seed. This study examined the effect of 1-naphtheneacetic acid (NAA) treatments on seed and in-row seed spacing. Russet Burbank average stem number was reduced from 3.1 to 2.5 when 0.3 fl oz/ton of NAA was applied on seed prior to planting. Decreasing in-row seed spacing by 2 inches and applying NAA caused the average stem number to be the same as the untreated check. NAA can manipulate stem number to allow growers to plant a higher density of seed per acre.
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