Systemic Induction of Sprouting in White Potatoes by Foliar Applications of Gibberellin.

Abstract

Foliar applications of gibberellin four weeks, two weeks, or one week before harvest resulted in sprouting on developing potato tubers at time of harvest. Concentrations of 50, 100 and 500 mg/1 were most effective in the earlier applications. Sprout development ranged from normal to the formation of secondary tubers. The latter were either sessile on the main tuber or at the distal end of elongated sprouts. This effect of early sprouting after foliar sprays suggests the rapid translocation of gibberellin in potato plants.