1Department of Vegetable Crops, C.C.S.H.A.U., Hisar-125 004, (Haryana).
Effect of tuber sizes (61.1 and 156.8 g) and plant growth substances (GA3–2 ppm, GA3–2 ppm + thiourea 1% and control) was studied on number and size of sprouts at different flushes. Sprouts were detached thrice (30th September, 16th October and 4th November) from the same tuber. First (5.3) and second (5.5) flushes gave higher number of sprouts as compared with third flush (3.7). Although number of sprouts per tuber were significantly higher in over size tubers (6.0/tuber/flush) when compared with seed size tubers (3.7/tuber/flush), number of sprouts on per unit weight basis were higher in seed size tubers (186.7/kg) as compared to over size tubers (114.4/kg). Plant growth substances did not influence number of sprouts and sprout size. Sprout weight and diameter was highest in case of first flush and lowest in case of third flush. Tuber sizes did not influence sprout size.
