. Sutapradja, H. 2008.The Effect of Planting Dintance and Seed Size on the Growth and Yield of Granola Potato Variety for Seed Production. This experiment was conducted at Indonesian Vegetable Research Institute with the altitude of 1,250 m asl from June until September 2005. The experiment used a randomized block design with 6 treatments and 4 replications. The treatments were (a) seed size <2.5 g with spacing of 80x15 cm, (b) seed size <2.5 g. with spacing of 80x30 cm, (c) seed size 2.6-5 g with spacing of 80x15 cm, (d) seed size 2.6-5 g with spacing of 80x30 cm, (e) seed size >5.1 g with spacing of 80x15 cm, and (f) seed size >5.1 g with spacing of 80x30 cm. The results indicated that planting distance and size of seed significantly affect the growth and tuber yield of potato for seed production. Planting distance of 80x30 cm and seed size <2.5 g gave the better yield of potato seed compare with others.