| Summary: | Research was conducted in two phases field activity and strrope research was rage activity from June to November 2002. Field activity was conducted at the farmer�s field in Pangalengan, Bandung, West Java and storage activity was conducted at Indonesian Vegetable Research Institute, Lembang. The objective of the research was to find out the precise date of harvest for Atlantic variety of potato and the best method of storage in order to maintain the processing quality of the potato tubers. Experimental design used in the field was Randomized Completely Block Design with four replications. The treatment was harvesting date at 70, 80, 90, 100, 110 dsp (days after planting). In the storage activity the design used was Randomized Completely Design with three replications. The treatment was the combination between harvest time and
method of storage (stored 8 days at 10OC, stored 4 days at 10OC and 4 days at room
temperature and stored 8 days at room temperature). The result showed that harvesting at 80 dsp was the best harvesting date, indicated by yield average of 49,25 kg/plot, tuber diameter of 5-7 cm as high as 65,59% (suitable for chips), low mechanical damage of 5,00%, frying damage of 4,5%, water content of tuber as high as 78,05%, very low reduced sugar content of 0,018% and dry matter content of 21,053%. The result of storage activity showed that storage at room temperature 8 days was the best indicated by average of tuber water content of 78,08%, reduced sugar content 0,029 (still suitable for chips), dry matter content 23,431% and the color of fried chips was clear.
Key words : Harvesting date, storage, processing quality of potato tuber
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