Changes in Some Quality Properties after Different Storage Periods of Potato Tubers Grown under Well and Deficit Irrigation Conditions

USTUN SAHIN , FATIH M. KIZILOGLU and ILKER ANGIN
Ataturk University, Faculty of Agriculture, Department of Agricultural Structures and Irrigation, 25240, Erzurum, Turkey

Abstract

SAHIN, USTUN, FATIH M. KIZILOGLU and ILKER ANGIN, 2006. Changes in some quality properties after different storage periods of potato tubers grown under well and deficit irrigation conditions. Bulg. J. Agric. Sci., 12: 673-682

In present study, the effect of different storage periods (1, 2, 3 and 4 months) on some quality parameters of potato tubers grown under well and deficit irrigation conditions was examined. Irrigation water levels were selected as 100% (well-irrigated), 80%, 60%, 40%, 20% and 0% (non-irrigated) of usable soil water, respectively. Potato tubers stored under dark including air temperature and relative humidity control units. Increasing water deficit levels significantly increased the specific gravity, dry matter and starch ratio of potato tubers. However, weight loss of potato tubers significantly reduced with water deficit levels. The effects of storage periods on all searched parameters were found significant. Increasing storage period increased the water loss, specific gravity, dry matter, starch ratio and pH, while decreased the vitamin C. Significant increases in water loss increasing storage periods were observed for potato tubers under grown well irrigation conditions according to deficit irrigation conditions. After four month storage periods the weight losses were between 6.87% and 9.29% for non-irrigated and well irrigated conditions, respectively.

Key words: Potato, deficit irrigation, storage, weight loss, specific gravity, vitamin C, pH