ISHS Acta Horticulturae 761: XXVII International Horticultural Congress - IHC2006: International Symposium on Advances in Environmental Control, Automation and Cultivation Systems for Sustainable, High-Quality Crop Production under Protected Cultivation
AEROHYDROPONIC CULTURE SYSTEM FOR SEED POTATO PRODUCTION OF CHIPPING VARIETY 'ATLANTIC' |
| Authors: | D.C. Chang, S.Y. Kim, C.S. Park, Y.B. Lee |
| Keywords: | aerohydroponics, potato, Atlantic, nutrient solution |
| Abstract:
Aerohydroponics was devised to improve the tuber formation of late-maturing potato variety ‘Atlantic’. The principle is to grow plants with their root systems exposed to a nutrient mist. As the root system develops into the bottom of a culture bed, they absorb necessary inorganic ions from the continuously flowing nutrient solution in the bottom of a culture bed. Optimum depth of recirculating nutrient solution in the aerohydroponics was determined to be 3 to 5 cm. Particularly, potato stolons must be allowed to grow in the nutrient solution for at least 20 to 40 days to maximize tuber formation. Growth responses such as shoot fresh and dry weight of the plants grown under the aerohydroponics were not significantly different as compared with that of conventional system, aeroponics. The number of tubers below 20 g weight was greater in the aerohydroponics than in aeroponics, but that of tubers above 20 g weight was not different between the two systems. Although aerohydroponics produced lower average tuber weight (12~15 g) than aeroponics (12~24 g), total tuber yield increased 14 to 23% due to an increasing number of tubers as compared with aeroponics. In conclusion, aerohydroponics was a suitable alternative for seed potato production, particularly for late maturing variety ‘Atlantic’. | |
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