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http://dx.doi.org/10.7740/kjcs.2012.57.4.418

Effects of Altitude and Planting Time on Tuber Bulking of Potato  

Kim, Chung-Guk (National Institute of Crop Science, RDA)
Ok, Hyun-Chung (Rural Development Administration)
Jeong, Jin-Chol (National Institute of Crop Science, RDA)
Hur, On-Sook (National Academy of Agricultural Science, RDA)
Seo, Jong-Ho (National Institute of Crop Science, RDA)
Jeong, Kwang-Ho (National Institute of Crop Science, RDA)
Kim, Si-Ju (National Institute of Crop Science, RDA)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.57, no.4, 2012 , pp. 418-423 More about this Journal
Abstract
Field experiments were carried out to improve the cultural practice of potato by analysing its tuberization patterns. Tuberization patterns affected by different altitudes was analyzed at two potato cultivation regions, Jinbu (600 m) and Daegwallyung (800 m) using two potato cultivars, 'Superior' and 'Atlantic'. To analyse tuberization patterns affected by different planting time, seed potatoes were planted at every 10 days from April 19 to May 19 in Daegwallyung. Total dry weight was greater in plant grown at the altitude of 800 m than 600 m during the entire growth period and the highest increase was observed at the early growth period, July 6, comparing to other growth period. The total dry weight was the greatest at 110~112 days after planting (DAP) at the altitude of 800 m and 108~111 DAP at 600 m. There was no significant differences between altitudes and between cultivars. Tuber dry weight per plant at the altitude of 600 m was lower than 800 m on July 6 (58 DAP), but it increased rapidly from July 21 (73 DAP). At both altitudes, the increase of tuber dry weight per plant from July 6 to August 8 was higher than the other growth period. The time of growth period at which tuber dry weight per plant was the highest was similar at both altitudes that was 118~125 DAP at the altitude 800 m and 118~124 DAP at the altitude 600 m. Dry weight per tuber at the altitude 800m was higher than 600 m due to the number of tubers per plant. A higher increase of crop growth rate (CGR) was shown at the altitude 600 m on July 6 (58 DAP), comparing to at 800 m. The highest tuber dry weight per plant of each cultivar was shown when the planting time was April 29 for 'Superior' and was April 19 for 'Atlantic'. Both the tuber dry weight of plant and the total dry weight were lower at a later planting time. Dry weight per tuber increased quickly during the period between June 30 to August 8. Tuberization period was shortened as the planting time was delayed.
Keywords
potato; tuberization response; altitude; planting time;
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Times Cited By KSCI : 2  (Citation Analysis)
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