Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Processing Quality of Potato (Solanum tuberosum L.) Tubers as Influenced by Soil and Climatic Conditions

감자의 가공품질에 영향을 미치는 토양 및 기상조건

  • Jeong, Jin-Cheol (Highland Crop Research Division, National Alpine Agricultural Experiment Station, RDA) ;
  • Yun, Yeong-Ho (Highland Crop Research Division, National Alpine Agricultural Experiment Station, RDA) ;
  • Chang, Dong-Chil (Highland Crop Research Division, National Alpine Agricultural Experiment Station, RDA) ;
  • Park, Chun-Soo (Highland Crop Research Division, National Alpine Agricultural Experiment Station, RDA) ;
  • Kim, Sung-Yeol (Highland Crop Research Division, National Alpine Agricultural Experiment Station, RDA)
  • 정진철 (고령지농업시험장 산지작물과) ;
  • 윤영호 (고령지농업시험장 산지작물과) ;
  • 장동칠 (고령지농업시험장 산지작물과) ;
  • 박천수 (고령지농업시험장 산지작물과) ;
  • 김숭열 (고령지농업시험장 산지작물과)
  • Published : 2003.12.31
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Abstract

In order to examine the difference in processing quality of potato tubers among localities, chemical properties of soils were analyzed and climatic conditions were investigated. Potatoes (Solanum tuberosum L.) were grown at seven localities of Korea during two years from 1994 to 1995. Soil samples and tubers were obtained from 2 to 3 commercial farms per locality with 10 days interval from 70 days before harvesting. As the result of that, higher correlation in processing quality was found with organic material content among soil conditions. On the climatic conditions, minimum temperature and sunshine hours during the period from 30 to 11 days before harvesting exhibited highly significant negative correlations with all quality parameters except reducing sugar content. Additionally, regression equations based on the observed level of these factors showed the relatively high coefficients of determination for dry matter content and chip color. To produce higher quality potatoes for processing, therefore, climatic conditions such as minimum temperature and sunshine hour and soil condition such as organic matter content have to be considered before the selection of areas or fields.

감자의 가공품질에 영향을 미치는 토양 및 기상조건을 구명하기 위하여 국내 주요 감자재배 지역 7곳에 1994년부터 1995년까지 2년에 걸쳐 각 지역별 $2{\sim}3$개 농가에서 감자를 재배하였으며, 각 재배포장의 토양시료 채취 및 괴경을 수확하였다. 지역별 감자 괴경의 가공품질 차이의 원인을 구명키 위하여 토양분석과 수확일 기준으로 수확전 $70{\sim}10$일 사이의 기상조건을 10일 간격으로 조사하였으며, 수확된 괴경의 가공품질과 이들 요인과의 상관계수를 계산하였다. 시험결과, 감자의 가공품질은 토양의 화학적 특성 중에서 토양내 유기물 함량과 높은 상관계수를 보였다. 또한 기상조건과 관련하여 수확전 $30{\sim}10$일 사이의 최저온도가 낮으며, 일조시간이 많을 수록 감자의 가공품질이 향상되었다. 또한 이들 상관관계가 높은 요인들을 대상으로 가공품질 요인에 대한 다중회귀식을 구한 결과 괴경건물율과 칩색도는 비교적 높은 결정계수를 보여주었다. 따라서 우리나라에서 고품질의 가공원료 생산을 위한 적지 선정에 있어 토양중의 유기물 함량과 그 지역의 최저온도 및 일조시간 등이 고려되어야 할 것으로 생각된다.

Keywords

References

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