Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Influence the Fruit Quality of 'Campbell early' Grape according to Inoculation time of Kluyvera sp. CL2

Kluyvera sp. CL2 처리시기가 포도 '캠벨얼리' 과실품질에 미치는 영향

  • 이석호 (충청북도농업기술원 포도연구소) ;
  • 송명규 (충청북도농업기술원 포도연구소) ;
  • 김승덕 (충청북도농업기술원 포도연구소) ;
  • 최원호 (충청북도농업기술원 포도연구소) ;
  • 이윤상 (충청북도농업기술원 포도연구소) ;
  • 홍성택 (충청북도농업기술원 포도연구소) ;
  • 김현주 (충청북도농업기술원 친환경연구과)
  • Received : 2015.03.12
  • Accepted : 2015.06.18
  • Published : 2015.06.30
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Abstract

This study aimed to investigate the effect of inoculation time of phosphate- solubilizing Kluyvera sp. CL2 on fruit quality in cultivation of Campbell early' grape. When phosphate-solubilizing strain was treated at the stone-hardening stage, soil phosphorous increased, exchangeable cations such as K, Ca and Mg also increased. Soil pH was not changed severely due to the soil buffer capacity. Water soluble phosphate concentrations did not decrease heavily up to 20 days after inoculation. When this strain was treated at the berry-softening stage, soil phosphate solubilization ratio was high, cluster weight and sugar content also increased. Both anthocyanin contents and Hunter's values were seen to be significant when inoculation times were stone-hardening stage and berry-softening stage, in particular, increase of Hunter's value a resulted in the improvement of coloration. From these results, we could find that the inoculation of phosphate-solubilizing Kluyvera sp. CL2 at berry-softening stage was the most effective in improvement of fruit productivity and quality in cultivation of'Campbell early' grape.

본 연구에서는 인산가용화 균주인 Kluyvera sp. CL2 처리시기가 과실품질에 미치는 영향을 구명하고자 본 연구를 실시하였다. 토양의 화학성 변화는 경핵기 처리구에서 인산이 가장 많이 증가하였고, K, Ca, Mg도 증가됨을 알 수 있었으며, pH의 변화는 토양 완충능에 의하여 적었다. 인산가용화균 처리에 따른 수용성 인산의 변화는 처리 시부터 20일 까지 효과적이었으며, 과립연화기 처리구부터 인산가용화율이 좋았다. 또한 과립연화기 처리구에서 과방중과 당도가 증가됨을 알 수 있었다. 인산가용화 균주 처리구에서 안토시아닌, 명도, 적색도, 황색도가 경핵기와 과립연화기 처리구에서 유의성을 보였으며, 특히 적색도가 향상되어 착색증진 효과가 있었다. 결론적으로 과실특성과 과실품질을 모두 비교하였을 때 과립연화기에 인산가용화 균주를 투입하는 것이 수량성과 품질면에서 가장 효과적이라고 생각된다.

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