Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Growth and Fruit Characteristics of Highbush Blueberry by Mulching Materials

멀칭 자재가 하이부쉬블루베리 생육 및 과실 특성에 미치는 영향

  • 김수진 (국립원예특작과학원 과수과) ;
  • 이동훈 (국립원예특작과학원 과수과) ;
  • 허윤영 (국립원예특작과학원 과수과) ;
  • 임동준 (국립원예특작과학원 과수과) ;
  • 박서준 (국립원예특작과학원 과수과) ;
  • 정성민 (국립원예특작과학원 기획조정과) ;
  • 정경호 (농촌진흥청 연구정책국)
  • Received : 2019.09.23
  • Accepted : 2020.04.01
  • Published : 2020.05.31
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Abstract

Highbush blueberries (Vaccinium corymbosum), 'Duke', 'Bluecrop', and 'Elliott', were applied with ground cover mulch systems to evaluate bush growth and fruit characteristics. Soil temperature variation was lower in the woodchip mulching plot. Therefore, CEC, soil pH, phosphate, mineral ions were not significantly different among mulching materials. The number of main stem was higher in woodchip > sawdust > rice husk > plastic film mulching plot, respectively. Total shoot number was also higher in organic mulching plots than in plastic film plot. However, total shoot number was not significantly different among the organic mulching plots. Fruit weight was the highest in the woodchip mulching plot of all blueberry cultivars, however, soluble sugar content, organic acidity, fruit firmness were not significantly different in mulching materials. Yield was higher in organic mulching plots than in plastic film plot in all blueberry cultivars. Especially, yield per shrub of woodchip plots was the highest about 3.6 kg in 'Duke', 2.7 kg in 'Bluecrop', and 2.6 kg in 'Elliott'. Furthermore, correlation of main stem number and yield was highly significant (r2 = 0.8413). Therefore, woodchip mulching is expected to be an eco-friendly method to increase the number of stems and the yield of blueberries.

국내 하이부쉬블루베리의 대표 세 품종을 대상으로 멀칭 재료에 따라 토양 환경, 수체생육, 과실 특성 및 잡초 발생 등에 어떠한 효과를 보이는지 알아보고자 실험을 수행하였다. 토양 온도는 우드칩 멀칭 처리구에서 변화폭이 가장 적었으며 CEC, 인산, 치환성 양이온 농도 또한 처리구에 따른 차이가 나타나지는 않았다. 우드칩 처리구에서 줄기 수 증가가 가장 높게 나타났으며 톱밥, 왕겨, 부직포 순으로 나타났다. 총 신초 수는 흡지 수와 줄기 수와 마찬가지로 유기물 멀칭처리구와 부직포 처리구간의 유의한 차이가 있었으나 유기물 멀칭 재료 간에는 차이를 보이지 않았다. 신초의 굵기는 처리 간에 차이가 나타나지 않았다. 과실 특성을 조사한 결과 품종에 상관없이 우드칩 멀칭 처리구에서 과중이 가장 높게 나타났으며 그 외 가용성고형물 함량, 산도, 경도는 유의한 차이를 보이지 않았다. 수확량은 품종에 상관없이 유기물 처리구에서 높게 나타났으며 유기물 처리간에는 우드칩 처리구에서 가장 높게 나타나 주당 수확량은 Duke 3.6, Bluecrop 2.7, Elliott 품종의 경우 2.6 kg였다. 블루베리의 줄기 수와 수확량과의 상관관계를 조사한 결과 r2 값이 0.8413으로 고도로 유의한 상관관계를 보였다. 따라서 과원에 우드칩으로 멀칭하는 것이 블루베리의 안정적인 생산과 환경친화적인 농업을 실천하는 데 도움이 될 것으로 판단된다.

Keywords

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