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Seasonal Soil and Foliar Nutrient Concentrations, and Fruit Quality in a Pesticide-Free Pear Orchard as Affected by Seeding Timing and Method of Cover Crops

녹비작물의 파종시기와 방법이 무농약 배과원의 시기별 토양화학성과 엽내 무기성분, 과실품질에 미치는 영향

  • Lim, Kyeong-Ho (Pear Research Station, National Institute of Horticultural & Herbal Science) ;
  • Choi, Jin-Ho (Pear Research Station, National Institute of Horticultural & Herbal Science) ;
  • Kim, Wol-Soo (Department of Horticulture, Chonnam National University) ;
  • Kim, Hyun-Ji (Environmentally-Friendly Research Center, Jeollanam-do Agricultural Research & Extension Services) ;
  • Song, Jang-Hoon (Pear Research Station, National Institute of Horticultural & Herbal Science) ;
  • Cho, Young-Sik (Pear Research Station, National Institute of Horticultural & Herbal Science) ;
  • Yim, Sun-Hee (Pear Research Station, National Institute of Horticultural & Herbal Science) ;
  • Jung, Seok-Kyu (Department of Floriculture, Catholic University of Daegu) ;
  • Choi, Hyun-Sug (Department of Floriculture, Catholic University of Daegu)
  • 임경호 (국립원예특작과학원 배시험장) ;
  • 최진호 (국립원예특작과학원 배시험장) ;
  • 김월수 (전남대학교 원예학과) ;
  • 김현지 (전남농업기술원 친환경연구소) ;
  • 송장훈 (국립원예특작과학원 배시험장) ;
  • 조영식 (국립원예특작과학원 배시험장) ;
  • 임순희 (국립원예특작과학원 배시험장) ;
  • 정석규 (대구가톨릭대학교 화훼원예학과) ;
  • 최현석 (대구가톨릭대학교 화훼원예학과)
  • Received : 2013.10.31
  • Accepted : 2014.02.24
  • Published : 2014.03.31

Abstract

BACKGROUND: This study was conducted to investigate the effects of seeding timing and method of rye and/or hairy vetch on seasonal soil and foliar nutrient concentrations as well as fruit quality in a pesticide-free pear orchard. METHODS AND RESULTS: The treatments included as followed: single seeding of rye in September (Sep-Mono), November (Nov-Mono), and January (Jan-Mono), or mix seeding of rye+hairy vetch in November (Nov-Mix) and January (Jan-Mix), or sod culture as a control. Cover crops or vegetation was mown and mulched on the soil surface in April and May for two years. Nov-Mix treatment produced the highest dry matter weight of $12,070kg\;ha^{-1}$, with the lowest dry matter weight for sod culture ($6,520kg\;ha^{-1}$), following Jan-Mix ($7,030kg\;ha^{-1}$). Nov-Mix treatments increased potential amount of N, P, and K from the raw materials of the cover crops as well as improved soil physical properties. Nov-Mix treatments overall elevated soil pH, EC, organic matter, and $P_2O_5$ in May compared to other cover crop treatments or sod culture. The difference of the seasonal nutrient concentrations in leaves or fruit qualities were not consistently occurred amongst treatments. CONCLUSION: Nov-Mix treatments showed playing role in a substitute of a chemical fertilizer. Delayed seeding of cover crops such as Jan-Mix did not increase the potential dry matter production due to the short growing period, and the seeding time would affect the dry matter production of cover crops.

Keywords

References

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