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연구보문 : 토양환경; 녹비작물의 파종시기와 방법이 무농약 배과원의 시기별 토양화학성과 엽내 무기성분, 과실품질에 미치는 영향
임경호 ( Kyeong Ho Lim ),최진호 ( Jin Ho Choi ),김월수 ( Wol Soo Kim ),김현지 ( Hyun Ji Kim ),송장훈 ( Jang Hoon Song ),조영식 ( Young Sik Cho ),임순희 ( Sun Hee Yim ),정석규 ( Seok Kyu Jung ),최현석 ( Hyun Sug Choi ) 한국환경농학회 2014 한국환경농학회지 Vol.33 No.1
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 12,070 kg ha-1, with the lowest dry matter weight for sod culture (6,520 kg ha-1), following Jan-Mix (7,030 kg 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 P2O5 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.
유기과수 포장에 자생하는 월년생 초종들의 피복작물로서 평가를 위한 Biomass와 주요 양분공급 잠재능 조사
임경호,최현석,권오도,강삼석,임순희,김윤경,이한찬,정석규,Lim, Kyeong-Ho,Choi, Hyun-Sug,Kwon, Oh-Do,Kang, Sam-Seok,Yim, Sun-Hee,Kim, Yoon-Kyeong,Lee, Han-Chan,Jung, Seok-Kyu 한국유기농업학회 2012 韓國有機農業學會誌 Vol.20 No.2
유기과원에서 자생하는 겨울나기 한해살이 초종을 조사하여 과수에 양분공급을 할 수 있는 유망한 녹비자원을 선정하기 위해서 2009년에 수행되었다. 전남지역에 위치한 유기과원 총 13곳을 선정하여 4월과 6월에 자생하는 초종을 조사하였다. 건물중은 4월에 쥐보리가 6월에는 참새귀리가 가장 높았다. 초종별 질소와 칼리의 토양 환원량은 4월에는 쥐보리와 새완두 살갈퀴가 높았고 6월에는 참새귀리가 가장 높게 나타났다. 본 시험에서는 두과 작물인 새완두와 살갈퀴가 토양에 충분한 양의 양분을 환원할 수 있는 유망한 녹비자원으로 판단되었다. 인산은 초종에 상관없이 10~15년생의 과일나무가 생장하기 위해 필요한 수준 이하를 나타내어 추가의 외부 공급이 필요하였다. This study was conducted to select promising green manure crops, providing sufficient amount of nutrients for satisfying fruit tree growth, with the overwintering cover crops grown in organic orchards in 2009. The cover covers were investigated in 13 organic orchards in Chonnam province in April and June. The dry matter in cover crops observed in April and June was the highest for Lolium multiflorum Lam. and Bromus japonicus Thunb., respectively. Total N and K production in April was the highest for Lolium multiflorum Lam, Vicia hirsuta (L.) S. F. Gray and Vicia angustifolia var. segetilis (Thuill.) K. Koch., respectively, with Bromus japonicus Thunb. in June. This study showed that the leguminous crops, Vicia hirsuta (L.) and Vicia angustifolia, would be the prospective cover covers as the both crops provided sufficient amount of N and $K_2O$ into the soil. Amount of $P_2O_5$ producing from all cover crops provided less than nutrient levels than those of recommended nutrient requirement for satisfying 10- to 15-year-old fruit tree growth.