Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Evaluation of Tomato Growth-promoting Effect and Mineral Nutrient of Farm-made Liquid Fertilizers

농가 자가제조 유기액비의 토마토 생육 촉진 효과 및 무기영양소 평가

  • 국용인 (순천대학교 한약자원개발학과) ;
  • 윤영범 (순천대학교 한약자원개발학과) ;
  • 장세지 (순천대학교 한약자원개발학과) ;
  • 정장용 (순천대학교 한약자원개발학과) ;
  • 김대선 (순천대학교 한약자원개발학과) ;
  • 김상수 (순천대학교 식물의학과)
  • Received : 2019.03.07
  • Accepted : 2019.05.13
  • Published : 2019.05.31
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Abstract

This study was carried out in order to evaluate the growth promotion effects on tomato crops and to assess the mineral nutrient concentrations of farm-made liquid fertilizers used in organic cultivation in South Korea. We hope that this study will help to develop of a standardized manufacturing technique for these organic liquid fertilizers. We collected 62 farm-made liquid fertilizers made from various raw materials including fish, seaweed, food scraps, plant and crop by-products, and other materials. Two groups of tomato seedlings were treated at different times, one at 20 days and the other at 40 days after sowing. We used both foliar and soil applications. These seedlings were treated using liquid fertilizers at various dilution rates (x1000, x500 and x100). When foliar application was used, seedlings after 20 days had a 20-30% increase in shoot fresh weight with 47-48 fertilizers and seedlings after 40 days had a 20-30% increase in shoot fresh weight with 17-32 fertilizers. When soil application was used, seedlings after 20 days had the same increase in shoot fresh weight with 30-31 fertilizers and seedlings after 40 days also saw the same increase with 6-7 fertilizers. Therefore, our studies showed that application of liquid fertilizers to seedlings 20 days after sowing was most effective and that foliar treatment was more effective than soil treatments. We also observed that the higher the concentrations of fertilizer, particularly when applied twice rather than just once, the higher the rates of growth, which promoted shoot fresh weight more than plant height. Our results imply that mineral nutrients in liquid fertilizers seem to be the probable cause for the growth promotion observed in this study. However, more study is required to determine exactly which mineral nutrients are most effective.

본 연구는 유기재배에서 작물촉진용으로 활용되고 있는 농가 자가 제조 액비에 대한 토마토 생육 효과와 무기영양소를 평가하여 액비의 표준화 제조기술을 개발하는데 기초자료로 활용하고자 수행되었다. 농가 자가 제조 액비 62개 중 생선 액비 14개, 해조류 액비 8개, 음식물 액비 5개, 식물·농작물 액비 23개, 기타 액비 12개로 다양한 원료를 이용하여 제조되었다. 수집 62개 액비를 농도별로 희석하여 파종 후 20일된 토마토 육묘에 처리한 경우 경엽처리의 47~48개와 그리고 토양처리의 30~31개에서 지상부 생체중이 20~30% 증가하였다. 그러나 파종 후 40일된 토마토 육묘에 처리한 경우 경엽처리의 17~32개 및 토양처리의 6~7개에서 지상부 생체중이 20~30% 증가하였다. 따라서 파종 후 40일된 토마토 육묘에 액비를 처리한 경우보다도 20일에 처리한 경우에서, 토양처리보다는 경엽처리에서 토마토 육묘 생육이 더욱 증가하였다. 일반적으로 액비 처리량이 많을수록 토마토 육묘 생육이 증가하였고, 1회 액비처리에 비해 2회 액비처리에서 토마토 육묘 생육이 증진되었다. 또한 액비 처리에 의한 효과는 초장보다는 지상부 생체중에서 더욱 효과적이었다. 선발 액비 10종에 대해 성분을 분석한 결과 다량 및 미량원소 함량은 시료 간 차이가 크지만 농가 자가 제조 액비 처리에 의한 토마토 생육증진은 액비에 존재하는 다량 및 미량원소에 의해서 기인되는 것으로 사료된다.

Keywords

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