Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Response of Yield and Nitrogen Use Efficiency for Garlic on Different Types and Rates of Organic Fertilizer

유기질 비료의 종류 및 시비량이 마늘의 수량과 질소이용효율에 미치는 영향

  • Kim, Seong Heon (National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Hwang, Hyun Young (National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Seo, Hye Bin (National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Rim, Jae Eun (National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Park, Seong Jin (National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Lee, Yun Hae (National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Kim, Myung Sook (National Institute of Agricultural Sciences, Rural Development Administration)
  • 김성헌 (농촌진흥청 국립농업과학원) ;
  • 황현영 (농촌진흥청 국립농업과학원) ;
  • 서혜빈 (농촌진흥청 국립농업과학원) ;
  • 임재은 (농촌진흥청 국립농업과학원) ;
  • 박성진 (농촌진흥청 국립농업과학원) ;
  • 이윤혜 (농촌진흥청 국립농업과학원) ;
  • 김명숙 (농촌진흥청 국립농업과학원)
  • Received : 2019.10.31
  • Accepted : 2019.12.05
  • Published : 2019.12.20
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Abstract

Organic fertilization (OF) was an effective management strategy to improve crop yield and soil fertility. Determination of optimum application rate has been received great interest as a major research field. In this study, we evaluated optimum application level of three different organic fertilizers; mixed expeller compost (MEC), mixed organic fertilizer (MOF) and organic complex fertilizer (OCF), for garlic cultivation. Treatments consisted of MEC, MOF, OCF (50, 100, 150% of standard nitrogen input), inorganic fertilizer(NPK, N-P2O5-K2O : 250-78-128 kg ha-1) and no-fertilization (control). Overall, the yields of garlic under MEC, MOF and OCF 100% (5,337, 5,617 and 5,276 kg ha-1) were higher than under control (4,496 kg ha-1). The 100% of three OFs treatements showed the highest yield and bulb diameter, similar with NPK, while leaf length and bulb height were not significantly different among all treatments. The 150% of three OFs rather decreased yield. The highest nitrogen use efficiency (38.4 and 38.0%) was observed in MOF 100% and OCF100%, which was the most similar with that in NPK (38.8%). As OF application rate increased, pH was decreased, but soil NO3-N and NH4-N were increased. There was no significant difference in soil organic matter (OM), av. P2O5 and Ex. cation values. From these results, 100% application of OFs could be recommended as a suitable input level for garlic cultivation, regardless of organic fertilizer types. Further study might be required to evaluate long-term OF application effect on soil health and crop productivity.

유기질 비료는 작물의 수량과 토양의 비옥도를 증진 시킬 수 있는 주요 농자재로 알려지면서, 유기질 비료의 적정 시비량 설정 연구에 대한 관심이 크게 증대되었다. 이에 본 연구는 유기질 비료의 종류 및 시비량을 달리하여 마늘을 재배한 후 마늘의 생육, 수량, 질소이용효율 및 토양의 화학적 특성 변화를 확인하고 이를 통해 유기질 비료의 적정 시비량을 제시하고자 수행되었다. 본 시험의 처리구는 무처리, NPK처리구(N-P2O5-K2O : 250-78-128 kg ha-1), 유기질 비료 처리구로 설정하였으며, 유기질 비료 처리구는 혼합유박(MEC), 혼합유기질(MOF), 유기복합(OCF)을 각각 질소시비량(250 kg ha-1)을 기준으로 50, 100 및 150%로 설정하여 시비하였다. 마늘의 생육은 혼합유박을 제외한 혼합유기질 및 유기복합비료 100% 처리구에서 NPK처리구와 유사한 경향을 보였으나 50% 및 150% 시비시 생육이 저하되는 것을 확인하였다. 마늘의 질소이용효율은 혼합유기질 및 유기복합비료의 100%처리구에서 각각 38.4% 및 38.0%로 NPK처리구(38.8%)와 가장 유사하게 나타났다. 마늘 수확 후 토양 특성으로 pH는 유기질 비료시비에 따라 낮아졌으나 NO3-N 및 NH4-N의 농도는 시비량이 증가함에 따라 높아지는 경향이었다. 치환성 양이온, Av.P2O5, OM의 함량은 처리구에 따른 유의적인 차이는 없었다. 위의 결과를 통해 마늘 재배 시 혼합유기질 및 유기복합처리구 100% 시비가 가장 효과적이라고 판단되어지나 과다 및 장기 시비에 대한 추가 연구가 필요할 것으로 판단된다.

Keywords

References

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