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Effects of Expeller Cake Fertilizer on Soil Properties and Tah Tasai Chinese Cabbage Yield in Organic Greenhouse Farm

유기농 시설하우스 토양에서 유박 시용이 토양특성 및 다채 생육에 미치는 영향

  • Kim, Kab-Cheol (Climate Change Response Division, Jeollabuk-do Agricultural Research and Extension Services) ;
  • Ahn, Byung-Koo (Climate Change Response Division, Jeollabuk-do Agricultural Research and Extension Services) ;
  • Ko, Do-Young (Climate Change Response Division, Jeollabuk-do Agricultural Research and Extension Services) ;
  • Kim, Ju (Climate Change Response Division, Jeollabuk-do Agricultural Research and Extension Services) ;
  • Jeong, Seong-Soo (Climate Change Response Division, Jeollabuk-do Agricultural Research and Extension Services)
  • 김갑철 (전라북도농업기술원 기후변화대응과) ;
  • 안병구 (전라북도농업기술원 기후변화대응과) ;
  • 고도영 (전라북도농업기술원 기후변화대응과) ;
  • 김주 (전라북도농업기술원 기후변화대응과) ;
  • 정성수 (전라북도농업기술원 기후변화대응과)
  • Received : 2014.05.29
  • Accepted : 2014.06.19
  • Published : 2014.09.30

Abstract

BACKGROUND: To evaluate the application level of expeller cake fertilizer(ECF), we have investigated soil chemical properties, leaf mineral contents and yield of tah tasai Chinese cabbage in a plastic film greenhouse. METHODS AND RESULTS: Five levels of fertilizer were applied as 0%(ECF 0), 50%(ECF 50), 75%(ECF 75), 100% (ECF 100) and 150%(ECF 150) by base 1,848 kg/ha of ECF. In 2012, tah tasai Chinese cabbage was planted on April 28 in a silt loam soil and harvested on July 12. Commercial yields were measured 10 times from May 10 to July 12. Electrical conductivity (2.24~3.09 dS/m), available $P_2O_5$(484~581 mg/kg) and exchangeable cations($K^+$, $Ca^{2+}$ and $Mg^{2+}$) were tended to increase by the application of ECF. However, the range of those was not significant. The contents of T-N, K, Ca and P of tah tasai Chinese cabbage leaves were 62.2~66.5 g/kg, 44.3~48.7 g/kg, 5.1~5.9 g/kg and 5.6~6.2 g/kg, respectively. The nitrogen utilization rate of tah tasai Chinese cabbage was 39.4~51.6%, and it was decreased with increased application amount of ECF. The yield of tah tasai Chinese cabbage was 9,806 to 12,730 kg/ha on the basis of application amount of ECF and it was not increased in spite of increased ECF. CONCLUSION: The optimum dose of application of ECF for cultivation of tah tasai Chinese cabbage was ranged from 924 kg/ha(as ECF 50) to 1,386 kg/ha(as ECF 75). Environment-friendly and economical amount of applied fertilizer is more important than yield for cultivation of tah tasai Chinese cabbage.

다채 유기농 재배를 위한 유기질비료 유박의 적정시용기준을 마련하고자 시설하우스에서 유박비료를 질소성분량 70 kg/ha(ECF 100)을 기준으로 35(ECF 50), 52.5(ECF 75), 105(ECF 150) kg/ha 수준으로 처리하여 토양환경, 다채 생육 및 수량특성을 조사하였다. 시험 후 토양 pH는 유박 시용전에 비해 낮아졌으며, 유박 시용량에 따른 pH는 5.8~6.0 범위로 차이는 없었다. EC는 2.24~3.09 dS/m, 인산은 484~587 mg/kg로 유박 시용량이 증가할수록 증가하는 경향이었으며, Ca, Mg 등의 양이온도 증가하였으나 유의성은 없었다. 호기성 세균과 방선균, Dehydrogenase 활성은 각각 $22.5{\sim}29.1{\times}10^6$, $22.3{\sim}28.5{\times}10^4$ CFU soil/g, 22.1~25.1 mg/kg 범위이며, 사상균도 시용량에 따라 $33.4{\sim}39.1{\times}10^4$ CFU soil/g 이었으나 유의성은 없었다. 수확기 다채 잎의 T-N은 62.2~66.5 g/kg, K는 44.3~48.7 g/kg, Ca는 5.1~5.9 g/kg, P는 5.9~6.2 g/kg 범위였다. 유박비료의 질소이용율은 39.4~51.6% 이었으며, 유박비료 시용량이 많을수록 질소이용율은 적어지는 경향이었다. 다채의 수량은 유박비료 시용량에 따라 12,431~12,730 kg/ha 범위로 유박비료 시용량이 증가해도 수량증수는 없는 것으로 나타났다. 다채 재배시 최고 수량보다는 경제적이고 친환경적인 양분관리가 필요한데, 본 시험에서는 질소 42 kg/ha 시비량으로 최고수량의 95% 수준인 12,396 kg/ha 얻을 수 있었다.

Keywords

References

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