Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Effect of Air Humidity and Water Content of Medium on the Growth and Physiological Disorder of Paprika in Summer Hydroponics

여름철 착색단고추 수경재배 시 공중습도 및 배지함수량이 생육 및 과실의 생리장해에 미치는 영향

  • 이한철 (국립특작원예과학원 시설원예시험장) ;
  • 서태철 (국립특작원예과학원 시설원예시험장) ;
  • 최경이 (국립특작원예과학원 시설원예시험장) ;
  • 노미영 (국립특작원예과학원 시설원예시험장) ;
  • 조명환 (국립특작원예과학원 시설원예시험장)
  • Received : 2010.10.18
  • Accepted : 2010.12.23
  • Published : 2010.12.31
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Abstract

This study was carried out to investigate the effect of air humidity and water content of medium on the growth and physiological disorder of paprika in summer hydroponics. Treatments were composed of air humidity of control (over 90%) and dehumidification (low 90%) and water content of 80% and 50%. Time domain reflectometry (TDR) sensors and dehumidifier were used in a drip irrigation system and control system of air humidity, respectively. The early growth of paprika was not affected by air humidity but increased by high water content (80%) of medium. Mean fruit weight was reduced at high air humidity and low water content (50%) of medium, but the fruit number per plant and yield were increased at low air humidity. The incidence of brown fruit stem increased with increasing air humidity and water content of medium. Rate of blossom end rot increased in the low water content medium compared with the high water content medium. The nitrogen (N) was higher content in brown fruit stem than normal stem, but calcium (Ca) was lower.

본 연구에서는 여름철에 착색단고추재배가 평지에서 가능한 지를 검토하고 시설 내 야간의 공중습도와 배지 함수량이 생육과 과실의 병무름증과 배꼽썩음과의 발생에 미치는 영향을 조사코자 하였다. 제습 처리구는 야간의 습도가 85% 내외를 유지하였으나 제습을 하지 않은 관행구는 90% 내외로 유지되었다. 초장, 주경장 등 초기생육은 공중습도처리에서는 차이가 없었으나 배지함수량에서 유의차를 보여 배지함수량이 많은 80% 처리구가 길었다. 과실의 무게는 공중습도가 낮고 배지 수분함량이 많은 처리구에서 무거웠으며 스페셜 품종이 쿠프라 품종보다 무거웠다. 주당 착과수는 과실중과 달리 공중습도가 낮고 배지함수량이 낮은 처리구에서 많았으며 그 결과 10a당 상품수량이 증가하였다. 과병 무름증은 스페셜 및 쿠프라 두 품종 모두 실내습도가 낮은 처리구 및 배지함수량이 적은 처리구에서 발생율이 감소하였다. 반면 스페셜 및 쿠퍼라 두 품종 모두 배꼽썩음과 발생율은 공중습도과 높고 배지내 수분함량이 많은 처리구에서 낮게 나타나 과병무름증 발생과 상반되는 양상을 보였다. 스페셜과 쿠프라 두 품종 모두 정상과에 비해 과병무름증 발생과의 과병에서 질소의 함량은 많고 칼슘의 함량이 적었다. 이러한 결과에서 여름철 착색단고추 여름철재배시 생산성을 더 높이기 위해서는 제습기 등을 이용해서 야간의 공중습도를 낮추고, 배지 수분함량을 적게 관리하는 것이 유리한 것으로 나타났다.

Keywords

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