Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Characteristics of Root Media Moisture in Various Irrigation Control Methods for Tomato Perlite Bag Culture

토마토 펄라이트 자루재배에서의 급액제어 방법에 따른 배지의 수분변화

  • Sim Sang-Youn (Gyeonggi Province Agricultural Research & Extension Services) ;
  • Lee Su-Yeon (Gyeonggi Province Agricultural Research & Extension Services) ;
  • Lee Sang-Woo (Gyeonggi Province Agricultural Research & Extension Services) ;
  • Seo Myeong-Whoon (Gyeonggi Province Agricultural Research & Extension Services) ;
  • Lim Jae-Wook (Gyeonggi Province Agricultural Research & Extension Services) ;
  • Kim Soon-Jae (Gyeonggi Province Agricultural Research & Extension Services) ;
  • Kim Young-Shik (Sangmyung University)
  • Published : 2006.09.01
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Abstract

Tomatoes were experimented in perlite bags for various irrigation control methods to elucidate the efficient method for nutrient solution management. The irrigation control methods were for 3 different types such as control by drainage level sensor (PROBE), control by integrated solar radiation (ISR), and control by time clock (Timer). The substrate weight was maintained stably in the proper range in PROBE treatment, regardless of daily solar radiations or growth stages. The bed weights in the treatments of ISR and Timer were changed largely. Growth as well as total yield was the highest in PROBE treatment. There was no difference in soluble solids (Brix %) among the treatments. Consequently, ISR control could be useful only with appropriate timer control and also calibration. Control by drainage level sensor was suggested to be the most satisfactory as irrigation management method.

자루재배에서의 효율적인 급액관리법을 규명하기 위해서, 배액 전극법, Timer법 및 적산일사량법으로 토마토 펄라이트 자루재배를 하였다. 배지의 무게변화는 배액 전극법의 경우 일사량이나 생육단계에 관계없이 일정한 범위 내에서 매우 안정적으로 유지되었다. 반면에 일사량법과 Timer법에서는 일사량과 생육단계 등에 따라 매우 변동이 심해서 안정적인 급액관리로 적합하지 않은 것으로 판단되었다. 총수량은 배액 전극법에서 가장 많았으나, 상품수량은 일사량법 이외에는 차이가 없었고, 당도에도 유의한 차이가 보이지 않았다. 생육은 배액전극법이 가장 좋았고, 일사량법과 Timer법에서 낮았다. 이상의 결과에서, 일사량법은 적절한 Timer 제어를 병행하고, 부단히 보정을 해주어야 안정적인 급액이 가능한 반면 식물의 요구에 수동적으로 대응하는 배액전극법은 급액횟수에 관계없이 안정적인 급액방법으로 나타났다.

Keywords

References

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