Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Effect of the Concentration of Humic Acid on Growth and Yield of Organically Cultivated Hot-Pepper

휴믹산 농도가 유기농 고추의 생육 및 수량에 미치는 영향

  • Kim, Min-Jeong (Organic Agricultural Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Shim, Chang-Ki (Organic Agricultural Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Yong-Ki (Organic Agricultural Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Park, Jong-Ho (Organic Agricultural Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Han, Eun-Jung (Organic Agricultural Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Ko, Byong-Gu (Organic Agricultural Division, National Academy of Agricultural Science, Rural Development Administration)
  • 김민정 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 심창기 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 김용기 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 박종호 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 한은정 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 고병구 (농촌진흥청 국립농업과학원 유기농업과)
  • Received : 2017.02.21
  • Accepted : 2017.03.08
  • Published : 2017.03.30
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Abstract

The purpose of this study was to investigate the effect of humic acid on the germination, the growth and the yield of hot pepper when treated with organic hot pepper seedlings and growing season. The germination rate of 0.05% and 0.1% humic acid was higher than that of untreated, but the germination rates of 0.4% and 1.0% humic acid were 90.0% and 86.7%, respectively, compared with the control treatment (96.7%). At 30 days after transplanting, hot pepper treated with low (0.05%) or high (1.0%) concentration of humic acid decreased the growth of hot pepper seedlings, whereas 0.2% humic acid treatment significantly increased a average height (97.6 cm), leaf number (84.7) and fresh weight ($128.1g\;plant^{-1}$) of hot pepper. After 60 days of treatment with humic acid, the height of hot pepper was significantly longer in 0.2% humic acid. The mean green fruit number of 0.2%, 0.1% and 0.05% humic acid were not significantly different among the treatments, but the mean green pepper number of 0.4% and 1.0% humic acid treatments were the higher with 35.2% and 29.1%, respectively than other treatments. However, the fresh weight of green pepper was found to be $111.5g\;plant^{-1}$ more heavier than the untreated in 0.2% humic acid. The total ($5.8kg\;plant^{-1}$) and average ($1.4kg\;plant^{-1}$) fresh weight of pepper were higher than that of untreated control, except for the 1.0% humic acid treatment after 60 days of soil irrigation. The total weight of hot pepper treated with 0.2% and 0.1% humic acid treatment was $9.3kg\;plant^{-1}$ and $8.6kg\;plant^{-1}$, respectively, which were heavier than the other treatments. The effect of humic acid concentrations on soil microbial populations, pH and EC was investigated. The soil bacterial population density of 0.2% humic acid treatment was 3.5 times higher than that of untreated control soil. As the concentration of humic acid increased from 0.05% to 1.0%, pH and EC of hot pepper grown soil also increased.

본 연구의 목적은 휴믹산을 농도별로 유기농 고추 유묘기와 생육기에 처리하였을 때, 고추의 발아, 생육, 수량에 미치는 영향을 검정하고자 하였다. 0.05%와 0.1% 휴믹산을 상토에 처리하였더니 무처리보다 고추 발아율이 높았으나 0.4%와 1.0% 휴믹산의 발아율은 각각 90.0%와 86.7%로 96.7%의 무처리보다 낮았다. 고추유묘 정식 30일 후, 휴믹산을 0.05%나 1.0%는 무처리에 비해 생육이 감소하였으나 0.2% 휴믹산을 처리한 고추의 평균 초장(97.6 cm), 엽수(84.7개) 및 생체중($128.1g\;plant^{-1}$)이 유의적으로 증가하였다. 휴믹산 토양관주 처리 60일 후, 0.2% 휴믹산 처리구의 고추 초장이 유의적으로 가장 길었다. 0.2%, 0.1%, 0.05% 휴믹산 처리구의 평균 청과수는 처리 간에 유의적인 차이가 없었으나 0.4%와 1.0% 휴믹산 처리구의 평균 청과수가 각각 35.2개와 29.1개로 가장 많았다. 그러나 풋고추의 생체중은 0.2% 휴믹산 처리구가 무처리에 비해 평균 $111.5g\;plant^{-1}$ 더 무거운 것으로 나타났다. 휴믹산 농도별 토양관주 60일 후, 1.0% 휴믹산 처리구를 제외하고 무처리에 비해 고추의 총무게($5.8kg\;plant^{-1}$)와 평균 무게($1.4kg\;plant^{-1}$)가 높은 것으로 나타났으며 0.2%와 0.1% 휴믹산 처리구의 고추 총무게가 각각 $9.3kg\;plant^{-1}$과 $8.6kg\;plant^{-1}$로 다른 처리농도에 비해 많았다. 휴믹산 토양관주 처리에 따른 토양의 세균, pH 및 EC에 미치는 영향을 조사하였더니, 0.2% 휴믹산에서 토양의 세균밀도가 무처리구에 비해 3.5배 더 높게 나타났다. 휴믹산의 농도가 0.05%에서 1.0%로 증가함에 따라 고추재배 토양의 pH와 EC도 증가하는 것으로 나타났다.

Keywords

References

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