Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effects of Chlorella Culture Solution Using As Midium of Anaerobic Digestate on Early Growth of Italian Ryegrass (Lolium multiflorum L.)

혐기소화처리액을 배지로 이용한 클로렐라 배양액 시용이 이탈리안 라이그라스의 초기생육에 미치는 영향

  • Received : 2016.09.16
  • Accepted : 2016.11.21
  • Published : 2016.12.31
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Abstract

Anaerobic digestion is a collection of naturally occurring processes that convert organic matter and liquid residue, so-called digestate. The use of digestate biofertilizers is one of the important components of integrated nutrient management, as they are renewable sources of plant nutrients for sustainable agriculture. Seeds of Italian ryegrass (Lolium multiflorum L.) were germinated in different concentration of Chlorella in order to investigate it's the effect of Chlorella on growth parameters, seed germination and early growth. The experiment using plug tray was conducted at the green house placed in the Sangji University. The experiment consisted of nine treatments including different concentrations of Chlorella sp. culture solution and non-treated control. The germination percentage at the treatment with 25% Chlorella sp. culture solution was greater than that of control. The 50% concentration of Chlorella sp. culture solution was found to promote a better seedling growth in terms of shoot length, fresh weight and dry weight compared to the anaerobic digestate. Results showed that the best concentration of Chlorella culture solution was achieved by the 50% concentration of Chlorella culture solution treatment. As a conclusion, the application of Chlorella culture solution was found to be able to promote the germination and shoots growth of Italian ryegrass.

본 연구는 가축분뇨 혐기소화처리액과 클로렐라 배양액 시용이 이탈리안 라이그라스의 발아와 초기생육에 미치는 영향을 구명하기 위하여 수행하였다. 처리는 혐기소화처리액과 이를 배지로 활용하여 배양한 클로렐라 배양액의 희석 농도를 각각 25% (v/v), 50% (v/v), 75% (v/v), 100% (v/v)로 처리하였다. 초기생육의 평가를 위한 조사항목으로 발아율, 초장, 엽수, 엽폭, 엽록소함량 (SPAD) 측정, 지상부, 지하부 생체중과 건물중, T/R율, 뿌리길이 등을 조사하였다. 발아율은 클로렐라 배양액 25% 처리구에서 무처리구(지하수) 보다 높은 발아율을 나타내었다. 지상부 생육 특성(초장, 엽장, 엽수 및 엽폭)은 모든 처리구 중에서 클로렐라 배양액 50% 처리구가 가장 높았다. 엽록소 측정값(SPAD)은 무처리구의 30.7에 비해 클로렐라 배양액 50%처리구는 58.7로 가장 높은 수치를 나타내었다. 지상부 생체중은 클로렐라 배양액 처리구가 혐기소화액 보다 높았으며 50% 처리구에서 29.2 g으로 가장 높게 나타났다. 지하부 생체중은 클로렐라 배양액 처리구에서 21~27 g로 혐기소화처리액에 비하여 높았다. T/R율은 혐기소화처리액 처리구에서 0.98~1.04 (평균 0.97)로 클로렐라배양액 처리구의 0.94~1.06 (평균 1.02) 유의한 차이를 나타나지 않았다. 클로렐라 배양액 처리구가 혐기소화처리액 처리구보다 길었다. 이상의 결과에서 이탈리안 라이그라스의 지상부 및 뿌리 생육에 클로렐라 배양액의 초기 생육촉진 효과를 나타내었으며, 클로렐라 배양액의 적정 시용농도는 50%로 보여진다.

Keywords

References

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