• Journal of Bio-Environment Control
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• v.19 no.4
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• pp.343-350
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• 2010

This study was conducted to investigate the effect of harvest seasons on quality and microbial population at different steps of production chain of fresh-cut iceberg lettuce. Iceberg lettuces harvested in May, June, July, October, and December were processed following industrial practices, and stored at $5^{\circ}C$ for 9 days. For microbial measurement, samples were taken from each of the following steps: harvest, transport, pretreatment, cutting, 1st-washing, 2nd-washing, and day 3, 6, and 9 of storage. Iceberg lettuce cultivated in protect house and harvested in May and October showed higher $CO_2$ levels in the packages and electrolyte leakages than lettuce harvested in June, July and December. Microbial population of raw materials harvested in July was highest (6.76 log), and microbial growth rate during storage was highest in samples harvested in May. Lettuce harvested in June had better quality and microbial safety compared to other lettuces. Although lettuce harvested in October and December had less microbial population in either raw materials or processed products, those samples had inferior quality due to off-odor development and severe browning. Therefore, it is required to maintain quality and ensure microbial safety to distribute fresh-cut lettuce with high quality and safety throughout the year.

• Journal of Bio-Environment Control
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• v.30 no.4
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• pp.429-440
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• 2021

During the growing period, the integrated solar radiation inside the greenhouse was 12.7MJ·m^-2d^-1, and which was 90% of the average daily global radiation outside the greenhouse, 14.1MJ·m^-2d^-1. The 24-hour average temperature inside the greenhouse from July to August, which has the highest temperature of the year, was 3.04℃ lower than the outside temperature, and 4.07℃ lower after the rainy season. Before the operation of fog cooling system, the average daily RH (%) was lowered to a minimum of 40% (20% for daytime), making it inappropriate for paprika cultivation, but after the operation of fog system, the daily RH during the daytime increased to 70 to 85%. The average humidity deficit increased to a maximum of 12.7g/m³ before fog supply, but decreased to 3.7g/m³ between July and August after fog supply, and increased again after October. The daytime residual CO₂ concentration inside the greenhouse was 707 ppm on average during the whole growing period. The marketable yield of paprika harvested from July 27th to November 23rd, 2020 was higher in 'DSP-7054' and 'Allrounder' with 14,255kg/10a and 14,161kg/10a, respectively, followed by 'K-Gloria orange', 'Volante' and 'Nagono'. There were significant differences between paprika cultivars in fruit length, fruit diameter, soluble solids (°Brix), and flash thickness (mm) of paprika produced in summer season at large single-span plastic greenhouse. The soluble solids content was higher in the orange cultivars 'DSP-7054' and 'Naarangi' and the flesh thickness was higher in the yellow and orange cultivars, with 'K-Gloria orange' and 'Allrounder' being the thickest. The marketable yield of paprika, which was treated with cooling and heating treatments in the root zone, increased by 16.1% in the entire cultivars compared to the untreated ones, increased by 16.5% in 'Nagano', 10.3% in the 'Allrounder', 20.2% in the 'Naarangi', and 17.3% in 'Raon red'.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1993.10a
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• pp.13-14
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• 1993

우리나라의 '91년도 시설채소 재배면적은 48,855ha로서, 그 중 과채류 재배면적이 27,570ha이고, 기존의 파이프하우스를 이용한 비가림 시설재배 면적은 3,970ha로서 매년 증가하는 추세이다. 극민소득의 증가와 식생활의 고급화로 인해 고품질 과채류의 소비가 급증하고 있으며, 한편 세계 농산물시장의 교역자유화 추세로 인해 채소류의 품질고급화와 생산비 절감을 통한 국제경쟁력제고가 절실히 요청되고 있는 실정이다. (중략)

• 농업기술회보
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• v.51 no.4
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• pp.26-27
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• 2014

지구 온난화의 영향으로 여름철 시설하우스 내부온도는 $40{\sim}50^{\circ}C$이상 상승하는 반면 습도는 50~70%로 낮아진다. 우리나라는 여름철에 비가 집중되고 국지성 호우가 증가하는 추세로 6월부터 고온과 과습으로 인해 수정률이 낮아지고 생리장해가 증가되는 등 생산량과 품질이 저하돼 가격변동이 심한 편이다. 때문에, 여름철에도 안정적으로 시설채소를 생산하고 품질이 향상시키기 위한 환경조절 및 작물관리 기술을 소개한다.

• Proceedings of the Korean Society of Crop Science Conference
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• 2017.10a
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• pp.289-289
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• 2017

• Proceedings of the Korean Society of Crop Science Conference
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• 2017.10a
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• pp.106-106
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• 2017

• Proceedings of the Korean Society of Crop Science Conference
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• 2018.04a
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• pp.47-47
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• 2018

• Proceedings of the Korean Society of Crop Science Conference
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• 2018.04a
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• pp.108-108
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• 2018

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.13 no.2 s.107
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• pp.65-73
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• 1992

결론적으로 하우스의 연작장해 대책은 유기물 증시를 포함한 합리적인 비배관리를 바탕으로 논밭 돌려짓기등 윤작과 심경, 침수 등으로 염류 집적을 예방하는 동시에 적절한 수분관리와 석회시용, 접목재배 그리고 태양열소독, 약제소독등 보다 적극적인 토양소독 등의 근본적이고도 복합적인 병충해 방제대책을 수립, 실천하는 것이다.

• Proceedings of the Korean Society of Crop Science Conference
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• 2001.05a
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• pp.134-135
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• 2001