• Horticultural Science & Technology
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• v.29 no.5
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• pp.441-446
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• 2011

The effects of UV irradiation, as a hormetic stimulus, on the postharvest persimmon fruits (Diospyros kaki cv. Fuyu) were investigated in regards to the change of carotenoid contents and flesh softening, when the UV irradiation was combined with or without the pretreatment of 1-methylcyclopropene (1-MCP) as an ethylene action inhibitor. The major carotenoid pigments in persimmon fruits were ${\beta}$-carotene, lycopene and ${\beta}$-cryptoxanthin. Of them, the lycopene was a pigment, which increased markedly after harvest. UV irradiation increased the contents of ${\beta}$-carotene and lycopene, enhancing the skin color to scarlet. The treatment accelerated however also the softening of fruit flesh. But the softening of UV irradiated fruits could be delayed significantly by pretreatment with 1-MCP without reducing the advantageous effect of UV irradiation on the carotenoid increase.

• Korean Journal of Plant Resources
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• v.20 no.2
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• pp.125-128
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• 2007

Plan stability production investigating 1st harvesting degree for maximum leaf quantity enlargement, is as following it summarize result that test for 3 years since 2002 allowing 4 processing such as trunk lower column department harvesting, Foliar and rhizoma growth were tendency that give protective care 1 st harvesting height is short, but there were many the number of tillering crawl, Distribution of rhizome about diameter 5mm low 58%, large rhizome's ratio was high tendency harvesting height is short. Because foliar amount is much harvesting height is short in ground department, 15% rose in soil surface harvesting since 292kg provision per 5cm harvesting 10a, The time of refining the harvest of stems and leaves before drying has reduced when the height of the harvest is low, and the 5cm harvest has decreased 30% compared to the soil surface harvest.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.07a
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• pp.128-134
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• 2002

당근 수확작업에 대한 기계화 요구도가 높은 반면에 아직까지 수확작업의 기계화는 그다지 진전되지 못하고 있는 실정이다. 지금까지의 당근 등 근채류의 수확작업은 경운기용 또는 트랙터용 굴취기를 이용하여 작물을 지상위로 노출시키고 인력으로 수집하는 방법이 대부분이며 흙이나 돌 등 협잡물의 선별은 곤란하다. 또한 줄기절단 등 수확 후처리 작업이 기계화되지 못해 노동부담이 크다. (중략)

• Korean Journal of Soil Science and Fertilizer
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• v.30 no.4
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• pp.351-356
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• 1997

This experiment was aimed to find out the measures or soil managements in continuous melon cultivation and to produce the high quality of yellow melon in plastic film house culture. The experiment was designed with surveying of farmer's field and conducted for 4 years. The most effective measure of soil managements was to cultivate paddy rice in June after harvesting the melon and next ways were treated with submergence or the plastic film for 40days during the period of high temperature of summer and plowed over 50cm depth with plough machine. To decrease the soil problems in continous cultivation, the addition of red earth soil of 500M/T per 10a with increasing the application rates of rice straw and fertilizer (N, P, K) in 30% and 10% respectively was effective in plastic film house culture. The effect of soil amendment application was continued for two years at least and it increased the commercial quality and sugar content in brix of yellow melon in 10% and 2.6 degree respectively.

• Journal of Bio-Environment Control
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• v.26 no.4
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• pp.310-316
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• 2017

This study was analyzed the effects of boron (B), calcium (Ca), silicon (Si) on quality and shelf life of 'Unicorn' cherry tomato at the light red maturity-stage. The storage conditions were modified atmosphere packaging (MAP) by oxygen transmission rate (OTR) packaging film at $5^{\circ}C$, $11^{\circ}C$, and $24^{\circ}C$. Respiration and ethylene production were the lowest in B + Ca + Si -treated tomato fruits. The lowest fresh weight loss and the longest shelf life resulted from the B + Ca + Si treatment. And the firmness was enhanced by B + Ca + Si treatment at harvest time, and it was retained after storage at $5^{\circ}C$, $11^{\circ}C$, and $24^{\circ}C$. Significantly lower soluble solids, lycopene, and color development were found at B + Ca + Si-treated tomato fruits compared with control after storage. Moreover, the highest titratable acidity and vitamin C content were observed in B + Ca + Si-treated tomato fruits after storage. From the above results, it was concluded that B + Ca + Si combined treatment can delay the maturity of cherry tomato after harvesting, and retained the firmness and prolong the shelf life.

• Journal of The Korean Society of Grassland and Forage Science
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• v.39 no.1
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• pp.31-38
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• 2019

This study was carried out to investigate the growth characteristics, yield, and chemical compositions of winter forage crops cultivated after rice harvest in the central inland region. The experimental design was arranged in a randomized block design with three replications. The treatments consisted of 4 species (Rye, Oat, Triticale and Italian ryegrass), and varieties were "Marton", "Donghan", "Shinyoung" and "Kowinnearly", respectively. As a result, dry matter yield and TDN yield were higher in rye than in the other winter forage crops, and lowest in Oat(p<0.05). Crude protein and crude fat content were significantly higher in Italian ryegrass(p<0.05). However, Crude ash and ADF content did not show significant difference among winter forage crops. NDF content was higher in order of Rye > Triticale > Oat > Italian ryegrass(p<0.05). TDN and total amino acid content (EAA+NEAA) were higher in order of winter forage crop with high crude protein content (Italian ryegrass > Oat > Triticale > Rye). Total mineral content was higher in order of Rye > Triticale > Oat > Italian ryegrass(p<0.05), and total free sugar content was higher in order of Oat > Italian Ryegrass > Triticale > Rye(p<0.05). Compared with the results above, Italian ryegrass and Oat are high in crude protein, TDN, amino acid and free sugar content. Rye and Triticale have the merit that feed value is decreased but high yield(dry matter and TDN yield) can be maintained. Therefore, it is advantageous to grow Rye and Triticale as winter forage crops after rice harvest in the central inland region.

• The Korean Journal of Mycology
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• v.48 no.4
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• pp.407-414
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• 2020

To replace the sawdust in the growth medium of oyster mushroom to utilize its by-product spent mushroom substrates (SMS) as feed for ruminant, we performed cultivation test using cotton seed hull pellet (CSHP), corn stalk pellet (CSP), corncob (CC), and analyzed the feed chemical properties of those SMS. As a result of cultivation test, CC and CSHP treatment took 27 days for spawn run, 4 days for primordium formation, and 3 days for development fruiting bodies, resulting in a total cultivation period of 34 days. The yield per bottle was 134 g for CC treatment, similar to 130 g for control, while CSHP treatment (112 g) and CSP treatment (68 g) were lower than that of control. The highest biological efficiency (BE) was shown in CC treatment as 80.1%, which was 11.4% higher than 68.7% of control. The SMS of CC treatment had a relatively low content of neutral detergent fiber and acid detergent fiber, and in particular, lignin content was the lowest and crude protein content was the highest among other treatments. Therefore, CC as a substitute material for sawdust was capable of stable mushroom production and excellent nutritional value as a feed for its by-products.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2023.04a
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• pp.3-3
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• 2023

우리나라 딸기는 시설재배 발전과 품종개발로 겨울을 대표하는 과일로 변신하였다. 이는 저온단일에서 꽃이 만들어져 착과되는 생태적(일계성)특성 때문이다. 우리나라의 딸기 정식기는 95%이상이 촉성작형으로 9월 중순 정식한 후 11월 하순부터 이듬해 5월 하순까지 약 6개월간 수확한다. 반대로 여름작형은 고온장일에서 꽃이 만들어져 착과되는 사계성 품종을 이용하는데 우리나라 500m 이상의 산간 고랭지에서 3-4월에 정식한 후 6월부터 11월까지 수확하지만 생산량은 전체의 0.3% 미만이다. 또한 여름딸기는 제과용으로만 사용되고 있어 6월부터 11월 사이에 신선딸기의 단경기가 발생된다. 이러한 문제를 재배적으로 해결하기 위해 일계성 품종을 이용하여 겨울부터 봄까지 포기냉장한 후 여름과 가을에 꺼내어 정식하면 45일 내외에 수확하는 주냉장 억제작형을 시도하였으나 우리나라에선 실용성이 떨어져 사라져간 기술이다. 그러나 네덜란드는 우리나라와 같은 주냉장기술을 활용(Waiting bed system, Table top system)하여 여름과 가을철에도 딸기를 생산하고 있다. 이 작형은 냉장기간이 길고 재배기술도 까다로울 뿐만아니라 1화방만 수확하여 수량성이 낮은 단점이 있다. 한편 미국에서는 일계성 품종이 품질은 좋으나 고온기에 꽃대발생이 어렵고 사계성은 품질이 떨어지는 단점을 극복하기 위해 일장의 길이와 관계없이 꽃대가 형성되는 중일성 딸기 품종을 보급하여 세계적으로 가장 많은 재배면적을 점유하고 있다. 연중생산이 가능한 중일성 품종을 개발하기 위해 먼저 유전자원을 수집하였고 품질이 좋은 일계성 품종을 중일성 품종과 교배하여 채종하였다. 교배종자를 파종하여 묘를 만든 후 정식하여 실생개체를 선발한 결과 고온장일 조건에서 개화되는 사계성(중일성)율은 약 10-20% 범위로 매우 낮았다. 선발된 우량계통은 영양번식을 통해 증식하여 생산력, 특성, 지역적응성 검정과정을 통해 품종을 개발하였다. 이렇게 단교잡에 의한 중일성 품종 선발육종은 선발율이 0.05%으로 매우 낮았다. 이렇게 우리나라 최초의 중일성딸기 '고슬' 품종이 개발되었다. 이 '고슬'은 9월부터 수확이 가능한데 이 때의 딸기 가격이 kg당 20,000원 이상으로 높으며, 수확기간은 '설향'보다 4개월 더 길게 재배가 가능하다. 연중재배를 위해서는 항상 8-25℃의 범위을 유지해야 품질이 높아지므로 재배관리가 중요하다. 흰가루병에는 저항성이 있으나 시들음병과 탄저병에는 약하고 당도와 경도가 높고, 향이 매우 진하다. 식물공장에서 매우 인기가 있는데 안정된 꽃대발생과 대과, 고당도와 함께 수술의 화분량이 많아 수정이 잘되는 특성으로 식물공장 사업이 확장되고 있는 중동나라에서도 로열티 계약(UAE 등)이 예정되어 있다. 1년 연중 개화되고 착과되는 특성으로 가정에서 기르는 반려식물로도 인기가 있다. 또한 아열대 고랭지대는 항상 서늘한 날씨이기 때문에 한번 정식후 1년 연중생산이 가능하여 2023년 베트남과 로열티 계약(1.6억원)을 하였다. 또한 '고슬'은 우리나라 신선딸기 수출 단경기에 생산되어 주년생산 수출체계에도 기여할 것으로 본다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.57 no.2
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• pp.195-201
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• 2012

It is important to determine the optimum harvesting time that impact decisively on the quality of vegetable waxy corns. In general, it takes 20~25 days from silking to harvest according to ecotype when waxy corn hybrids were sown in April. We identified the optimum harvesting time by the ecotypes and seeding dates for the establishment of corn double cropping system of waxy corn. It takes 23~25 days from silking to harvest regardless of ecotype, when waxy corns were sown at early in April or late in June. It takes 28~31 days when Chalok1, early maturing type, was sown between in July 10, and in July 30. It takes 29~31 days when Ilmichal, medium late maturing type, was sown between in July 10 and in July 20, but 39 days were required when sown at in July 30. The cumulative temperature for harvesting was about $1700^{\circ}C{\sim}2100^{\circ}C$. The minimum cumulative temperature from seeding to harvest was approximately $600^{\circ}C$. These results will be helpful to the farmers for determining the optimum harvest time of vegetable waxy corns.

• 농업기술회보
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• v.46 no.1
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• pp.34-35
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• 2009

최근 소비자들은 먹을거리의 안전성, 건강 다이어트식품으로 겨울철 간식용뿐만 아니라 맛탕, 고구마밥, 튀김 등 요리에도 이용되고 있는 고구마를 선호한다. 그러나 고구마는 수분이 많고 저온에 노출되면 냉해를 받아 부패하게 되므로 저장관리가 까다롭다. 수확 후 저장관리를 잘한다면 수확 직후부터 이듬해 7월 중 하순, 햇고구마가 출하될 때까지 연중 공급이 가능하다.