• 한국자원식물학회지
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• 제11권2호
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• pp.146-151
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• 1998

A study was carried our to investigate the characteristics of physico-chemical components palatability of cooked rice accoring to different transplanting time. The treatments were consisted of five transplanting time, from May 5 to July 5 at 15 -day intervals, and six cultivars ; two early-maturing, two mid-maturing and two late-maturing cultivars which are clearly identified by evaluation of cumulative temperature and growth duration from seeding to heading of rice plants. In gelatinization characteristics of rice grain, alkali digestion value was low in the earlier transplanting regardlessof maturing types. Initial pasting temeprature maximum viscosity and breakdown as amylogram charcteristics were high at the transplanting of June 5. The palatability of cookedrice was evaluated that early-maturing cultivars were much better in early transplanting than in late transplanting . The optimum transplanting time for palatibility was the periods from May 5 to 20 in early maturing varieties, May 20 to June 5 in mid-maturing and June 5 to June 20 in late-maturing ones at Honam district in Korea.

• 한국자원식물학회지
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• 제11권1호
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• pp.64-69
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• 1998

This experiment was conducted to investigatd the variation of some apearance chemical components at National Honam Agricultural Experiment Station in Korea. the treatements consisted of five transplating times, form May 5 to July 5 at 15-day interval , and six cultivars ; two early-maturing, two mid-maturing and two latematuring cultivars. The results showed that the variatio of grain appearance such as length-wide ratio was not significantly different in early -maturing cultivars, but mid-and late-maturing cultivars made slightly a round shape of grain in case of early transplanting. Percentage of complete grain was found to be high at transplanting of MAy 20 inearly-maturing cultivars and on June 5 in mid-and late-maturing ones. PERcentage of existed embryo after milling showed high at early transplanting of May 5 for early -maturing cultivars, and at the late transplanting of June 5 in early and late maturing one. The chemical components of rice grain showed high in protein , lipid,ash and amylose content inthe earlier transplanting, and also revealed high in carbohydrates, magnesium and potassium in the later transplanting of all cultivars.

• 한국초지조사료학회지
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• 제16권4호
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• pp.291-298
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• 1996

This study was carried out at Crop Experiment Station in 1993 and 1994. The objective of this study was finding out variation of growth and yield of corn according to maturity. Hybrids of corn used in this study were early maturing corn Comet80, Elite90, Royaldent IOOT, Royaldent T$\times$llO, P3525, P3394, medium maturing corn Royaldent 120T. and late maturing corn Jungbuok, P3144W. G4743. Stalk height, leaf number, ear weight, stover weight, and TDN yield of early maturing corn were linearly increased with prolonged maturity in 1993 growing season. Leaf number, and stover weight of early and late maturing corn were linearly increased with prolonged maturity in 1994 growing season. But ear weight of late manuring corn was not increased as much as that of early manuring corn with prolonged maturity. Increase of total DM and TDN yield of late maturing corn was due to stover weight increase compared with ear weight increase of early maturing corn. Leaf number and stover weight were highly correlated with silk (Growing Degree Days) GDD.

• Asian-Australasian Journal of Animal Sciences
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• 제19권7호
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• pp.970-977
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• 2006

Forage oat (Avena sativa L.) is grown extensively in a double-cropping system on dairy farms. Four oat varieties ('Swan', 'Targa', 'Foothill', and 'Nugene') were evaluated for forage production and forage quality during two growing seasons (spring and autumn) at two locations (central and southern region) in South Korea. The heading stage of four oat varieties was observed during spring, but the autumn season did not produce heading until harvest time except for the 'Swan' variety (early-maturing variety). The heading stage of 'Swan' in both locations was earlier compared to other varieties. The four varieties were resistant to both foliar disease and insects. Lodging resistance was higher during autumn except in 2002 at the central region, and late-maturing varieties ('Foothill' and 'Nugene') have lower lodging resistance. Dry matter (DM) content was significantly different between varieties (p<0.001). Comparing different varieties, 'Swan', an early-maturing variety, was highest in DM content. In DM, total digestible nutrients (TDN) and crude protein (CP) yield, the yield of oat varieties in the southern region was higher than in the central region, and forage yield of the oat varieties in the spring season was higher than during the autumn season. The DM and TDN yield showed significant differences between oat varieties. The CP content of oats grown in the central region (Cheonan) was lower than oats grown in the southern region (Daegu), and the spring season produced oats with lower CP compared to the autumn season. Among the four oat varieties, the CP content of late-maturing varieties was higher than the Swan variety (early-maturing variety). The acid detergent fiber (ADF) and neutral detergent fiber (NDF) contents were higher for the varieties grown in Cheonan and during the spring season. The ADF and NDF contents of late-maturing varieties were lower than the early-maturing variety. TDN and relative feed value (RFV) were higher for the varieties grown in Daegu and during the autumn season. Late-maturing variety had higher TDN and RFV than early-maturing variety. Our study showed differences in forage production and forage quality of oats grown in different locations, seasons and varieties. Forage quality as well as forage production was better in the southern region than in the central region. Forage quality was better during autumn, but forage production was better during spring. Late-maturing variety had better forage quality than the early-maturing variety. Therefore, late-maturing varieties are more suitable for use in the southern region.

• 한국초지조사료학회지
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• 제24권3호
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• pp.201-206
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• 2004

본 시험은 가을에 파종한 조, 만생품종 사초용 호밀의 생육특성 및 건물수량을 알기 위하여 실시하였다. 2002년 10월 3일과 2003년 10월 8일에 조생품종인 Koolgrazer을 대조품종으로 조생품종 9909, Ol-homil 및 Jlee select와 중생품종인 Homil 22 그리고 만생품종인 Danko, Kior, Amilo 및 Spooner을 각각 파종하였으며, 2003년 4월 22일과 2004년 4월 23일에 각각 수확하였다. 내도 복성은 조중생품종이 만생품종보다 다소 낮았다. 초고는 조중생품종이 만생품종 보다 길었다. $50\%$ 출수일은 조생품종이 2년 평균 4월 14일이었던 반면에 만생품종이 4월 24일로서 조생품종이 10일이나 더 빨랐다. CP 함량은 만생품종이 조생품종보다 높았으며, ADF와 NDF 함량은 조생품종이 높았다. 건물수량은 1년차 시험에서 조생품종Jlee select가 가장 높았으며(p<0.05), 9909와 Koolgrazer는 유사하였고, 중만생품종 Homil 22, Danko, Kior, Amilo 및 Spooner는 조생품종 보다 낮았다. 2년차 시험에서는 조생품종인 9909가 가장 높았으며(p < 0.05), Koolgrazer와 Ol-homil은 비슷하였고 Jlee select는 낮았고, 만생품종 Danko, Kior, Amilo 및 Spooner는 조생품종 보다 낮았다. 본 연구의 결과로 보아 2모작 작부체계에서 추파용 호밀은 조생품종이 적합하다고 생각된다.

• 한국축산시설환경학회지
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• 제4권1호
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• pp.47-53
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• 1998

The purpose of this study was to investigate the change of temperature, moisture content, weight and chemical properties in swine manure during the maturing process and moisture content of swine manure. The manure production on the early time(1 days), middle(25 days: and late(50 days) were made by moisture 45%, 55%, 65%, 75% in swine manure, according to manure treatment of the early time, the highest temperature of swine manure treatment was 59$^{\circ}C$ as moisture 75% after mixed 24 hours, the lowest 45% in mixed 25 days(middle time), 32$^{\circ}C$ as moisture 45% in mixed 50 days(late time). 2. Weight change during maturing manure, the most treatment of weight decrease was 17.4% as moisture 45%, the least of those was 12.2% as moisture 75% during maturing process of swine manure. 3. Volume change during maturing manure, the most treatment of volume decrease was 37.1% as moisture 65%, the least of those was 32.1% as moisture 55% during maturing swine manure, but not big difference between treatment. 4. T-N, P2O5, K2O content of compost were increased during maturing process, On the contrary, T-C content and C/N ratio were reduced.

• 한국초지조사료학회지
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• 제15권1호
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• pp.37-42
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• 1995

This experiment was canied out to study the effects of seeding and harvesting dates on the growth of early and late maturing rye(Seca1e cereale L.) varieties at the forage testing field of S.N.U., Suweon, from September 1986 to May 1989. Leaf and tiller numbers of rye per plant were increased with earlier seeding date, but no difference in the tiller numbers was found between harvesting dates of early and late maturing rye varieties. Tiller dry weight of an early maturing rye veriety, Wintermore was higher than that of a late maturing rye variety, Kodiak when sown as early as September. Maximun leaf area index(LA1) and leaf area index duration(LA1D) were achieved with earlier seeding and early maturing rye varieties. A higher correlation between the maximum LA1 or LAID and dry matter accumulation of rye varieties was observed in this experiment.

• 산업공학
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• 제13권4호
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• pp.745-750
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• 2000

This paper evaluated the 12 sensory measures suitable for evaluating taste of kimchi stored for 64 maturing days in the three kimchi refrigerators each made by the three different electronics companies respectively. The panel composed of 6 married women and 6 married man tasted sample of kimchi 8 times during the 64 maturing days. Analysis of variance results showed that among the 12 sensory measures sour smell, fresh smell, fermenting smell, sour taste, fresh taste, sensory satisfaction, and maturing degree were sensitive to differentiate both maturing days and refrigerators. Among sensory measures, maturing degree showed the most consistently increasing pattern during maturing days and the most consistently differentiating pattern for the refrigerators.

• 한국초지조사료학회지
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• 제17권1호
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• pp.27-34
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• 1997

This experiment was carried out to determine growth characteristics, dry matter (DM) yield, seasonal yield distribution and nutritive value of early- and late maturity orchardgrass, 1990 to 1992. The cultivars used in this study were Potomac, Hallmark (early maturing cultivar) and Lidacta, Rancho (late maturing cultivar), and a mixture plot (Potomac 25% + Hallmark 25% + Lidacta 25% + Rancho 25%) was involved. The seeding rate was 20 kgha in all treatments. Plant height of Potomac and Hallmark was longer than that of Lidacta and Rancho. The dates of initial heading and 50% heading of early maturing cultivars (Apr. 30 and May 10) were 10 days earlier than those of late matuing cultivars. Potomac and Hallmark were upright, and Lidacta and Rancho were semi-upright type, and severe disease and weeds (30 ~ 40%) were observed at Lidacta plot. On an average of three years, the DM yields of Potomac (10,549 kglna), Hallmark (10,435 kg) and mixture (10,356 kg) were significantly (P<0.05) higher than those of Rancho (9,457 kg) and Lidacta (8,218 kg). However, seasonal yield distribution of late maturing cultivars was better than that of early maturing cultivars. The contents of crude protein, crude fat, crude fiber, nitrogen %ee extract, aude ash, neutral detergent fiber, P, K, Ca, and Mg were not significantly different between cultivars, but higher aude protein yield was found at Potomac, Hallmark and mixture plots. Based on the above results, it may be concluded that early maturing cultivars for high productivity, late maturing cultivars for seasonal yield distribution, and seeding of mixture andlor separation of early- and late maturing cultivars are recommended. Also Lidacta was a not promising cultivar due to low productivity, severe disease, and high weeds development.

• 한국초지조사료학회지
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• 제14권4호
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• pp.316-323
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• 1994

In order to reduce the problems from the presence of rye crop residues in maize establishment and yield, and also to improve the growth, productivity and nutritive value of rye(Seca1e cereal L.). an experiment was canied out to determine the variety effect of rye on the forage production system and the eft'ect of seeding and harvesting dates on the production and quality of rye. 'This experiment was conducted at the forage testing field of S.N.U., Suweon, from September 1986 to May 1989. Heading date of an early maturing rye variety, Wintermore. was earlier 10 days than that of a late maturing rye variety, Kodiak. A 15-days delay in the seeding dates of early and late maturing varieties of rye tended to delay the heading dates of the rye varieties for 3 and 4 days, respectively. Dry matter and in vitro digestible dry matter yields were markedly increased with earlier seeding date. Before 20 April, the DM and IVDDM yeilds of an early maturing rye variety, Winterrnore. were higher than those of a late maturing rye variety, Kodiak. However, no such a trend was found between the early and late maturing varieties of rye after 27 April. Less than 35% of ADF was recorded until the harvesting dates of 13 and 27 p r i l for early and late maturing rye varieties, respectively, but less than 46% of NDF was maintained until the harvesting drtte of 13 April for botg varieties. Based on the results obtained from this experiment. it may be concluded that the most desirable forage production from corn-rye double cropping system is to advance the seeding time of rye toward the first 10 days of September as well as harvesting time toward the first heading stage with an early maturing rye variety.