Kim Su-Gon;Kim Jong-Duk;Kwon Chan-Ho;Ha Jong-Kyu;Kim Dong-Am
Journal of The Korean Society of Grassland and Forage Science
/
v.26
no.1
/
pp.31-38
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2006
This experiment was carried out to determine the effects of different sowing dates and cultivars on the forage yield and quality of winter rye (Secale cereale L.). The experiment was conducted in a split plot design with three replications. The main plots consisted of two sowing dates such as early (15 September) and late (30 September). The subplots consisted of rye cultivars of five different maturity groups such as 'Kodiak' (Late), 'Koolgrazer' (Early), 'Danko' (Late), 'Homil22' (Medium) and 'Olhomi1' (Early). Dry matter (DM) content at early sowing (19.7%) was higher than those at late sowing (17.8%), while crude protein (CP) and total digestible nutrients (TDN) contents at early sowing (16.6% and 61.6%) were lower than those at late sowing (16.8% and 63.1%). Although DM content of early maturing cultivars (Koolgrazer and Olhomi1) was higher than the other cultivars, CP and TDN contents of those were lower compared to other cultivars. The contents of fiber components (ADF, NDF and cellulose) at early sowing were higher than those at late sowing, while ADL and hemicellulose at early sowing were lower than those at late sowing. ADF and cellulose of early maturing cultivars were higher than those of the other cultivars, while ADL and hemicellulose of Danko were higher than that of the other cultivars. DM, CP, In vitro dry matter digestibility (IVDMD) and TDN yields at early sowing were higher than those at late sowing, and early maturing cultivars were higher than those of the other cultivars. Results of this study indicate that forage production technology in combination with early sowing and use of early maturing rye cultivar could enhance both production and quality of rye.
This experiment was conducted at Cheonan Yonam Experimental Livestock Farm in 2001-2002 to detennine the effect of harvest date(20 April, 26 April and 4 May) on forage yield and quality of rye varieties of three different maturing groups(early maturing variety = ‘Koolgrazer’ midseason maturing variety = ‘Horni122’ and late maturing variety = ‘Danko’). The heading date of Kooigrazer, Hornil22 and Danko were 17, 22 and 29 April, respectively. Dry matter percentage increased from 15.6 to 21.6% as the harvest date was delayed from April 20 to May 4. Among the rye varieties tested, dry matter percentage of Koolgrazer, Hornil22 and Danko were 20.9, 18.8 and 16.3%, respectively. Dry matter yield increased from 1l.2 to 13.9 ton/ha as the harvest date was delayed, but no significant difference among rye varieties. As the harvest date was delayed, total digestible nutrients(TDN) yield also increased significantly from 7.4 to 8.4 ton/ha However no significant difference was found among rye varieties. Crude protein(CP) percentage decreased from 20.3 to 17.1% as the harvest date was delayed, and CP percentage of late maturing variety, Danko, was significantly higher than that of the other varieties. In content of fiber component(NDF, ADF, ADL, hemicellulose and cellulose) of rye, the late harvest date(4 May) showed the highest among harvest dates. From comparisoo within rye varieties tested, Kooigrazer, a early maturing variety had higher than a rnidseason and late maturing varieties, Hornill22 and Danko. The cellulase digestible of organic matter of dry matter(CDOMD) decreased as the harvest date was delayed. Among the rye varieties tested, the CDOMD of a early maturing variety, Koolgrazer was the lowest. Our study differences of winter rye in forage yield and quality resulting from variety maturity and harvest stage. A early maturing variety, Kooigrazer should be harvested between 24 and 28 April, Hamill 22(midseason maturing variety) harvested between 29 April and 3 May, Danko(late maturing variety) harvested between 4 and 8 May for maximum forage yield and optimum quality.
Journal of The Korean Society of Grassland and Forage Science
/
v.41
no.2
/
pp.128-133
/
2021
This study was carried out to evaluate the forage yield and feed value of winter crops such as Italian ryegrass (IRG), oat, rye, barley, and hairy vetch. Forage crops were sown on 15th October 2018 in a paddy field after harvesting rice and forage crops were harvested at two times of 25th April 2019 and 18th May 201 9. The highest dry matter (DM) yield was harvested from rye among the five species of forage crop on 18th May. DM yield of all forages was increased 14.4% on 18th May compared to 25th April. The highest yield of crude protein (CP) was obtained from hairy vetch on 25th April, whereas it was decreased (38.1%) on 18th May. Moreover, the highest total digestible nutrient (TDN) yield and relative feed value (RFV) was harvested respectively from rye and hairy vetch on 25th April. Delay of harvest time considerably increased DM yield but significantly decreased CP and RFV. In conclusion, rye was the best source of DM and TDN and hairy vetch was the high-quality feed. Rye harvested on 25th April is the proper forage for resolving Korea's problem of insufficient forage yield.
Journal of The Korean Society of Grassland and Forage Science
/
v.32
no.3
/
pp.203-208
/
2012
Pyeongangok, a new single cross variety, is an yellow dent maize hybrid (Zea mays L.) developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2011. This hybrid, which has a high yield of grain and dry matter, was produced by crossing two inbred lines, KS160 and KS155. KS160 is the seed parent and KS155 is the pollen parent of Pyeongangok. Silking date of Pyeongangok is 2 days earlier than that of check hybrid, Jangdaok, and equal to that of another check hybrid, Kwangpyeongok. Plant height of Pyeongangok is longer than that of Jangdaok and similar to that of Kwangpyeongok. Ear numbers per 100 plants of Pyeongangok is more than that of Jangdaok. Ear length of Pyeongangok is shorter than that of Jangdaok. 100 seeds weight of Pyeongangok is lighter than that of Jangdaok. Ear rate of Pyeongangok is lower than that of Kwangpyeongok. Stay-green of Pyeonganok is not greatly different with that of Kwangpyeongok. It has moderately resistance to southern corn leaf blight (Bipolaris maydis), black streaked dwarf virus (BSDV) and corn borer. It has strong resistance to northern corn leaf blight (Exserohilum turcicum). It has resistance to lodging. Pyeongangok was evaluated for the yields of grain and dry matter at four locations from 2009 to 2011. The yield of Pyeongangok in grain was 7.66 ton/ha. The yield of Pyeongangok in dry matter was 19.80 ton/ha. The yield of Pyeongangok in total digestible nutrient (TDN) was 13.32 ton/ha. Seed production of Pyeongangok has gone well due to a good match during crossing between the seed parent, KS160, and the pollen parent, KS155, in Yeongwol.
Journal of The Korean Society of Grassland and Forage Science
/
v.16
no.1
/
pp.81-86
/
1996
Silage wm(cv, Gwanganok) was cultivated during 1991-1994 on paddy land as a rotational cropping system of rice, to evaluate the effect of cattle manure application on the soil characteristics, yield performance and quality of com plant. The treatments used in this study were non-fertilizer, NPK standard in chemical fertilizer(N:$P_2O_5$ : $K_2O$= 200 : 150 : 150 kg/ha), cattle manure 20.40, 60 and 80 ton/ha Application of cattle manure improved soil pH, organic matter, available phosphate and exchangeable cations in the soils. During the experiment, soil pH was improved from 4.7 in the chemical fertilizer application(control) to 5.4-5.6 in the application of cattle manure, and available $P_2O_5$ wntent was increased from 72.2 ppm(contro1) to 340.2 ppm(cattle manure 80 ton/ha). Application of cattle manure increased plant growth, plant height and stalk diameter, and silage yields. Dry matter yields were produced 15.88 ton(chemical fertilizer), 20.11 ton(cattle manure 40 ton) and 21.22 ton/ha(cattle manure 80 ton/ha). However, no signicant yield differences were observed between cattle manure 40, 60 and 80 tonlha Productions of total digestible nutrients(TDN) and net energy for lactation(NEL) were also increased under cattle manure application. From the abobe results, the proper application amount of cattle manure was 40 tonha in this experiment.
Son Beom-Young;Moon Hyeon-Gui;Jung Tae-Wook;Kim Si-Ju;Kim Jong-Duk
KOREAN JOURNAL OF CROP SCIENCE
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v.51
no.3
/
pp.233-238
/
2006
This study was conducted to evaluate growth characteristics, yield and feed value of newly bred domestic silage corn hybrids compared to foreign imported corn hybrid. Days to silking were $78{\sim}86$ days and longer than that of P3394 (Control). Kwangpyeongok, Cheonganok, and Cheongsaok were resistant to lodging. Such trait of stay-green of Kwanganok, Kwangpyeongok, Cheonganok, Cheongsaok, and Suwon159 was not different from that of P3394. Duruok, Kwangpyeongok, and Suwon159 were more resistant to Bipolaris maydis (southern corn leaf blight) than P3394. All of the silage corn hybrids were resistant to Exserohilum turcicum (northern corn leaf blight) and Smut. Ear ratios to total dry matter (%) of Cheonganok was similar to P3394. Ear lengths of domestic hybrids were similar or longer than that of P3394. Dry matter yield of domestic hybrids except Suwon19 and Jangdaok were similar to that of P3394. Total digestible nutrient (TDN) yields, Duruok, Kwangpyeongok, Cheonganok, and Cheongsaok were similar to P3394, but Kwanganok, Suwon19, Jangdaok and Suwon159 were lower than P3394. Acid detergent fiber(ADF), Suwon19 was lowest among all hybrids, and all hybrids except Suwon19 had values ranging from 44.7 to 49.0%, similarly with P3394. Neutral detergent fiber (NDF) values of the hybrids were similar to that of P3394, and ranged from 68.1 to 72.8%, except for Duruok which was lowest. Relative feed values (RFV) of Duruok, Kwangpyeongok, Cheonganok, Jangdaok, and Suwon159 had values ranging from 71.0 to 75.7 and were not significantly different from P3394. ADF was significantly negatively correlated with number of days to silking, number of days to maturity, and fresh matter yield, but was significantly positively correlated with resistance to corn borer. RFV showed a significantly positive correlations with no. of days to maturity and fresh matter yield, but significantly negative correlation with resistance to European corn borer. Therefore, indices for evaluation of feed value as well as production were important to select corn hybrids for silage. It is concluded that domestic hybrids tested in this study have high feed value as well as high production similar to those of imported corn hybrid.
Journal of The Korean Society of Grassland and Forage Science
/
v.8
no.1
/
pp.20-25
/
1988
This experiment was conducted to find out the effects of the different cutting height on the chemical composition, energy production and relation of yields of Italian ryegrass, tall fescue and perennial ryegrass swards. It was carried out on the experimental field of Livestock Experiment Station, in Suweon, from Sept. 1986 to May 1987. The results obtained are summarized as follows: 1. Chemical composition and Van Soest fiber contents were slightly different among grasses. But were not same trend with cutting heights. At the late vegetative stage, crude protein and crude fiber content were much more in tall fescue, Ash in perennial ryegrass, E.E. and NFE in Italian ryegrass respectively. NDF, ADF, Hemicellulose, Lignin, Cellulose and Silica contents were much more in tall fescue than the others. 2. DM, DCP, TDN, StE, ME and NEL productions were appeared to high in line with Italian ryegrass, perennial ryegrass and tall fescue. In addition 6 cm cutting height was the most production in Italian ryegrass, 15 cm cutting height was the most production in perennial ryegrass and tall fescue. 3. The much more content of crude protein, the less nonstructural carbohydrate content. The less content of NDF, the much more nonstructural carbohydrate content. Green and dry matter yield before wintering were not influence the green and dry matter yield of the late vegetative stage, but green yield before wintering influenced total green yield.
Journal of The Korean Society of Grassland and Forage Science
/
v.21
no.2
/
pp.59-66
/
2001
In order to determine the influence of nitrogen on agronomic characters, forage yield and quality, a Kenaf was cultured on the volcanic ash soil at the Experimental Farm of Cheju national University under the seven levels of nitrogen rates(0, 50, 100, 150, 200, 250kg/ha) from April 25 to Dec. 25, 1999. The plant height increased by increase of nitrogen rate, showing longest 250kg/ha with 286.6cm and shortest at no application plot with 255.7cm. The difference on leaf number, leaf withering number, stem diameter and branches number by nitrogen rate showed a similar tendency to the plant height. Increasing N rate from 0 to 250kg/ha fresh forage yield form 55.8 to 99.8MT/ha, dry matter (DM) yield from 8.8 to 15.8MT/ha, crude protein(CP) yield form 1.2 to 3.1MT/ha, total digestible nutrients (TDN) yield from 3.8 to 8.6MT/ha. However, no significant differences in these yields were found between 200 and 250kg N/ha. Nitrogen uptake increased form 192.9 to 496.2 kg/ha but N use efficiency decreased form 95.0 to 66.6 kg DM$^{a}$ /kg N with increasing from 0 to 250 kg/ha. As N rate increased from 0 to 250kg/ha, leaf and stem out of CP, crude fat (CF), nitrogen free extract (NFE), TDN contents increased from 20.1% to 25.8% and from 9.7% to 12.4%, from 5.6% to 8.1% and from 3.3% to 4.4%, from 36.1% to 40.2% and from 21.9% to 32.4%, from 59.3% to 75.0% and from 32.2% to 38.2%, respectively, while leaf and stem out of crude fiber decreased from 18.5% to 16.7% and from 51.5% to 39.3%. Based on the these findings, the optimum N rate for forage production of kenaf seems to be about 200 kg/ha in atmospheric phenomena and volcanic ash soils of jeju island.
Journal of The Korean Society of Grassland and Forage Science
/
v.21
no.2
/
pp.53-58
/
2001
Jeju Italian millet was grown at five planting densities(5$\times$5, 15$\times$15, 20$\times$20, 25cm) form May 13 to Aug. 14, 2000 at jeju island to determine influence of planting density on agronomic characters, forage yield and quality. Days to heading increased from 87 to 89 days as planting density was decreased. In 5$\times$5cm planting density plot, plant height was 185.4cm and it was gradually decreased as planting density was increased. So in 30$\times$30cm planting density plot, plant height was 173cm. As planting density increased, stem diameter, the number of nodes per plant, the umber of leaves, leaf width and SPAD reading values was increased, the longer leaf length as the broader planting density. Fresh forage yield increased from 29.99 to 55.01MT/ha, dry matter(DM) yield from 8.04 to 15.59MT/ha, crude protein(CP) yield from 0.78 to 2.26MT/ha and total digestible nutrients(TDN) yield from 3.65 to 7.93MT/ha as planting density was decreased. Crude protein content increased from 9.8 to 14.5% ether extract comtent from 1.4 to 1.9%, nitrogen free extract content from 38.4% to 38.9% and TDN content from 45.4 to 50.9%, but crude fiber content decreased from 34.5 to 30.1% and crude ash content from 9.1 to 8.0% as planting density was decreased.
This experiment was conducted to determine the effects of cutting height on the yield and nutritive value of brittle culm rice. A brittle culm cultivar, KL501, was compared with a non-brittle culm rice, Seomjinbyeo. The cultivars were grown in paddy until flowering stage at which the first cutting was made followed by the second cutting on October 20. Cutting regime conducted were 0, 5, 10 and 20cm from the surface. Herbage yield, TDN and other nutritive values were measured. As the higher cutting height, crude protein, fat and NFE (nitrogen free extract) contents were increased and crude fiber and ash content were decreased at the first cutting, while those at second cutting were increased except NFE content. Fresh and dry matter yield at 10cm cutting height, Seomjinbyeo was 4.45 and 1.16t /ha, KL501 was 4.71 and 1.14t /ha, respectively. TDN content of first cutting was increased as the higher cutting height, but that of second cutting was decreased. TDN yields of Seomjinbyeo and KL501 at 10cm cutting height were highest by showing 0.63t /ha and 0.61t /ha, respectively.
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