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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of The Korean Society of Grassland and Forage Science
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Journal DOI :
The Korean Society of Grassland and Forage Science
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Volume & Issues
Volume 14, Issue 4 - Dec 1994
Volume 14, Issue 3 - Sep 1994
Volume 14, Issue 2 - Jun 1994
Volume 14, Issue 1 - Mar 1994
Selecting the target year
The Importance of Grassland and the Diretion of Grassland Science Education in College
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 149~156
리드 카나리그라스의 농업적 특성 ( A Review on Agronomic Charateristics of Reed Canarygrass ( Phalaris arundinacea L. ) )
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 157~176
Shoot.Root Growth and Nodule Formation of White Clover as Affected by Removal of Cotyledon and Unifoliolate
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 177~185
Slow seedling growth rate and nodulation failure of white clover (Trifolium repens L.) has been limited its good establishment to pastures. The experiment was done to determine the effect of removal of cotyledon and unifoliolate on the shoot, root growth, and nodule formation of 4 white clover cultivars for 8 weeks after the treatment. Four white clover cv. Regal (large leaf), Louisiana S-I (medium-large leaf), Grasslands Huia (mediumsmall leaf), and Aberystwyth S184 (small leaf), were grown in IOcm plastic pot containing 2:l:l soi1:sand:peat moss mixture until grown to cotyledon or unifoliolate stage and then removed one (Cl) or two cotyledons (C2) at cotyledon stage, and unifoliolate only (U), unifoliolate and one cotyledon (UCl) or unifoliolate and two cotyledons (UC2) at the unifoliolate stage, and the plants were sampled at 4, 6 and 8 weeks after the treatments. The intact plants had greater shoot and root dry weights, and no. of nodules than removal-treated ones. Removal treatments at cotyledon stage, the dry weight and no. of nodules more decreased in C1 and C2 than that of unifoliolate stage. While the severer cotyledon removal, the more reduction. Although the dry weights and no. of nodules steadily inclined with regrowing period, the former were higher in Regal and La. S-1 than in the others since 6 weeks after removal treatment but the latter was more in S 184 than in the others 8 weeks after removal treatment. Relationship between no. of nodules and shoot or root dry weight was analysed as linear mode while the earlier and severe removal, the steeper slope. It was concluded that severer damage of cotyledon and unifoliolate had detrimental effects on the shoot and root growth, nodule formation, and aftermath establishment of white clover.
Seeding Vigor of Birdsfoot Trefoil Entries Differing in Seed Size
S. N. Hur ; C. J. Nelson ; P. R. Beuselinck ; J. H. Coutts ;
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 186~194
Lack of seedling vigor is considered a serious deterrent to use of broadleafed birdsfoot trefoil (Lorus comicul~rus L.). Our objectives were to compare early seedling growth of broadleafed birdsfoot trefoil cultivar "MO-20" and the large-seeded accession 302921 at
. in controlled-environment chambers. Cabon dioxide exchange rate (CER) was measured in a closed or open system using infrared gas analysis. Dark respiration rate was measured manometrically. Net carbon accumulated per day and growth analysis of the seedlings were calculated. Initial seed mass of 302921 was 3.5 times larger and final cotyledon area was 2 times larger than those of MO-20, and early seedling growth was better. But, from 3 weeks after emergence until the end of the test period at
, MO-20 showed higher CER per unit leaf area and faster dry weight accumulation than did 302921. Compared with
, growth of MO-20 at
was suppressed more than that of 302921. Dark respiration rate of MO-20 was slightly higher than that for 302921, but not COz uptake per day for MO-20 was highest at
and lowest at
. The relative growth rate (RGR) of MO-20 was higher than 302921 at
due to high net assimilation rate, but there was little difference in RGR between entries at
Environmental Adaptation of Tall Fescue varieties in Mauntainous pastures VI. Varietal Differences in seasonal produntion
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 195~200
This experiment was undertaken to study the relationship between dry weight of plant(DW) and yield components. varietal differences in seasonal production at each of three cutting. and to classiQ them into some patterns of seasonal production in tall fescue varieties. The varieties examined were Barvetia. Fuego, Demeter. Safe, Barcel. Forager, Johnstone. Enforcer and Stef. The results obtained were as follows : 1. The Fuego and Barcel with high number of tiller per plant(NT) which had more dry wieght of plant(DW) than those of varieties with low number of tillers per plant(NT) at each cutting. 2. The dry weight of plant(DW) in 1st cutting indicated positive significant correlation with the number of tillers per plant(NT) and dry weight of a tiller(WT). But there was only positive correlation between the number of tillers per plant(NT) and dry weight of plant(DW) in 2nd and 3rd cutting. 3. Mean relative yield of each cutting were 3 1 %. 29.7% and 39.3% in 1st. 2nd and 3rd cutting, respectively. 4. Tall fescue varieties could be classified into 3 different seasonal growth patterns according to their mode of relative yield at each cutting. Barvetia, Fuego, Johnstone. Enforcer and Stef belong to the group of ABA with high relative yield in 1st and 3rd cutting. Demeter, Safe and Forager belong to the group of CBA with relative yield increased linearly up to 3rd cutting. And, Barcel belong to the group of BAB with high relative yield in 2nd cutting.
Tall fescue 품종의 환경적응성 VII. 계절과 품종에 따른 가소화양분총량과 건물소화율의 차이 ( Environmental Adaptation of Tall Fescue varieties in Mauntainous pastures VII. Seasonal and varietal differences of total digestible nutrients ( TDN ) and in vitro
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 201~205
The objectives of this research are to determine the seasonal and varietal differences of total digestible nutrients(TDN) and in vitro dry matter digestibility(1VDMD) of tall fescue grown in Takwalyon areas, based on the data of preceding paper(Lee et al. 1994b). The results are may be summarized as follows : 1. The values of total digestible nutrients(TDN) and in vitro dry matter digestibility(1VDMD) in 1st cutting were lower than the values of 2nd and 3rd cutting, and it was due to different stages of growth and seasonal difference of climatic conditions in this areas. 2. The relative yield(RY) had negative significantly correlation with in vitm dry matter digestibility(1VDMD) of 1st cutting. 3. Total digestible nutrients(TDN) indicated high positive significant correlation with in vitro dry matter digestility (IVDMD) in all cuttings. 4. The variety of Johnstone showed a high values of total digestible nutrients(TDN) and in vitm dry matter digestibility(1VDMD) of 2nd and 3rd cutting, but Fuego was lower than the other varieties.
단파 및 혼파초지에서 Orchargrass ( Dactylis glomerata L. ) 품종의 방목반응 I. 생육특성 , 건물생산량 및 잔초장 변화 ( Response of Orchargrass ( Dactylis glomerata L. ) Vatieties to Grazing Monocultures and Mixed Pastires I. Growth charateristics , changes
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 206~214
This experiment was conducted to find out the response of orchardgrass (Dactylis glomrrata L.) varieties to grazing at the condition of monocultures and mixed pastures on the field of Livestock Experiment Station at Suwon from Sep. 1989 to Oct. 1991. The varieties of orchardgrass used in this experiment were Potomac, Hallmark and Syn. No. 2 as a early maturing type, and Lidacta, Rancho and Syn. No. 10 as a late maturing type. The results obtained were as follows: I. Heading date of early maturing varieties among orchardgrass like as Potomac, Hallmark and Syn. 2 ranged from May 9 to May 14. Otherwise those of late varieties(Lidacta Rancho and Syn. 10) were between May 21 to May 25. Leaf types of early varieties were shown erect, those of late varieties were erect or semi-erect. 2. In dry matter production per ha, mixture with Rancho variety(T5) was the highest as 7.818 kg and mixture with Hallmark(T2) was the lowest as 7,013 kg. But there was not significantly different(P>0.05) among mixtures. While in monocultures, Syn. 10 variety was the highest(6.626 kglha) and Lidacta was Iowest(5,775 kg). But no difference was found(P>0.05). 3. In mean grass height after grazing, mixtures with early maturing types were higher as 9.8 cm than that of late (8.8cm), and early types were higher as 10.5cm than that of late(9.4cm) in monocultures. But there was no significant difference both mixtures and monocultures.
단파 및 혼파초지에서 Orchargrass ( Dactylis glomerata L. ) 품종의 방목반응 II. 목초이용율 , 일반성분함량 및 식생구조 변화 ( Response of Orchargrass ( Dactylis glomerata L. ) Vatieties to Grazing Monocultures and Mixed Pastires II. Changes of herbage utili
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 215~222
This experiment was conducted to find out the response of orchardgrass (Dactylis glorneruta L.) varieties to grazing at the condition of monocultures and mixed pastures on the field of Livestock Experiment Station at Suwon from Sep. 1989 to Oct. 1991. The varieties of orchardgrass used in this experiment were Potomac, Hallmark and Syn. No. 2 as a early maturing type, and Lidacta, Rancho and Syn. No. 10 as a late maturing type. The results obtained were as follows: 1. Herbage utilization of mixture with Hallmark variety(T2) was the highest as 78.2% and that with Rancho variety(T5) was the lowest as 70.2%. but there was no difference(P>0.05). Mixtures with early maturing varieties(T1, T2 and T3) were higher as 77.4% than those with late varieties(T4, T5 and T6) as 72.9% in herbage utilization. In monocultures Rancho variety(T5) was the highest as 68.6% and Lidacta variety(T4) was the lowest as 58.8%, and mixtures with early maturing varieties(T1, T2 and T3) as 66.6% were higher than those of late(T1, 72 and 73) as 64.6%. 2. The content of crude protein of 6 mixed pastures ranged from 19.7% to 22.8%, and those of ether extracts, crude fiber, crude ash and nitrogen free extract were 6.6 to 7.5%, 24.9 to 26.2'76, 1 1.5 to 1 1.9% and 33.6-35.4 8, respectively, But there were not different significantly(P>0.05). In monocultures, significant difference by variety was observed in crude protein content(P<0.05). 3. In botanical composition, there was just a little different among 6 mixtures, having 90% or more in grass percentage. The percentages of each orchardgrass varieties were decreased, but those of perennial ryegrasses were increased as grazing sesson was progressed in all treatment.
초지에 대한 인산질비료의 시용에 관한 연구 IV. 인산질비료의 시용수준이 목장의 식생구성과 무기물함량 및 토양화학성분에 미치는 영향 ( Studies on the Phosphatic fertilizer Application Grassland IV. Effect of phosphatic fertilizer levals on the botanial compos
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 223~229
To find out the effects of phosphatic fertilizer application levels on the botanical composition, mineral contents and mineral nutrient deprivation of grasses and the chemical properties of soil, this expriment was arranged as a randomized complete block design with six treatments(0, 50, 100, 150, 200 and 250kg
/ha) and conducted at hilly land in Gwangju, Gyeonggi Province from September, 1989 to October, 1992. The results obtained are summarized as follows: The botanical composition of grasses without posphatic fertilizer application was poor but with 150kg
/ha application, remarkably increased in legume of grasses and decreaed in weed. As the phophatic fertilizer levels increase, P, Ca and Mg content of grasses were increased but N and K content tended not to be regular, and Ca/p and K/Ca+ Mg equivalent ratio were lowered. Up to 150kg
/ha application level, the mineral nutrient content deprived by dry matter yield was increased but with that over application, tend not to be increased. Most of applied mineral elements were accumulated at a subsurface of grassland and as the phosphatic fertilizer application levels increase, the available
and exchangeable Mg contents of the soil tended to be remarkably increased and exchangeable K content tended to be decreased, but pH, OM and exchangeable Ca content tended not to be regular.
Effect of Cattle Slurry Applications on the Infertilie Sloped Land
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 230~237
This experiment was carried out to determine the effects of cattle sluny and zeolite application for the improvement of germination and establishment of grasses in infertile slopped land. The best establishment and winter survival of grasses were observed in the plot of cattle slurry application. The dry matter yield of grasses was increased by 12% in the plot of compaction + cattle slurry application when compared with control. Alteration effect of soil pH was v q high and the content of organic matter was increased by addition of the soil conditioner.
Effect of Seeding Date and Fall Harvest Method on the Growth Charateristics , Forage Yield and Quality of Winter Rye
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 238~246
This experiment was carried out to determine the effects of seeding date and fall harvest method on the growth characteristics, forage yield and quality of winter rye(Seca1e cereale L.) at the forage experimental field, College of Agriculture and Life Sciences, SNU, Suweon from 5 September 1992 to 21 May 1993. The experiment was arranged in a split plot design with three replications. Main plots consisted of three harvests, no defoliation, cutting and grazing. Sub-plots consisted of seeding dates, early(5 September), mid(25 September) and late(l0 October). The results obtained are summari7d as follows; I . A 3-day difference in the first heading of rye was observed between no defoliation and fall grazing, while there was a 6day difference between early and late seeding dates. Therefore, the effect of seeding dates on the fist heading date of rye was larger than that of fall harvest methods. 2. CP content of rye with fall grazing was slightly higher averaged 16.5% compared with both fall cutting and no defoliated 1ye(15.6%). Mean CP content of rye at the early, mid and late seeding dates was 14.2, 14.5 and 19.1 %, respectively. 3. ADF content of rye was slightly higher with both fall cutting(29.99) and no defoliation(29.5%) than that of fall grazing(28.0%). ADF content of rye at the early, mid and late seeding dates was 30.7, 29.1 and 27.7%, respectively. Effect of fall harvest methods and seeding dates on NDF content of rye were similar to the observations made on ADF. 4. RFV and IVDMD of rye were lower with both no defoliation and fall cutting than fall grazing. but those of rye slightly increased with seeding dates progressed. 5. Dry matter yield of rye was the highest of 6,779 kg/ha with fall cutting, while the lowest yield of 6,240 kg/ha was obtained from no defoliation But no significant difference was found among the harvest methods. Dry matter yield of rye was significantly declined with later seedings. It is concluded that the highest forage yield of rye be possible from two harvest systems of fall and spring with earlier seeding rather than from one harvest system of spring.
Harvesting Date and Cultivar Effect on the Growth Charateristics , Forage Yield and Quality of Spring Sown Oats
Journal of The Korean Society of Grassland and Forage Science, volume 14, issue 3, 1994, Pages 247~256
This experiment was carried out to determine harvesting date and cultivar effects on growth characteristics, forage yield and quality of spring sown oats(Avena surivu L.) at the forage experimental field, College of Agricultural and Life Sciences, Swul National University, Suwwn from March 22 to June 20, 1993. The experiment was arranged in a split plot design with three replications. The main plots consisted of the harvesting dates such as early(24 May), mid(8 June) and late(20 June). The subplots consisted of different maturities of oat cultivm such as Speed oat, Cayuse, Foothill, Sv841034 and Magnum.