• Journal of The Korean Society of Grassland and Forage Science
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• v.4 no.1
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• pp.51-61
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• 1983

This experiment was carried out to determine the effects of different seeding rates of Italian ryegrass (Lolium multiflorum) and cutting frequency on the dry matter yield botanical composition of pasture mixtures in first harvest year. The experimental design was a split-plot design with three replication. The main plots were two seeding rates of Italian ryegrass at 0.3 and 1.0kg per 10a and the sub-plots were 3, 4, and 5 cutting frequency. The experiment was undertaken over a period 12 months from September 1981 to August 1982. The results obtained are summarized as follows: 1. The different seeding rates of Italian ryegrass had no effect on total day matter yield. 2. Over the experimental period, the total dry matter yield of pasture mixtures was increased with increasing the cutting frequency, but there was no significant. 3. It was found that dry matter yield of weeds clearly decreased with the high seeding rate of Italian ryegrass over the experimental period. 4. The high seeding rate of Italian ryegrass showed the trend toward the high yield of Italian ryegrass, and the low yield of orchardgrass and ladino clover. 5. At the early stage of the experiment, the botanical compositions of orchardgrass and ladino clover were decreased with the high seeding rate of Italian ryegrass. But at the final stage they were not influenced by the seeding rates of Italian ryegrass. From the above results it is suggested that the high seeding rate of Italian ryegrass give a good effect on the early forage yield and weed control, and the high cutting frequency maintain desirable botancial composition of orchardgrass and ladino clover in the pasture mixtures with Italian ryegrass.

• Journal of The Korean Society of Grassland and Forage Science
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• v.23 no.4
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• pp.277-282
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• 2003

This pot experiment was conducted in order to observe the effects of double superphosphate and fused phosphate application(T$_1$: control. T$_2$: double superphosphate application, T$_3$; fused phosphate application) on the seedling vigour, botanical composition, and yields of grass/clover mixed swards on newly reclaimed hilly soil. The results obtained are summarized as fellows: At the grassland establishment. the seedling vigour and yields of grass-clover mixed swards were much better by the T$_2$than the T$_3$. These favorable effects were more enhanced in white clover than orchardgrass. Compared with the T$_2$, the T$_3$resulted in the gradual increase of botanical composition and relative yield of white clover according to the cutting order. With the consideration of these results, double superphosphate could be favorable for pasture establishment and fused phosphate could be favorable for pasture management fertilizers.

• Journal of The Korean Society of Grassland and Forage Science
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• v.30 no.1
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• pp.49-58
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• 2010

This experiment was carried out to estimate the nutritive value of mixed-sowing winter forage crop and whole crop barley by investigating the effects of feeding mixed-sowing winter forage crop and whole crop barley in KBG (Korean black goat) on feed intake, average daily body weight gain, nutrient digestibility and nitrogen retention. The 12 male KBG were divided into four experimental groups - i.e. T1: barley silage added group, T2: mixed-sowing hairy vetch silage added group, T3: mixed-sowing field peas added silage, T4: mixed-sowing Italian rye grass added silage group. Three KBG per each treatment were allotted into individual metabolic cages by Latin-square design. The results from this study are as follow. The DMI (dry matter intake) and organic matter intake in T4 were significantly (p<0.05) higher than those in T1 and T3 and crude protein intake in T4 also recorded the highest among treatments (p<0.05). The highest values in intakes of ADF and NDF were observed in T4 followed by T2, T1 and T3 in order. The average daily body weight gains in T4 and T2 were significantly (p<0.05) higher than those in TI and T3. The dry and organic matter digestibility in T2 and T4 were significantly (p<0.05) higher than those in T1 and T3. The crude protein digestibility in T1 was significantly (p<0.05) lower than those in T2 and T4. The nitrogen intakes in T2 and T4 were significantly (p<0.05) higher than those in T3. The results obtained from this study suggested that the feeds supplemented with whole crop barley with hairy vetch and Italian rye grass mixture silage increased KBG productivity resulted from increases in feed intake, nutrient digestibility and nitrogen retention.

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.83-84
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• 1999

애기수영의 생태적 방제를 위한 초종간 경쟁을 통하여 애기수영의 생육을 억압하여, 기초적인 자료를 얻고자 하였다. 공시초종은 reed canarygrass, kentucky bluegrass, tall fescue, orchardgrass의 4초종으로 애기수영과 종자비율을 10:0, 8:2, 6:4, 4:6, 2:8: 0:10의 6수준으로 6월 중순에 파종한 후 9월초 3엽기의 개체를 혼파비율에 맞추어 1/2000a 크기의 pot에 각각 5개체씩 이식하고 이듬해 6월말에 조사를 실시하였다.(중략)

• Proceedings of the Korean Society of Grassland Science Conference
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• 2000.09a
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• pp.115.1-115
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• 2000

• Journal of The Korean Society of Grassland and Forage Science
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• v.12 no.3
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• pp.116-121
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• 1992

지난 20년간 방목 초지관리에 관해 국내 대학과 연구기관에서 발표된 성적을 간략히 고찰해 보는 것은 지금까지의 시험연구를 종합정리하고 앞으로의 연구방향을 제시하는데 나름대로 커다란 의미를 부여할 수 있을 것이다. 채초관리에 있어서는 그간 괄목할만한 성과가 거양되었으나 방목관리분야에 관한 시험연구는 전반적인 체계없이 단편적인 결과보고에 치우친 감이 많다. 초지의 방목관리와 관련되어 발표된 주요 연구로는 예취와 방목이용비교, 초기 방목관리, 방목시기, 방목강도, 휴목기간, 시비관리, 임간방목지 관리, 방목체계 확립 이용방법과 가축생산성, 혼파조합과 가축생산성, 초지 형태와 가축생산성 등이 있다. 최근 노동력 부족과 인건비 상승 및 수입개방 등 국내외적인 어려운 여건으로 볼 때 초지관리의 연구목표는 생력관리와 생산비 절감에 두어져야 하며, 특히 앞으로의 초지개발이 산지에서 이루어지고 우리나라 산지의 특수성에 미루어 방목관리 이용에 관해서는 다각적인 연구검토가 요망된다. 앞으로의 연구과제로서는 가족 노동중심의 방목관리, 농가규모의 적정방목시스템, 방목지에서의 적정 질소시비수준, 경사지 방목시 유지년한 연장과 토양유실 방지, 가축 분뇨의 초지환원과 환경오염 방지, 임간지에서 목초와 토양 및 나무피해와 방목효율증진, 전기목책 등 간이목책시설 및 기타 초지생산과 방목가축 생산 효율 증진방안 등을 들 수 있다.

• Journal of The Korean Society of Grassland and Forage Science
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• v.24 no.3
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• pp.245-252
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• 2004

Experiment was carried out to find the fertilizing effects of 8 different application rates of swine compost fermented with sawdust(SCS) including Chemical fertilizer(CF) on forage yield and soil chemical characteristics of mixed pastures sown in Sep. 1993 at National Livestock Research Institute, RDA., in Suwon during low years. It was arranged in a randomized complete block design with three replicates. Dry matter yield were shown at similar among treatments except Control and $50\%$ SCS of standard amount plot. In botanical composition, the legume and weeds percentages of each treatment were increased as advancing year. The final year's legume percentage were high in line with SCS fertilizing plots($39\%{\sim}43\%$), SCS + CF plots($30\%{\sim}41\%$) and CF plot($32\%$). In productions of TDN, NE and crude protein yield, SCS or SCS($75\%$) + CF($25\%$) were nearly same comparing those of CF, respectively. Phosphate, potassium, magnesium contents and K/(Ca + Mg) except calcium contents of those SCS fertilizing plots in plant were generally high with comparing CF. Those contents were proportional according to the fertilizing amount These result indicate the possibility to substitute chemical fertilizer for SCS($75\%$, 25ton/ha) + CF, $25\%$) as manure-N 210 kg/ha, but might be considered accumulation phosphate in the soil.

• Journal of The Korean Society of Grassland and Forage Science
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• v.34 no.1
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• pp.9-14
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• 2014

This experiment was carried out to order to determine the forage production and soil characteristics in mixtures of Italian ryegrass (IRG) and annual legumes at the riverbed. The IRG and hairy vetch mixture had the highest in fresh, dry matter (DM) as well as total digestible nutrients (TDN) yields among the forage mixtures. Further IRG and hairy vetch mixture had the highest in DM content. The crude protein (CP) content of IRG and hairy vetch mixture was the highest, Whereas non-fiber carbohydrate (NFC) and TDN contents were lower compared to other mixtures. The total nitrogen (TN) of IRG and hairy vetch mixture was the highest due to high nitrogen fixation in the riverbed soil. The IRG and rape mixture was the highest in organic matter (OM) of soil. Moreover, the available $P_2O_5$ of soil in IRG and crimson clover mixtures was higher compared to other mixtures. Further, the IRG and hairy vetch mixture was the highest in cation exchange capacity (CEC) content. Therefore IRG and hairy vetch mixture is more suitable in forage mixtures due to high forage production and protein as well as high soil CEC content at the riverbed.

• Journal of The Korean Society of Grassland and Forage Science
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• v.16 no.1
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• pp.53-60
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• 1996

A field experiment was carried out to determine the effects of grazing stage and intensity on the forage production and nutritive value in orchardgrass dominant pasture, 1989 and 1990. The grazing stages were 20- 25m, 30-35cm and 40-45cm of plant height, and high and medium grazing intensity were set by the number of growing cows (initial body weight: 230-250kg), which was adJusted according to the pasture production. The high level of grazing intensity was 150% of medium intensity. Annual grazing frequency was 10 times in 20-25cm. 8 times in 30-35cm. and 6 times in 40-45cm of plant height. Dry matter(DM) yield was increased with increasing of plant height at grazing : 7,090kg in 20-25cm 7,882kg in 30-35n and 8,260 kgha in 40-45cm of height. Higher DM was observed at medium grazing intensity. In spring, daily DM production was more vigorous than those in summer and autumn season. Cmde protein (CP), digestible DM, and DM intake were decreased with increasing of plant height at grazing. CP content was 25.8% in 20-25cm 22.4% in 30-35m and 19.2% in 40-45cm, while the contents of neutral detergent fiber and acid detergent fiber were increased with higher plant height. Relative feed value was 11 1.2 in 20-25cm, 104.4 in 30-35n and 99.6 in 40-45cm. Also nutritive value of pre-grazing pasture plants was remarkably higher than that of post-grazing, and not significant differences of nutritive value were found between grazing intensity. From the above mults, it may be concluded that optimum plant height for grazing was 20-25cm and 30- 35cm in pasture mixtures dominated by orchardgms, and medium grazing intensity was very desirable for pasture productivity.

• Journal of The Korean Society of Grassland and Forage Science
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• v.16 no.4
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• pp.260-266
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• 1996

To find out the residual effect of phosphate fertilization level on the dry matter yield and nutrient plloductivity of pasture plants, this experiment was arranged as a randomized complete block design with six treatments(0-0, 50-50, 100-65, 150-65, 200-65 and 250-65kg $P_2O_5$), those were composed of three $P_2O_5$ fertilization level(0,50 and 65kg $P_2O_5$ after phosphate fertilization trial with six treatments(0, 50, 100, 150, 200 and 250kg $P_2O_5$/ha) from 1989 to 1992, and conducted at hilly land in Kwangju, Kyonggi Province from 1993 to 1994. The results obtained are summarized as follows : As the available phosphate of soil increase, the early growth and cover degree of pasture plants wintered were more favorable. With 150-65kg $P_2O_5$ application for two years, the average dry matter yield of grasses, 9,862kglha was similared to that of 200-65kg $P_2O_5$/ha. The crude protein and energy productivity of pasture plants tended to increase as available phosphate of soil was increased, but those were not different between 150-65 and 250-65kg P 2 0 4 a Efficiency of $P_2O_5$ was highest at $P_2O_5$ 150-65kg/ha fertilization, wHich produced dry matter 11 1.8kg. net energy lactation(NEL) 67 1.2M.f per I kg P205. Therefore, phosphate fertilization is recommended strongly application with 150kg/ha for three years after pasture establishment, and then 65kg/ha for two years a reasonabl management in hilly grassland.