• 한국유기농업학회지
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• 제6권1호
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• pp.99-108
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• 1997

The aim of this experiment was to investigate the effect of applying times of cattle slurry on dry matter yield of Orchardgrass, when cattle slurry applied at rates of 30m3(average mineral nitrogen fertilizer equivalent to 120kg) per ㏊ in different dressing times, such as S1(1st and 2nd growth), S2(1st and 3rd growth), S3(1st and 4th growth), S4(2nd and 3rd growth), S5(2nd and 4th growth) and S6(application for 3rd and 4th growth). The results were as follows. 1. The average annual yields of dry matter were produced 6.36~7.42 ton per ㏊ in 1995~1997 when cattle slurry applied at rates of 30m3(average mineral nitrogen fertilizer equivalent to 120kg) per ㏊ in different dressing times, especially these tendency were shown higher annual dry matter in S4 plot9application for 2nd and 3rd growth). Those were higher 2.48~3.54 tons or 1.22~2.28 tons per ㏊ than the yields from non-fertilizing or phosphrous and potassium fertilizing. 2. Relative yields of annual dry matter in cattle slurry application plots were 164(S2 plot)~191(S4 plot)% in comparing with non-fertilizing plot. 3. Dry matter yields according to cutting frequency were highest at the 2nd cut(1.50 ton) and were in the order 3rd cut(0.95 ton)>4th cut(0.75 ton)>1st cut(0.69 ton/㏊). Also, those of cattle slurry application plot per ㏊ were in the order 2nd cut(2.02~2.73 tons)>3rd cut(1.56~2.08 tons)>4th cut(1.07~1.68 tons)>1st cut(1.11~1.45 tons/㏊). 4. Relative yields of annual dry matter in cattle slurry application plots were 164~219, 161~210, 143~212 and 135~182% at the 3rd, 1st, 4th and 2nd cut, respectively in comparing with non-fertilizing plot. 5. The efficiencies of nitrogen on dry matter yield(kg DM/kg N) were 18.1, 21.3 and 34.5kg DM/kg N when cattle slurry applied to Orchardgrass at rates of 30m3 (average mineral fertilizer equivalent to 120 kg) per ㏊ in 1993, 1994 and 1995, respectively, especially these tendency were shown higher efficiencies in S4 plot(application for 2nd 3rd growth). On the other hand, those of the same level fertilization of mineral nitrogen were 43.8, 19.2 and 13.4 kg DM/kg N in 1993, 1994 and 1995, respectively.

• 한국작물학회지
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• 제48권3호
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• pp.276-280
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• 2003

남부지역에 적응한 사초용 유채의 춘파 품종을 선발하기 위하여 3월 25일에 파종한 그 결과는 다음과 같다. 1. 다수성이며 조단백질 함량과 in vitro dry matter digestibility(IVDMD)가 높고 NDF, ADF, cellulose 및 lignin 함량이 낮아서 영양가가 우수한 춘파 용 사초 유채는 Velox 품종이었다. 2. Velox품종은 초장이 길고 경태가 두꺼웠으며 주경의 잎도 많았고 생체중 과 총건물수량이 가장 많았다. 3. 모든 형질에 대한 유전력은 대부분의 형질에서 높았으나 hemicellulose에서만이 낮게 평가되었다.

• 한국초지조사료학회지
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• 제23권2호
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• pp.121-128
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• 2003

본 시험은 초지를 상번초형 및 상+하번초형으로 혼파조합하여 조성하였을 때 목초의 건물수량, 품질 및 식생구성에 미치는 영향을 비교하고자 1999년 9철부터 2002년 12월까지 충남대학교 농업생명과학대학내 부속 초지시험포장에서 수행하였다. 공시된 혼파초지는 상번초형 혼파초지{orchardgrass, Potomac 40+tall fescue, Fawn 20+Festulolium braunii, Paulita 10+perennial ryegrass, Reveille 10+timothy, Climax 10+ red clover, Kenblue 5+ alfalfa, Vernal 5%)와 상ㆍ하번초형 혼파초지(orchardgrass, Potomac 40+tall fescue, Fawn 20+Kentucky bluegrass, New port(turf type) 10+redtop, Barricuda(turf type) 10+perennial ryegrass, Palmer III(turf type) 10+red fescue, Flyer II(turf type) 5+white clover, Regal 5%}의 두 처리를 두어 시험하였으며, 얻어진 시험결과는 다음과 같다. 1) 3년 평균 건물수량은 상ㆍ하번초형 혼파초지가 13,732kg/ha으로 상번초형 혼파초지의 13,117kg/ha 보다 약간 높았으나 유의적인 차이는 나타나지 않았다. 2) 상번초형 혼파초지와 상ㆍ하번초형 혼파초지간에 화학적 성분의 뚜렷한 차이는 없었다. 그러나 상번초형 혼파초지에서는 cellulose와 lignin 함량이 다소 높은 경향을 보였다. 한편, 건물소화율은 상ㆍ하번초형 혼파초지에서 다소 높은 결과를 보였다(p < 0.05). 3) 3년 평균 조단백질 건물수량은 두 처리간 차이가 인정되지 않았으나, 가소화건물수량은 상ㆍ하번초형 혼파초지가 10,670kg/ha으로 상번초형 혼파초지의 가소화건물수량 9,955kg/ha에 비하여 높은 결과를 가져왔다(p < 0.05). 4) 연차가 경과함에 따라 상번초형 혼파초지에서 식생을 높게 유지한 초종은 tall fescue, alfalfa 및 orchardgrass 등이었으며 timothy는 없어진 반면에, 상ㆍ하번초형 혼파초지에서는 white clover, tall fescue 및 orchardgrass 등의 식생비율이 높았으며, redtop, red fescue와 같은 하번초 초종의 식생도 비교적 고르게 유지되었다. 따라서, 상번초형 혼파초지에 비하여 상ㆍ하번초형 혼파초지는 목초의 건물수량과 품질에는 큰 영향을 미치지 못하였으나, 건물소화율 및 가소화건물수량이 높았고(p < 0.05), 연중 고르게 식생을 유지할 수 있었던 것으로 보아 생장습성이 다른 초종을 다양하게 혼파 이용하는 것도 좋을 것으로 사료된다.

• 한국초지조사료학회지
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• 제5권1호
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• pp.13-21
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• 1985

본(本) 시험(試驗)은 추파(秋播) 이탈리안라이그라스의 추계예취시취(秋季刈取時取)가 목초(牧草)의 재생(再生), 탄수화물축적(炭水化物蓄積) 및 건물수량(乾物收量)에 미치는 영향을 구명(究明)하기 위(爲)하여 포장시험(圃場試驗)을 수행(遂行)하였으며 결과(結果)를 요약(要約)하면 다음과 같다. 1. 건물수량(乾物收量)은 예취시기(刈取時期)가 빠른 구(區)일수록 높았고(P<0.05), 예취시기(刈取時期)가 제일 늦은 구(區)는 무예취구(無刈取區) 보다도 수량(收量)이 낮았다. 2. 건물중(乾物中) 전수용성탄수화물(全水溶性炭水化物)(TSC)의 함량(含量)은 일번예취직후(一番刈取直後)에 약간(若干) 떨어졌다가 재생장(再生長)에 따라 점점(漸漸) 높아졌으며 이번초(二番草) 예취기(刈取期)에 가까울수록 다시 떨어졌다. 기온(氣溫)이 영하(零下)로 하강(下降)하기 1주일전(週日前)의 TSC 함량수준(含量水準)은 그루터기, 줄기, 잎 별(別)로 모두 예취시기(刈取時期)간 빠른 구(區)일수록 고수준(高水準)이었으며 (P<0.01), 이번초(二番草)와 건물수량(乾物收量)과의 사이에 상관(相關)이 성립(成立)되었다(P<0.05) 3. 개체군(個體群) 생장속도(生長速度)(CGR)는 평균기온(平均氣溫)이 $8^{\circ}C$에서 하강(下降)할수록 떨어졌으며 상승(上昇)할수록 높았다. 상대엽면적생장율(相對葉面積生長率)(RLGR)과 순동화율(純同化率)(NAR)은 각구(各區) 모두 재생(再生)30일간(日間)이 가장 높았으며 재생후기(再生後期)에는 저하(低下)되었다. 엽면적지수(葉面積指數)(LAI)의 증대(增大)는 각구(各區) 모두 예취후(刈取後) 50일(日)까지는 빨랐으며 그 후(後)에는 완만하였고 최대치(最大値)의 범위(範圍)는 $3.4{\sim}5.8$이었다. 또한 예취후(刈取後) 70일(日)까지의 LAI가 큰 구(區)일수록 이번초(二番草)의 건물수량(乾物收量)이 높았다. 4. 생장(生長)이 억제(抑制)되는 저온기(低溫期)의 TSC, LAI ,CGR, NAR 및 LWR와 이번초건물수량(二番草乾物收量)과의 사이에 상관(相關)이 인정(認定)되엇으며, 그 공헌도(貢獻度)는 LWR>LAI>TSC>NAR>CGR의 순(順)이었다.

• 한국초지조사료학회지
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• 제26권4호
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• pp.207-214
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• 2006

본 시험은 2002년 9월부터 2004년 12월까지 충남대학교 농업생명과학대학 내 부속 초지시험포장에서 수행하였다. 공시초종은 청예웅 호밀(Koolgrazer)과 헤어리베치(Common)를 공시하여 주구로 호밀 단파, 호밀 80%+헤어리베치 20% 혼파, 호밀 60%+헤어리베치 40%혼파 및 헤어리베치 단파 등의 4 파종유형과 세구로 수잉기, 출수기, 개화기 및 유숙기 등의 4 수확시기를 두어 분할구배치법 3반복으로 시험하였으며, 얻어진 결과는 다음과 같다. 2년 평f ha당 건물수량은 파종유형과 수확시기에 따라 차이를 보여, 호밀 단파구(9,776kg)가 호밀 80%+헤어리베치 20% 혼파구(9,045kg)나 호밀 60%+헤어리베치 40% 혼파구(8,272kg) 및 헤어리베치 단파구(5,424kg)에 비하여 높은 결과를 나타내었고, 모든 처리구에서 수확시기가 진행됨에 따라 유의적으로 증가되었다(p<0.01). 화학적 성분도 파종유형과 수확시기에 따라 차이를 보여, CP 함량과 DMD는 헤어리베치 단파구에서 높았던 반면에 섬유소물질의 함량은 가장 낮았으나, 호밀 단파구에서는 상반되는 결과를 보였다(p<0.01). 조단백질수량(CPDM)과 가소화건물(DDM)수량은 호밀 80%+헤어리베치 20% 혼파하여 개화기${\sim}$유숙기에 수확하는 것이 가장 높았다.(p<0.01). 이상의 결과로 보아, 호밀이나 혜어리베치의 단파 이용보다는 호밀에 헤어리베치를 20% 정도 혼파하여 개화기${\sim}$유숙기에 수확하는 것이 단위 면적당 수량과 사료가치를 높일 수 있는 한가지 방법이라 하겠다.

• 한국초지조사료학회지
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• 제12권1호
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• pp.67-70
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• 1992

The experiment was conducted to evaluate the effect of the different seeding date on the dry matter yield and chemical composition of oat for forage. The crops wrc sccdcd on August 3l(lirst). Scptember IO(second). and September 20(third seeding date) and were taken on November 24, 1991. The results are summarized as follows : 1. The plant heights were 68, 54 and 40 cm at first, second, and third seeding date, respetively. 2. Dry matter (DM) content decreased with delaying seeding date from first to third seeding date. DM varied from 18.6 to 14.9 %. 3. Leaf weight ratio increased with delaying seeding date from first to third seeding date, varied from 51 to 67 %, but stems decreased from 49 to 33 %. 4. The dry matter yields per ha decreased with delaying seeding date: it was 5.670. 3.960 and 2.310kg at first, second and third seeding date. Significant differences has been obtained among date(P<. 05). 5. The content of crude protein increased with delaying seeding date from first to third seeding date. varied from 16.3 to 22.6%. but NDF and ADF content decreased.

• 한국작물학회지
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• 제45권2호
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• pp.128-133
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• 2000

This study was carried out to investigate the effect of forms and levels of nitrogen fertilizer on plant growth and essential oil production of Agastache rugosa. Calcium nitrate had more influenced on length and width of leaves and lateral branch length than did urea. When nitrogen fertilizer level was increased from 12 kgN/I0a to 24kgN/I0a, plant growth was stimulated and dry matter of leaf and inflorescence were increased. Top dry matter of plant with calcium nitrate treatment (38.4 g) was heavier than that of urea treatment (32.8 g). Interactions among accession and nitrogen form and nitrogen rate were not significantly different for top dry matter. The forms and rate of nitrogen fertilizer did not affect estragole content. The estragole contents was higher in leaf (91.8%) than that of inflorescence (81.3%). While the essential oil content was not affected by different nitrogen forms, nitrogen level affected the essential oil contents positively by increasing dry matter. Essential oil yield was not affected by accession or nitrogen form, but by nitrogen rate. With increasing N application from 12kgN/I0a to 24 kgN/I0a, essential oil yield was increased by 95.8 %.

• 한국초지조사료학회지
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• 제9권2호
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• pp.108-112
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• 1989

To determine optimal plant density of forage rape in southern areas of Korea, Velox, the highest yielding variety among seventeen introduced varieties of forage rape, was grown under five different plant densities. The results obtained are summarized as follows: 1. Yield components such as stem diameter, number of main stem,leaves, number of branches and number of branch leaves and fresh yield were highest at the plots with 50cm row spacing and 30cm plant spacing. 2. Dry matter yield, content of crude protein, IVDMD and digestible dry matter yield were highest at the plots of broadcasting. 3. Since plants under high density were high in plant length and small in stem diameter, contents of crude fiber such as NDF, ADF, cellulose and lignin were lowest at the plots of broadcasting.

• 한국초지조사료학회지
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• 제16권1호
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• pp.75-80
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• 1996

The corn is one of the most important forage crop in Korea. The harvest time for silage affects dry matter (DM) yield and silage quality. This study was carried out to determine the effect of harvest time on the DM yield and nutritive value of corn forage at the Experimental Livestock Farm, College of Agriculture and Life Sciences, Seoul National University, Suweon in 1991. Forage DM yield and DM content of corn forage significantly increased mainly due to increase of ear. And also the ear to total DM ratio increased from 30% to 55% as the harvest was delayed. Chemical composition of the corn forage was improved by reduction in crude fihr, neutral detergent fiber and acid detergent fiber as the harvest was delayed. This results indicated that the harvest time of corn forage plays an important role to determine DM yield and DM contents for silage materials.

• 한국초지조사료학회지
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• 제11권3호
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• pp.145-152
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• 1991

This experiment was carried out to investigate the effects of liming, manure application, and inoculation with Rhizobium on the early growth, nodulation, seedling establishment, winter survival, and forage yield and quality of alfalfa(Medicago sativa L.) at the Experimental Livestock Farm, College of Agriculture, Seoul National University, Suweon in 1985 and 1986. The results obtained are as follows: 1. Seedling vigor and nodule formation of alfalfa at early stage were the best in the treatments of liminginoculation( L1) and liming-manure-inoculation(LM1). 2. Seedling establishment was not significantly affected by the treatments of liming, manure application, nodulation and the combination of these. 3. The LI and LMI treatments showed the highest winter survival of 94.3 and 83.5%, respectively, but the lowest winter su.rvival of 55.9 and 58.5% was found in no treatment(None) and inoculation( I ), respectively. 4. No differences in crude protein(CP1, acid detergent fiber(ADF) and neutral detergent fiber(NDF) contents were found among the treatments. 5. There were significant differences in the total dry matter yield of alfalfa among the treatments. The total dry matter yields of 10,618, 11,830, 11,855 and 13,456 kg/ha from the treatments of L, LM, LI and LMI, respectively, were significantly higher than those of None, M and I treatments. 6. Based on the results of the experiment, it appears that the dry matter yield of alfalfa could be enhanced by the treatments of liming with Rhizobium inoculation and also liming, manure application and Rhizobium inoculation as a practical method.