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고온기 초지의 예취관리에 관한 연구 2 . 고온기 예취방법이 Orchardgrass 초지의 재생 , 목초고사 , 잡초발생 및 수량에 미치는 영향
서성,한영춘,박문수 ( S . Seo,Y . C . Han,M . S . Park ) 한국축산학회 1986 한국축산학회지 Vol.28 No.1
Optimum pasture management during the summer season is an important factor to maintain good regrowth and persistence of pasture. This field experiment was carried out to investigate the effects of the cutting management on the regrowth, dead plants, weed appearance, root activity and D.M. yield of orchardgrass pasture during the mid-summer season. Two different the third cutting times (July 15 and Aug. 3) as the mainplot, and three different cutting heights (3,6 and 9 ㎝) at the third cut as the subplot were treated, and the experiment was done at Livestock Experiment Station, in Suweon, 1985. 1. Temperature of soil surface and underground after the third cut tended to decrease by 1-4℃C as cutting height was high, and soil moisture content also decreased as stubble height was high. 2. Regrowth leaf length, leaf area and root activity of orchardgrass after the third cut increased significantly with the high cutting height (P$lt;0.05). 3. The percentage dead plants and weeds after the third cut were significantly decreased (P$lt;0.05) with the high stubble height during the mid-summer season, and main weeds appeared after the third cut were Digitaria sanguinalis$gt;Portulaca oleracea$gt;Cyperus iria, Rumex cripus, and so on. 4. Regrowth dry matter yield at the fourth and fifth cut were significantly increased (P$lt;0.05) with the high stubble height, regardless of cutting time. 5. From the above results, it is suggested that the 9㎝ cutting height during the mid-summer season is the most effective for good regrowth, weed control and forage yield of orchardgrass pasture.
서성,Seo, Seong 한국단미사료협회 2006 피드저널 Vol.4 No.10
반추동물은 매일 일정량 이상의 조사료를 반드시 섭취하여야 하나 우리나라에서는 조사료 생산기반이 취약하여 양질 조사료의 자급률이 높지 않은 실정이다. 따라서 많은 농가에서는 볏짚과 배합사료 위주로 사양하고 있으며 부족한 조사료는 수입에 의존하고 있다. 본 글에서는 최근 재배면적인 크게 증가하고 있는 사료용 총체보리의 사료적 가치, 곤포사일리지 조제와 품질 및 한우와 젖소 급여효과 등을 연구 분석하여 친환경적 양질조사료 자급달성을 도모하고자 한다.
초지의 관개효과에 관한 연구 1 . 관개와 질소시비수준이 토양수분장력과 목초의 재생 및 수량에 미치는 영향
서성,박문수,한영춘,이종열 ( S . Seo,M . S . Park,Y . C . Han,J . Y . Lee ) 한국축산학회 1986 한국축산학회지 Vol.28 No.2
Pasture irrigation has been much paid attention to for the increase of forage yield and persistence in dry area. This field experiment was conducted to determine the effects of irrigation and nitrogen(N) fertilization on the soil moisture retention, regrowth and yield of orchardgrass/ladino clover mixtures during the dry season. Irrigation point was 0.5bar, irrigation method was sprinkler system, and N levels (subplot) were 140, 280 and 420 ㎏/㏊. The experiment was performed at Livestock Experiment Station in Suweon, 1985. The results are summarized as follows: 1. Considering the meteorological conditions during the experimental period, the temperature was higher by 0-2℃ than that of average year, and the dry season was prolonged from May 20 to June 26. 2. With irrigation the temperature of soil surface and underground was decreased by 4.4℃ and 1.6℃, respectively. 3. The regrowth plant length, leaf area and dry weight of grasses with irrigation were markedly increased during the dry season. Also under the irrigation condition the regrowth speed was significantly increased with increasing level of N, while that of unirrigated pasture was no differences between the plots of N 280 and N 420 ㎏/㏊. 4. With irrigation dry matter yield (5.9 t/㏊) and fresh yield (35.4 t/㏊) during the dry season (at the second and the third cut) were significantly (P$lt;0.05) increased by 36% and 50%, respectively. 5. Yield of irrigated pasture was rapidly (P$lt;0.05) increased with increasing level of N application. However, that of unirrigated pasture was shown no difference between the plots of N 280 and N 420 ㎏/㏊.
질소시비수준과 예취높이가 청예용 수단그라스계 잡종의 신지의 발생과 건물량 및 수량에 미치는 영향
서성,김동암 ( Sung Seo,D . A . Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.5
Sorghum-sudangrass hybrid (Sorghum bicolor (L.) Moench) is one of the most important annual grasses utilized for supplemental summer forage. For better forage production, this experiment was carried out to investigate the effect of the different nitrogen (N) rate and cutting height on the appearance, dry weight, death of new bud (branch and tiller), and dry matter yield of sorghum-sudangrass hybrid. The cultivar used in the present study was Pioneer 988. The experiment was arranged as a split plat design and undertaken over a period of 5 months from May to September, 1981 and 1982 in Suweon, Korea. The frequency of the branching was decreased as the low stubble height, and the rate of the tillering was decreased in the high stubble. And the low cutting height resulted in the increased number of dead bud. However, the appearance and death of branch and tiller were not influenced by high N. Tillering is more important than branching in influencing yield. The yield of forage mostly depended on the tiller, regardless of cutting height, especially at the low stubble height. And minor portion of the yield was resulted from the branch. No significant difference between dry matter yield and cutting height was found. However, the yield tends to increase in the high stubble height and high N fertilization. The regrowth and dry matter yield were influenced by climatic conditions significantly. These results suggests that the low stubble height of 5 ㎝ was recommended on sunny days with high temperature, while the high stubble of 15 ㎝ on rainy days or low temperature, and the 150 to 200 ㎏/㏊ N fertilizer for the maximum production of forage sorghumsudangrass hybrid.
서성,Seo, Sung 한국초지조사료학회 1992 한국초지조사료학회지 Vol.12 No.3
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.