외래잡초 왕도깨비가지(Solanum viarum)의 종자발아에 관한 연구

오진보(Oh, J. B.),강익범(I. B. Kang),송창길(C. K. Song) 한국잡초학회 2012 한국잡초학회 별책(학술대회 초록집) Vol.32 No.1

제주매조의 주당본수에 따른 주요형질 사초수량 및 조성분 변화

조남기,송창길,김인식,조영일,오은경 한국동물자원과학회 2001 한국축산학회지 Vol.43 No.6

본 연구는 제주지역에서 주당 본수(1, 2, 3, 4, 5 및 6본)에 따른 제주매조(Setaria italica Beauvois)의 주요형질, 수량성 및 사료가치를 검토하고, 가축의 조사료로 이용하기 위하여 2000년 5월 13일부터 8월 14일까지 수행하였으며, 그 결과를 요약하면 다음과 같다. 이삭 출현일수는 83일에서 87일로 주당본수간에 큰 차이가 없었으나, 본수가 많을수록 이삭출현일수는 지연되는 경향이었다. 초장은 주당 1본에서 183.3㎝였던 것이 주당 3본에서 187.1㎝로 길어졌으나, 본수가 그 이상으로 증가되면 점차적으로 짧아져서 주당 6본에서 초장은 163.9㎝였다. 엽장, 엽폭, 엽수, 절수, 경직경 및 엽록소 측정치는 주당 본수가 1본에서 6본으로 많아질수록 왜소한 경향이었다. 생초수량, 건물수량, 조단백질 수량 및 TDN 수량은 주당 3본 파종구에서 각각 55.02MT/ha, 15.38MT/ha, 1.68MT/ha, 7.18MT/ha으로 가장 높았으나, 그 이상과 그 이하의 본수에서는 점차적으로 감수되었고, 주당 6본에서는 TDN 수량이 4.07MT/ha로 감수되었다. 주당 본수가 1본에서 6본으로 많아짐에 따라 조단백질 함량은 10.4%에서 12.0%로, 조지방 함량은 1.5%에서 1.6%로, 가용무질소물은 36.8%에서 38.2%로, TDN 함량은 45.9%에서 48.2%로 직선적으로 증가된 반면 조회분 함량은 9.2%에서 8.4%로, 조섬유 함량은 36.2%에서 33.7%로 감소되는 경향이었다. Jeju Itallian millet was grown at six plants per hill (1,2,3,4,5,6) from May 13 to Aug. 14, 2000 at Jeju island to determine influence of plants per hill on agronomic characters, forage yield and quality. Days to heading was increased as number of plants per hill was decreased. Plant height with three plants per hill (187.1㎝) was the longest, while with six plants per hill (163.9㎝) was the shortest. Leaf length, leaf width, the number of leaves, the number of nodes, stem diameter and SPAD reading values gradually decreased as the number of plants per hill was increased. Fresh forage yield, dry matter (DM) yield, crude protein (CP) yield and total digestible nutrient (TDN) yield were the greatest (55.02, 15.38, 1.68, 7.18MT/ha) at the three plants per hill. TDN gradually decreased to 4.07MT/ha in six plants per hill. Crude protein content increased from 10.4 to 12.0%, ether extract content from 1.5 to 1.6%, nitrogen free extract content from 36.8 to 38.2 and TDN content from 45.9 to 48.2%, but crude fiber content decreased from 36.2 to 33.7% and crude ash content from 9.2 to 8.4% as the number of plants per hill was increased.

제주지역에서 질소분시에 따른 귀리의 생육특성 , 사초수량 및 조성분 변화

조남기,조영일,송창길,송승운,오은경 한국동물자원과학회 2001 한국축산학회지 Vol.43 No.4

This study was conducted at a volcanic ash soil of Jeju island from 1997 to 1998 to determine the optimum frequency of split N application for forage production of oats. Nitrogen fertilizer was applied with 240㎏ N/ha, and frequencies of the split applications were 1, 2, 3, 4 and 5 times. Days to heading increased from 160 to 163 days as N was split-applied from one to five applications. Plant height was greatest(195.7㎝), followed by nitrogen application of at five applications. Generally plant height was shortest as the number of splitting nitrogen application treatments was decreased. This pattern held for leaf length, leaf width, and culm length which were greatest in four and five applications respectively, but no. of grains per panicle and No. of spikelet per panicle which were increased in three applications with 54.0 and 22.2 respectively. Fresh forage yield increased from 36.63 to 51.70MT/ha, dry matter(DM) yield from 6.47 to 8.43MT/ha, crude protein(CP) yield from 0.75 to 1.20MT/ha, total digestible nutrients(TDN) yield from 3.22 to 4.65MT/ha as N was split-applied from one to four applications, and then decreased to 51.07, 7.63, 1.12 and 4.48MT/ha respectively, in five split applications. Grain yield increased from 4.70 to 5.67MT/ha as N was split-applied from one to three applications and then decreased to 5.07MT/ha in five applications. This pattern held for test weight and 1,000 grains weight which were heaviest in three applications with 366.5 and 37.8g, respectively. Nitrogen uptake increased from 120 to 191.2㎏/ha as N was split-applied from one to four applications, and then decreased to 178.7㎏/ha in five split applications. Nitrogen use efficiency decreased from 53.9 to 42.7 ㎏ DM/kg N with increasing split N applications. Crude protein content increased from 11.6 to 14.6%, ether extract content from 2.3 to 4.0%, nitrogen free extract content from 39.7 to 41.6%, and TDN content from 49.8 to 57.4%, but crude ash content decreased from 8.7 to 6.1% and crude fiber from 31.6 to 27.4% as N was split-applied from one to five applications. These results indicate that the optimum frequency of split N applications is oats in volcanic ash soils of Jeju island.

제주지역에서 파종량 차이에 따른 귀리의 생육특성 , 사초수량 및 조성분 변화

조남기,조영일,송창길,송승운,오은경 한국동물자원과학회 2001 한국축산학회지 Vol.43 No.4

Oats was grown at five seeding rates(90, 110, 130, 150 and 170㎏/㏊) from Nov. 8, 1998 to June 8, 1999 at Jeju island to determine influence of seeding rate on agronomic characters and forage yield and quality. Days to heading and days to maturing increased 164-166 and 206-208 days as seeding rate increased from 90 to 170㎏/㏊. The plant height increased from 118.5 to 122.6㎝ as seeding rate was increased from 90 to 150㎏/㏊ and then decreased to 122.1㎝ at a rate of 170㎏/㏊. This pattern held for leaf length, leaf width and culm length which were greatest in four seeding rate respectively, but no. of grains per panicle and no. of spikelet per panicle which were decreased as seeding rate increased from 90 to 170㎏/㏊. As seeding rate increased from 90 to 150㎏/㏊, fresh forage, dry matter, crude protein and total digestible nutrients(TDN) yield increased from 29 to 43.43, 4.77 to 8.27, 0.55 to 1.10 and 2.33 to 4.39MT/㏊, respectively, and then decreased with further increased seeding rates. Grain yield was increased from 1.33 to 6.10MT/㏊ as seeding rate was increased from 90 to 130㎏/㏊ and then decreased from 5.50 to 4.50MT/ha at the 150 and 170㎏/㏊ seeding rates. Test weight and 1,000 grains weight decreased as seeding rate was increased. Crude protein, ether extract, nitrogen free extract and TDN content increased 11.5 to 13.8%, 2.0 to 3.1%, 37.6 to 39.2%, 48.8 to 54.2% respectively, but crude fiber content decreased 35.1 to 32.2% and crude ash declined 8.5 to 6.5% as seeding rate increased from 90 to 170㎏/㏊. The optimum seeding rate to obtain the highest TDN yield was estimated to be 167.5㎏/㏊.

질소시비수준이 제주재래단지무의 성장 , 수량 및 사료가치에 미치는 효과

조남기,조영일,송창길,오태수,부창훈 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.5

In order to determine the influence of nitrogen on agronomic characters, forage yield and quality, a Cheju Native Danji radish was cultured on the volcanic ash soil at the Experimental Farm of Cheju University under the seven levels of nitrogen rates (0, 50, 100, 150, 200, 250, 300 ㎏/㏊) from April 17 to June 20, 1999. The flowering time was delayed from 52 to 55 days after seeding as the nitrogen rate increased. The plant height increased by increase of nitrogen rate, showing longest at 300 ㎏/㏊ with 93cm and shortest at no application plot with 68㎝. The difference on leaf number and root length by nitrogen rates showed a similar tendency to the plant height. Also total fresh yield, forage and root fresh weight, and forage dry matter were gradually increased by the increase of nitrogen application amount, accordingly the total fresh yield showed the 40.47 MT/㏊ and 83.30 MT/㏊ at 0 and 300 ㎏/㏊ of nitrogen application, respectively. As the nitrogen rate increased from 0 to 300 ㎏/㏊, the content of crude protein and total digestible nutrients significantly increased from 17.1% to 32.2% and from 46.9 to 68.9%, respectively. And the ether extract content and nitrogen free extract content were slightly increased. While the contents of crude ash and crude fiber decreased from 19.7% to 15.8% and from 14.9% to 11.6%, respectively.

제주지역에서 재식밀도에 따른 양마의 생육특성 , 수량 및 조성분 변화

조남기,조영일,송창길,고지병,강봉균 한국동물자원과학회 2001 한국축산학회지 Vol.43 No.5

Kenaf(Hibiscus cannabinus L.) was grown at six planting densities(50 x 40㎝, 50 x 30㎝, 50 x 24㎝, 50 x 20㎝, 50 x 17㎝ and 50 x 15㎝) from 25 April to 25 Sep. in 1999 at Jeju island to determine the optimum plant density. As plant density increased, from 17 to 43 plants per ㎡ plant height increased linearly from 252.2㎝ to 295.1㎝. As planting density increased, the number of leaves, branches and stem diameter was decreased but the number of withering leaves increased. Increasing plant density from fresh forage yield, dry matter (DM) yield, crude protein (CP) yield and total digestible nutrients (TDN) increased from 75.8MT/ha to 95.5MT/ha, from 14.9MT/ha to 18.3MT/ha, from 1.9MT/ha to 3.0MT/ha and from 7.6MT/ha to 11.1MT/ha, respectively. However, no significant differences in these yields were found between 50 x 17 and 50 x 15㎝. Increasing plant density from 50 x 40 to 50 x 15㎝, leaf out of CP, crude fat (CF), nitrogen free extract (NFE) contents increased from 19.3% to 23.5%, from 4.7% to 6.2%, from 37.0% to 42.1 %, respectively. However, increasing plant density from 50 x 40 to 50 x 15㎝, crude fiber and crude ash contents decreased from 20.8% to 17.6%, from 9.0% to 8.2%.

제주도에서 차풀의 파종기 이동에 따른 생육반응 수량 및 사료가치 변화

조남기,조영일,송창길,오은경,고지병 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.5

This study was conducted to determine the influence of seeding date on growth, characteristic yield and chemical composition of Cassia mimosoides var. nomame from March 11, 1998 to December 1998 in Cheju Province. Days to flowering were lessened as seeding date was delayed. The plant height of Cassia mimosoides var. nomame was the longest when seeded on 31 March(99㎝) than at the other seeding date. When seeded before 31 March, stem diameter, number of leaves increased as seeding date was late, while number of branches remained constant. And numbers of withering leaves were increased as seeding date was earlier. Fresh forage yield per ha, for Cassia mimosoides var. nomame was the greatest (46.60MT) at 31 March seeding, the second was 43.97 MT at 10 April seeding and the reduced the 34.73MT at 11 March seeding. Also dry matter yield, crude protein yield and total digestible nutrient(TDN) yield per ha was nearly the same tendency. Crude protein, crude fat percent were the greatest at 31 March seeding and than decreased with further increased at seeding date. Crude ash and crude fiber percent tended to decrease as seeding date was delayed. Nitrogen free extract (NFE) and TDN percent tended to increase as seeding date was delayed.