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강달순(Dal-Soon Kang),김대호(Dae-Ho Kim),신현열(Hyun-Yul Shin),손길만(Gil-Man Son),노치웅(Chi-Woong Rho),김정곤(Jung-Gon Kim) 한국초지조사료학회 2009 한국초지조사료학회지 Vol.29 No.2
주년 조사료 생산을 위한 작부체계에서 하계작물에서는 수수 × 수단그라스 교잡종이 청예수량이 가장 많았고, 다음이 옥수수이었으며, 건물수량은 옥수수 > 수수 × 수단그라스 교잡종 > 수수 >> 귀리의 순이었다. 작부체계에서 동계작물의 종류가 하계작물의 청예 및 건물생산에 미치는 영향을 검토한 결과 통계적 유의성을 볼 수 있었다. 동계작물들의 청예 및 건물 생산량은 5월 중순 예취시 귀리가 가장 많았으며, 트리티케일 > 이탈리안 라이그라스 > 호밀 > 청보리의 순이었다. 앞작물로 재배된 하계작물의 종류가 동계작물의 청예 및 건물수량에 미치는 영향은 적은 것으로 보였다. 하계작물의 사료가치는 귀리가 조단백질 함량이 가장 높았으며, ADF는 수수, 그리고 NDF는 수수×수단 그라스 교잡종이 다소 높았다. 또한 옥수수가 RFV와 TDN이 가장 많았다. 동계작물의 사료가치는 조단백질 함량은 귀리가 가장 높았으나, ADF와 NDF 등의 섬유소 함량은 작물간 큰 차이를 보이지 않았다. RFV는 호밀과 트리티케일에서 높았으며, 귀리가 다소 낮은 경향을 보였다. 한편 TDN 함량은 트리티케일에서 가장 높게 나타났다. 주년 조사료 생산을 위한 작부조합별 건물 생산량은 옥수수와 호밀, 옥수수와 트리티케일에서 가장 높아 유망한 작부 체계로 보였다. 한편 옥수수와 트리티케일, 옥수수와 호밀, 그리고 수수 × 수단그라스 교잡종과 트리티케일/호밀의 작부체계가 TDN 생산량을 고려할 때 유망한 작부조합으로 나타났다. 토양 pH, EC 및 유기물 함량은 시험전에 비해 시험후에 높아지는 경향이었다. 예취시기별 동계작물의 사료가치를 검토한 결과 조단백질 함량은 4월 중순보다 5월 중순 예취시 많았으며, ADF와 NDF 함량은 수확시기가 늦어질수록 증가 하였다. 또한 RFV와 TDN 함량은 생육후기로 갈수록 낮아졌다. Present experiment was conducted at the field of Gyeongnam Agricultural Research and Extension Services in Jinju city for two continuous cropping seasons to develop several adaptable and valuable year-round forage-producing system for elevating self-sufficiency and dollar-saving by reduced importing of crude forage. Twenty cropping systems were tested in experiment using whole crop barley (WCB), oat, rye, Italian ryegrass (IRG), and triticale in winter season and corn, sorghum, sorghum × sudangrass hybrid, and oat in summer time. Sorghum × sudangrass hybrid showed highest fresh forage yield among experimented summer season crops, and followed corn. Corn produced the most dry matter yield, and followed sorghum×sudangrass hybrid, sorghum and oat in order. There was no significant effect of former winter crops on fresh and dry matter production succeeding summer time crops. Among winter season forage crops tested, oat showed the highest fresh and dry matter when clipped on mid-May, and followed triticale, IRG, rye and WCB. Winter-time cultivated crops showed no clear effect on the growth and forage (fresh and dry matter) producing ability of following summer crops. There was the most protein content in oat plant among summer season planted crops, and in sorghum for acid detergent fiber (ADF) and in sorghum × sudangrass hybrid for neutral detergent fiber (NDF), respectively. While, corn showed highest value of relative feed value (RFV) and total digestive nutrients (TDN) among those crops. Among winter crops, the highest crude protein was in oat plant showing no significant differences of ADF and NDF, while, relatively higher value of RFV was recognized with rye and triticale. Also, triticale contained more TDN as compare to other forage crops. The cropping combinations such as corn followed by (fb) rye and maize fb triticale were regarded as promising systems having higher dry matter producing ability among tested combinations. Considering TDN producing potential, the combinations with sorghum × sudangrass hybrid fb triticale and/or rye were would be suitable ones, coincidently. There was a tendency which elevating pH, electric conductivity (EC) and organic matter (OM) contents in soil after experiment comparing to before planting. More crude protein content in plant was shown at mid-May clipping as compared to the forage at April cut in all winter season grown crops. ADF and NDF contents were increased by delayed clipping showing decreased tendency of RFV and TDN in plant. In conclusion, many cropping systems would be available using above mentioned forage crops according to farmer’s conditions and scale, etc.
양질 조사료 생산을 위한 청보리와 콩과 작물의 작부체계 및 질소 시비량에 관한 연구
김대호(Dae-Ho Kim),강달순(Dal-Soon Kang),문진영(Jin-Young Moon),신현열(Hyun-Yul Shin),손길만(Gil-Man Shon),노치웅(Chi-Woong Rho),김정곤(Jung-Gon Kim) 韓國草地學會 2009 한국초지조사료학회지 Vol.29 No.3
To improve the forage quality and reduce nitrogen input, trial was conducted on the effect of seeding method, combination, and nitrogen fertilizer with WCB (whole crop barley) and leguminous plant. Present experiment was carried out by split-split design having seeding methods for main plot, combinations for sub-plot, and nitrogen fertilizers for sub-sub plot with three replications. When WCB and leguminous plant were mixed-sown, WCB showed earlier heading and maturing than those of inter-sown, and the more nitrogen delayed growth stage a little. Occurrence of BaYMV (Barley Yellow Mosaic Virus), a serious disease caused by soil fungi and decrease barley yield, was deterred by mixed-seeding as compared to inter-sown barley a little. Inter-sown WCB increased the number of spike per ㎡ as compared to mixed-seeding showing more spikes with nitrogen increase. WCB produced much fresh and dry matter yield at mixed-seeding than inter-seeding, and had advantage with hairy vetch (HV). Increased nitrogen showed much forage yield, however, half application of it is considerable for environmental-friendly farming. Electric conductivity (EC) decreased in inter-cropping or mixed-sowing soil with WCB and leguminous crop after harvest. But, organic matter (OM) content of soil after harvesting was vice versa. Acid detergent fiber (ADF) and Neutral detergent fiber (NDF) of WCB plant were higher at mixed-seeding than those of inter-sown ones. It showed increased tendency with time progress. 친환경적인 조사료 생산과 사료가치 향상을 위해 콩과 작물과 청보리 혼파에 관한 시험을 수행하였다. 최근 보리 재배시 심하게 발생하여 감수를 초래하는 토양 전염성 병인 호위축 바이러스 (BaYMV) 발생은 간작에서 3정도 발생하였으나, 혼파했을때는 발생이 1 정도로 경감되었다. 청보리와 헤어리베치 또는 자운영을 혼파했을 때, 혼파에서 출수 및 성숙기가 간작보다 다소 빨랐으며, 질소 시비량이 늘어날수록 생육이 지연되었다. 청보리의 단위면적당 수수는 간작에서 혼파보다 많았으며, 질소 시비량이 많을 수록 증가하였고 간장도 비슷한 경향이었다. 예취시기별 청예수량은 혼파에서 다소 많았는데, 헤어리베치와 혼파하였을 때가 자운영과 혼파하였을 경우보다 많아 혼파시 유리할 것으로 생각되었다. 또한, 질소 시용량이 많아질수록 청예 및 건물수량이 증가했으나 경제성 및 친환경 농업을 위한 견지에서 질소를 표준시비량의 1/2 정도로 줄여도 가능할 것으로 보였다. 청보리와 콩과 목초를 혼파 또는 간작했을 때, 토양 EC가 수확 후 다소 낮아졌으며, 유기물 함량은 증가하는 결과를 나타내었다. ADF (acid detergent fiber)와 NDF (neutral detergent fiber) 함량은 파종방법 및 작부조합 간에는 뚜렷한 경향을 볼 수 없었으나, TDN(total digestible nutrients) 함량은 질소 시비량이 증가할수록 높아지는 경향을 보였다. 또한, 청보리 단작에 비해서는 청보리와 콩과작물과의 혼파 및 간작이 대체적으로 사료가치가 높은 경향을 볼 수 있었다. 청보리와 두과 작물과의 혼파는 사료가치의 향상효과 및 지력유지, 화학비료 절감 등 친환경 지속적농업을 위한 유망한 재배기술이라고 판단되었다.
이용호(Yong-Ho Lee),강달순(Dal-Soon Kang),최재혁(Jae-Hyeok Choi),김희연(Yeon-Hee Kim),김성만(Sung-Man Kim) 한국차학회 2010 한국차학회지 Vol.16 No.1
The aim of this study was to investigate the quality and quantity of three varieties of green tea leaf, Gyeongnam 1, 2, and 3. The results are summarized as follows. Bud length of the tested varieties were longer than Charmrock [Yabukita > Gyeongnam 2 (GN 2) > Gyeongnam 1, 3 (GN 1. 3) > Charmrock]. Leaf width, leaf length, and leaf area of GN 2 were similar to Charmrock and Yabukita. Ratio of bud emergence for GN 2 was higher compared to Charmrock and Yabukita. The moisture level of GN 2 was less than Charmrock and Yabukita, but the amount of crude protein was higher. For mineral elements, the amount of Na, Fe, and Mn in GN 1, 2, and 3 was significantly higher than in Charmrock and Yabukita. The levels of tannin and polyphenols in GN 1, 2,3 were lower compared to Yabukita and Charmrock, but the amount of GABA was higher.
남부 산간지역에서 수집한 차나무 삽수의 특성 및 삽목 후 활착율 : 지리산을 중심으로
이용호(Yong-Ho Lee),강달순(Dal-Soon Kang),오주성(Ju-Sung Oh),제순자(Soon-Ja Je),김성만(Sung-Man Kim) 한국차학회 2011 한국차학회지 Vol.17 No.2
The conclusion of hierarchical characteristics and multiplication for cutting grafting with tea having dominant trait among wild teas (Camellia sinensis L.) collected from southern mountainous region is as below. Although tea leaves collected from Jigoksa area in Sancheong and Dosimdawon area in Hadong are narrow in leaf width and distinct in vein and serrate, tea leaves collected from Chabatgol area in Gimhae and Dasolsa area in Sacheon are generally large in leaf size and indented in vein and serrate. In addition, the leaves from Chabatgol and Dasolsa area as secondly mentioned above have high performance in rooting rate (97.0-100%) and are high worth their keep as a model of crossbreeding for the future because their genetic trait that has the highest correlation with leaf area representing qualitative character is the leaf width (0.882**).