• 현장농수산연구지
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• 제25권2호
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• pp.12-19
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• 2023

한국농수산대학교 공정육묘실에서 인삼을 종자 파종하여 생장한 인삼 1년근을 각 실험구(공정육묘실, 관행 노지)에 이식 전 1차 생장 조사를 하고, 3개월 생육 후 2차 생장 비교조사를 하였다. 1차 생장 조사 결과, 이식 전 뿌리의 무게는 평균 0.95g에서 이식 후 관행 노지는 0.21g, 공정육묘실은 0.29g으로 증가하였다. 뿌리의 길이는 평균 13.85cm에서 이식 후 관행 노지는 2.03cm, 공정육묘실은 2.66cm로 증가하였다. 뿌리의 지름은 평균 5.58mm에서 이식 후 관행 노지는 1.04mm, 공정육묘실은 1.26mm로 증가하였다. 공정육묘실에서 생육한 인삼이 관행 노지재배보다 더 많은 생장이 확인되었다. 공정육묘실에서 생육한 인삼과 진안 농가 관행 노지재배 인삼의 진세노사이드 성분함량 비교를 위해 각 1년근, 2년근의 진세노사이드 11종(Rg1, Re, Rf, Rh1(S)+Rg2(S), Rb1, Rc, Ra1, Rb2, Rb3, Rd, Rg3)의 함량 비교한 결과, 진세노사이드 1종 전체 함량이 공정육묘실 재배 인삼 1년근에서는 17.32mg/g, 공정육묘실 재배 인삼 2년근에서는 16.43mg/g, 관행 노지재배 1년근에서는 5.84mg/g, 관행 노지재배 2년근에서는 6.17mg/g으로 확인되었다. 관행 노지재배 인삼 1년근, 2년근보다 공정육묘실 1년근, 2년근이 2배 이상으로 더 많은 진세노사이드 함량이 HPLC 분석 결괏값으로 확인되었다. 결론적으로 관행 노지재배 묘삼은 자연환경 아래에서 재배환경의 다양한 요인에 의한 생장이 작용하는 반면 공정육묘는 생장이 우수한 인공토 비율과, 식물 영양액 농도 EC1.0ms/cm로 수분을 공급하여 안정된 생장을 할 수 있고, 식물 생장에 필요한 온도, 광, 수분의 환경제어가 가능한 상태에서 생장하므로 묘삼의 생장 안정성을 확보할 수 있어 향후 이에 관한 지속적인 연구가 필요하다.

• 한국유기농업학회지
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• 제22권1호
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• pp.97-113
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• 2014

1. 토양조건은 배수가 양호한 양토인 안룡통 보통답으로 칼륨을 제외하고는 우리나라 논토양의 평균 함량보다 낮은 토양이었다. 유기질비료로 처리구는 질소 표준시비량인 9kg/10a과 비슷한 N-P-K=8.45-4.89-9.24kg/10a를 시용한 반면 관행구는 표준시비량보다 많은 N-P-K=14.5-6.3-10.8kg/10a를 시용하였다. 2. 벼 수확 후 시험구 토양내 미생물상 분포를 조사한 결과 박테리아와 방선균의 수는 처리구에서 약간 높게 나타났고, 곰팡이의 수는 관행구에서 약간 높게 나타났다. 토양내 가수분해효소 생성미생물을 조사한 결과 호평벼 처리구에서 키틴분해미생물과 인산분해 미생물 분포가 다소 높게 나타났다. 3. 병해충 발생정도는 전체적으로 처리구에서는 미미하게 발생하였다. 그러나 관행구에서 특히 호평벼에서 도복과 이삭도열병이, 잎집무늬마름병은 두 품종 공히 심하게 발생하였다. 혹명나방은 온누리에서 발생율이 높았는데 이는 질소 과다 시용으로 판단되었다. 4. 호평벼와 온누리 공히 관행구가 처리구에 비해 간장과 수장은 약간 길고, 주당수수는 많았다. 그러나 잎집무늬마름병 및 이삭도열병, 혹명나방 도복 등으로 등숙비율이 현저히 떨어졌다. 관행구는 천립중이 낮았으며 수량이 호평벼는 38%, 온누리는 13% 떨어졌다. 5. 병해충인 이삭도열병, 잎집무늬마름병, 혹명나방과 수량과의 관계에서 유의성이 높은 부의 상관관계가 나타났다. 6. 백미의 품질도 관행구에서 쇄립율의 증가로 완전미 비율은 낮고, 단백질함량이 높아 전반적인 품질 및 윤기치가 낮아졌다.

• Journal of Biosystems Engineering
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• 제3권2호
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• pp.22-33
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• 1978

To maintain the self-sufficiency of food production , it is required to improved the productivity and increase the effective utilization of land in the double cropping areas using improved cultivation technology. The following reasons encourage this cours of action because the overlapping rice harvest and barely seeding seasons complete for labour, the lower price of barley makes it financially less attractive to grow and these two facts together are responsible for a decrease in barley being planted in certain more seasonably marginal double cropping areas. Fro these reasons, it is desirable to carry out tests to improve the current cultivation techniques . In this interest , the following studies were carried out in the experimental field located at Banweol-myeon, Whasung-jkun, Gyeonggi-do from October 1977 to July 1978 in order to establish the mechanical method of barley cultivation using the power tiller. The summarized results are as follows. 1. The work performance in the seeding operation using the rotary barley seeder was 68 minutes per 10 ares which compares favourably with 408 min/10a using the conventional method. This is only one sixth of the time required by th conventional method. The operating costs using the rotary barley seeder was 1, 463 won per 10 areas as against 3, 486 Won per 10 ares for the conventional method, showing a saving of about 50% in comparison with the conventional method. 2. In the manure spreading operation, the work performance was 25 min/10a for the manure spreading machine , compared to 1089 min/10a for the manual operations. This is about one fourth of the time required by the conventional method, The operating costs were 810 Won/10a for the machine and 857 Won/10a for the manual labour. This cost shows little advantage by the machine over the manual labor costs. The conventional method of manure spreading will continue pending decision which will develope and improve the machine.3. Work performance in the rolling operation using the barley rolIer was 30 min/lOa which compares favourably with 135 min/10a using conventional method. This was one fourth of the time required by the conventional method. The operating costs were 514 Won/103. for the machine and 1, 003 Won/lOa for manual labour. In the weed control operation, the work performance and operating costs were 45min/lOa, 1, 399won/10a for the herbcide application using the power sprayer, 1, 149min/10a 8, 541won/lOa for the conventional method respectively. This is 26 times higher efficiency in comparison to the conventional method. 4. In the harvesting operation using the reaper binder and tiller attachment, the work performance was 60min/lOa and represents a cost of 2, 039won/10a. The con\ulcornerventional method took 640min/10a at a cost of 4, 757won/lOa. The reaper binder showns a saving of one tenth over the conventional method. The automatic thresher is already recommended for the current situations, and is now being used. 5. From a comparison of the results of the above trials, the serial cultivation system using the attachment for the power tiller such as the rotary barley seeder is now to be recommended for the current barley cultivation system. It is also recommend from these results that the mechanized technology now available must be used to improve and maintain the increase in barley production. It is seen th1t this is the only course now avaihble to solve the peak seasonal requirements of labour needed for l11rvesting and seeding between rice and barley cultivation.

• 한국생물환경조절학회:학술대회논문집
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• 한국생물환경조절학회 2004년도 추계학술대회 논문집
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• pp.5-9
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• 2004

Garlic industries in Korea faced with a increasing difficulty because of the pressure of garlic importation from China is ever increasing than before. Therefore this study was conducted to produce low-cost garlics by mechanized cultivation and the results are as follows. A. By applying machinery(stem cutter and size separator, seeder, harvester) the labor was saved over 70% compare with the conventional cultivation B. Growth characteristics and yield showed no difference in mechanized and conventional cultivation of northern-type garlic. C. When scales were sown by seeder, the sowing-depth varied between 3 to 6cm and the rate of 2-plants emergence in one hole was 14.5%.

• 한국유기농업학회지
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• 제19권spc호
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• pp.263-266
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• 2011

Crop protection strategies in organic horticulture aim to prevent insect pest and plant disease problems through utilization of non-chemical based control means. In order to develop a model for management of plant diseases and insects in organic cucumber cultivation, we compared efficacies between chemical pesticide spraying system and biological control means in semi-forcing and retarding cucumber cultivation during 2005 and 2006. Conventional chemical spray program using various chemical pesticides was applied 5 - 10 days intervals, while two different non-chemical pesticide application programs using two formulated biopesticides Topseed$^{TM}$ and Q-fect$^{TM}$, Suncho$^{TM}$, and Sangsungje$^{TM}$ (biocontrol agents 1) and using egg-yolk and cooking oil(EYCO), Bordeaux mixture, Suncho$^{TM}$, and Sangsungje$^{TM}$ (biocontrol agents 2) were applied 5 - 7 days intervals during entire cucumber cultivation period. Efficacy of both biocontrol agents programs was effective to comparable to conventional chemical pesitice spray program to control plant diseases such as powdery mildew and downy mildew as well as insect pests such as aphids and thrips which are known as major threats in cucumber organic cultivation. In this study, we established and evaluated an effective and economic crop protection strategy using various biological resources can be used to control plant diseases and pests simultaneously in organic cucumber cultivation field.

• 한국유기농업학회지
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• 제28권4호
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• pp.579-589
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• 2020

고추역병 다발생 포장에서 녹비작물인 호밀재배에 따른 토양환경 변화와 고추역병 경감 효과를 조사하였다. 토양 물리성을 분석한 결과에서는 호밀재배에서 용적밀도와 공극률이 증가하였다. 또한, 토양 삼상의 분포는 고상에서는 관행재배와 차이가 없었으나, 기상은 관행재배 보다 증가하고 액상은 감소하였다. 토양 내 인지질 지방산을 추출하여 지표 지방산으로 분석한 미생물 군락의 상대밀도는 호밀재배에서 유의성 있게 증가하였으며, 호기성균/혐기성균의 비율의 비율도 호밀재배에서 높게 나타났다. 환경스트레스 지표인 포화지방산/불포화지방산 비율과 cyclo-지방산/전구체 비율은 호밀재배가 관행재배 보다 낮아 토양환경이 개선 된 것으로 나타났다. 호밀재배에 따른 고추역병의 경감효과를 조사한 결과 호밀재배가 관행재배 보다 30.7% 낮은 발병률을 나타냈다. 이상의 결과를 요약해볼 때, 고추역병 다발생 포장에서 녹비작물인 호밀재배는 토양환경을 개선하고 고추역병 발병을 감소시킬 것으로 사료된다.

• 한국유기농업학회지
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• 제5권1호
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• pp.149-165
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• 1996

In order to get some basic datas on environmental friendly funtion against soil and water pollution and safe vegetable production by organic farming, chemical characteristics of soils cultivated by the conventional farming, greengouse cultivation and organic farming and acumulation of NO3--N in chinese cabbage and lettuce were analysed. The highest value of NO3--N in 0-30cm subsoil of organic farming was found among the 3 different farming systems, and it was 3.6 and 6.6 times higher than those of conventional farming in chinese cabbage and lettuce respectively. P2O5 also show high accumulation in the rhizosphere of organic farming compared to convnetional farming. The accumulation of NO3--N and P2O5 in the rhizosphere of organic farming were simial to those of greenhouse cultivation. The NO3- accumulation in chinese cabbage and lettuce by organic farming reach 3224ppm in chinese cabbage and 2543ppm in lettuce and it were 4.7 and 6.4 times higher than those of convnetional farming. It is urgently necessary to introduce the basic standard of IFOAM, EU and FAO/WHO Codex on organic agriculture into korean organic agriculture for operation of environmental friendly system and production of safe vegetable in terms of NO3-.

• 생명과학회지
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• 제27권10호
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• pp.1176-1184
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• 2017

소비자 구매 단계의 유기재배 청양고추, 토마토, 딸기의 기능성 성분과 무기 성분을 관행재배 농산물과 비교하였다. Total phenol 함량은 유기재배 청양고추와 토마토가 관행재배 보다 각각 14%, 30% 높은 함량을 나타냈고, 딸기는 관행재배에서 13% 높게 나타났다. Total flavonoid 함량 또한 청양고추와 토마토가 관행재배보다 각각 11%와 29% 높게 나타났고, 딸기는 관행재배에서 2배 높게 나타났다. Vitamin C는 유기재배에서 높게 나타났으나 유의적이지는 않았다. ${\beta}-carotene$은 유기재배 토마토가 22% 높은 함량을 나타냈고, 고추와 딸기는 관행에서 각각 15%와 29% 높게 나타났다. 청양고추의 capsaicin과 토마토의 lycopene 함량은 재배환경에 따른 차이가 나지 않았으며, 딸기의 anthocyanin은 관행재배에서 높게 나타났다. 무기성분 분석결과 청양고추의 Total N, P, K는 재배환경에 큰 차이가 나타나지 않았고, 토마토는 관행재배에서 22~28% 높게 나타났다. 딸기의 K, Ca, Mg, P 함량은 관행재배에서 16~29% 높게 나타났다. 소비자 구매 단계의 유기재배 과채류와 관행재배 과채류의 일반성분과 무기성분 및 기능성성분 함량을 비교 분석한 결과, 성분에 따라서는 함량이 높게 나타났으나 개체간 변화가 크게 나타났다. 재배법에 따른 기능성 성분 등의 함량 비교는 생산지와 품종을 나누어 수년간 조사하여 빅데이터를 구축할 필요가 있을 것이다.

• 한국유기농업학회지
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• 제20권4호
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• pp.519-533
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• 2012

In this study, of currently being implemented organic cultivation in rice, the economic effects of snail agriculture, natural circulation agriculture, stevia agriculture and art nature agriculture were compared and analyzed. Analysis results showed that the economic effects of selling price per 10a, gross margin and agricultural income were increased, compared to those of previous agricultural techniques. In addition, the comparison results of economic effects by agricultural techniques showed that the agricultural income per 10a of organic cultivation were increased from the national average, compared to that of conventional cultivation. These economic effects analysis by agricultural techniques can help in the decisionmaking of farmers for the adoption of agricultural techniques in the future.

• 농촌계획
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• 제27권3호
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• pp.21-33
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• 2021

Rice straw management and winter crop cultivation are crucial components for the accurate estimation of paddy methane emissions. Field-based extensive investigation of paddy organic matter management requires enormous efforts however it becomes more feasible as drone technology advances. The objectives of this study were to identify paddy fields of straw application and winter crop cultivation using drone images and to apply for the estimation of yearly methane emission. Total 35 sites of over 150ha in area were selected nationwide as the study areas. Drone images of the study sites were taken twice during summer and winter in 2018 through 2019: Summer images were used to identify paddy cultivation areas, while winter images for straw and winter crop practices. Drone-image-based identification results were used to estimate paddy methane emission and compared with conventional method. As the result, mean areas for paddy, straw application and winter crop cultivation were 118.9ha, 12.0ha, and 11.3ha, respectively. Overall rice straw application rate were greater in Gyeonggi-do(20%) and Chungcheongnam-do(12%), while winter crop cultivation was greatest in Gyeongsangnam-do(30%) and Jeolla-do(27%). Yearly mean methane emission was estimated to be 226.2kg CH₄/ha/yr in this study and about 32% less when compared to 331.8kg CH₄/ha/yr estimated with the conventional method. This was primarily because of the lower rice straw application rate observed in this study, which was less than quarter the rate of 55.62% used for the conventional method. This indicates the necessity to use more accurate statistics of rice straw application as well as winter crop practices into paddy methane emission estimation. Thus it is recommended to further study to link drone technology with satellite image analysis in order to identify organic management practices at a paddy field level over extensive agricultural area.