이앙시기에 따른 벼 품종별 줄무늬잎마름병 발생 및 수량 비교

차광홍,오환중,박흥규,정우진,Cha, Kwang-Hong,Oh, Hwan-Jung,Park, Heung-Gyu,Jung, Woo-Jin 한국유기농업학회 2010 韓國有機農業學會誌 Vol.18 No.1

The purpose of this study is to investigate an occurrence rate of rice stripe virus disease under different rice transplanting time and different rice cultivars. After final harvest, the yield of rice infected by rice stripe virus was obtained on Wangchal cultivar compared to uninfected rice. The results obtained as following: 1) Yield of rice infected by rice stripe virus was decreased by 64% with reduction of culm length, pancile length, number of spike, number of spikelet, and grain filling compared to uninfected rice, 2) An occurrence rate of rice stripe virus disease under different rice planting season was high as order of May 30 > June 15 > July 1. In additional, to reduce a rice stripe virus disease on higher disease occurrence region and susceptible cultivars, rice planting season will be accepted on and after June 15, and 3) Eighteen cultivars were resistance cultivars such as Hwayeongbyeo, Onnuri, Ilmibyeo, Nampyongbyeo, Dongjin2ho, Hopumbyeo, Hwangkeumnuri, Malgeumi, Saenuri, Pungmi1ho, Haechanmulgyeo, Hwangkeumnodeul, Chilbobyeo, Dongjinbyeo, Younganbyeo, Junambyeo, Samkwangbyeo, and Nakdongbyeo. Twenty-one cultivars were susceptible cultivars such as Odaebyeo, Unkwangbyeo, Shinungbong1ho, Manabyeo, Hopyongbyeo, Borami, Damibyeo, Hwangchalbyeo, Sulgengbyeo, Nongrim6ho, Sasanishigi, Yunishigari, Chungmubyeo, Dongjin1ho, Huknambyeo, Guromy, Shanghehanghulna, Heukchalbyeo, Heukhwangbyeo, and Aranghwangchalbyeo. 벼 이앙시기별 및 벼 품종별 줄무늬 잎마름병 발생 및 벼 수량에 대한 시험결과를 요약하면 다음과 같다. 1. 벼 줄무늬 잎마름병 발생이 심한 경우 간장, 수장, 이삭수, 수당입수, 등숙율 등이 매우 낮아서 정상주에 비교하여 64%의 감수를 보였다. 2. 벼 이앙시기별 발병률은 5월 30일 > 6월 15일 > 7월 1일 순으로 나타났고, 발병률이 높은 상습 발병지나 감수성 품종의 경우는 이앙시기를 6월 15일 이후로 정하는 것이 줄무늬 잎마름병에 대한 병 발생률을 줄이는 방법으로 나타났다. 3. 벼 줄무늬 잎마름병 저항성 품종으로는 화영벼, 온누리, 일미벼, 남평벼, 동진2호, 호품벼, 황금누리, 말그미, 새누리, 풍미1호, 해찬물결, 황금노들, 칠보벼, 동진벼, 영안벼, 주남벼, 삼광벼, 낙동벼 등 총 18개 품종이었으며, 감수성 품종으로는 오대벼, 운광벼, 신운봉1호, 만나벼, 호평벼, 보라미, 다미벼, 왕찰벼, 설갱벼, 백진주벼, 농림6호, 사사니시끼, 유니시까리, 청무벼, 동진1호, 흑남벼, 구로마이, 상해항혈나, 흑찰벼, 흑향벼, 아랑향찰벼 등 총 21개 품종으로 조사되었다.

유기재배매뉴얼을 활용한 유기쌀 생산

차광홍,오환중,서동준,송용수,안준섭,안규남,정우진,Cha, Kwang-Hong,Oh, Hwan-Jung,Seo, Dong-Jun,Song, Yong-Su,Ahn, Joon-Seob,An, Kyu-Nam,Jung, Woo-Jin 한국유기농업학회 2014 韓國有機農業學會誌 Vol.22 No.1

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. An actual proof experiment was carried out to establish the production of high quality organic rice at farm household in Gwangjin, Junnam, Korea 2011. Experimental plot was designed with conventional organic cultivation and manual organic cultivation in both Hopeongbyeo and Onnuri varities. Experimental field was consisted with suitable drainage loam soil, anryong series, and normal paddy field. Chemical characteristics of the soil were investigated from initial soil and soil after harvest in experimental sites. Seed disinfection was treated with hot water dipping method at $60^{\circ}C$ for 10 min. Rice transplanting was carried out at 17 June with 25 days seedling using machine transplanting. Golden apple snail was used to prevent weed growth as middle size (1.5~1.7 kg/10a) at one week after rice transplanting. Amount of applied fertilizer in experimental plot was supplied with organic fertilizer for the shortage after harvest of hairy vetch (1,100 kg/10a). Bordeaux mixture was used to control of sheath blight and neck blast disease in all experimental plot at 19 Aug. Application of chitin culture solution was treated in manual organic cultivation at 2 and 15 Aug. At late growth stage, incidence rate of neck blast was the highest level at Hopyeongbyeo in conventional organic cultivation. Incidence rate of sheath blight in both Hopyeongbyeo and Onnuri was higher in conventional organic cultivation than in manual organic cultivation. Incidence of rice leaf folder was the highest level at Onnuri in conventional organic cultivation. Yield index in manual organic cultivation was increased by 13% and 38% at Onnuri and Hopyeongbyeo, respectively, compared with conventional organic cultivation. Head rice percentage in both Hopyeongbyeo and Onnuri was slightly increased in manual organic cultivation. These results indicate that high quality production of rice organic cultivation could be depending on management of safe fertilization with nutrient content in soil.

벼 유기재배 시 녹비작물 처리에 의한 작물의 생육, 수량 및 품질 비교

차광홍,오환중,박흥규,안규남,박노동,정우진,Cha, Kwang-Hong,Oh, Hwan-Jung,Park, Heung-Gyu,An, Kyu-Nam,Park, Ro-Dong,Jung, Woo-Jin 한국유기농업학회 2011 韓國有機農業學會誌 Vol.19 No.1

벼 재배포장에서 녹비작물의 이용성을 조사하고자 보리와 헤어리베치를 적용하여 시험구를 배치하였다. 무농약 4년차 벼 재배포장에서 벼 수확 후 재배한 보리를 녹비작물로 이용한 처리구(보리녹비구), 보리와 헤어리베치를 혼파한 다음 녹비작물로 이용한 처리구(보리+헤어리베치 녹비구), 벼 수확 후 녹비작물을 재배하지 않은 방임구(나지방임구)와 보리를 재배한 후 수확한 처리구(관행구)에서 호품벼를 2009년 6월 15일 평당 60주를 기준으로 기계 이앙하여 얻어진 시험결과를 요약하면 다음과 같다. 1. 간장과 수장은 관행구가 조금 길었으며, 처리간에는 차이가 없었다. 백미 수량은 관행구를 100%로 볼 때 보리녹비구가 90.3%, 보리+헤어리베치 녹비구가 95.9%로 나타났다. 2. 벼 품질 평가에서 보리녹비구와 보리+헤어리베치 녹비구의 단백질 함량은 관행구 6.6%에 비해 5.7%로 낮았다. 아밀로스함량은 모든 처리구에서 18.8~19.1% 범위로 유사한 경향을 보였다. 백도는 관행구 37.7에 비해 보리녹비구 38.9와 보리+헤어리베치 녹비구 39.1로 약간 높게 나타났다. 3. 취반미 윤기치는 관행구 77.6에 비해 보리수확구가 82.0, 나지방임구가 83.8로 양호하게 나타났다. 4. 완전립율이 나지방임구는 95.5%인 반면에 관행구, 보리녹비구, 보리+헤어리베치 녹비구에서 93.8~94.2% 범위로 약간 낮게 나타났다. 쇄립율도 유사한 경향이었으며 분상질립율은 관행구가 1.7%로 가장 높았다. 5. 본 시험에서 발생된 병해는 잎도열병, 이삭도열병, 잎집무늬마름병이었다. 해충으로는 굴파리류, 혹명나방, 줄점팔랑나방, 끝동매미충이었다. 기상환경이 병해충발생에 불리한 조건으로 경과되어 병해충 발생이 전반적으로 적었으며 처리간에도 유의적인 차이를 나타내지 않았다. To investigate a comparison of rice yield and quality by a utilization of green crops using barley and hairyvetch, this study was carried out in rice (Oryza sativa L.) organic cultivation field. Convention barley harvest (CBH), Green barley crop (GBC), Green barley+Green Hairyvetch crop (GB+HVC), and Non-Green crop (NGC) were treated in rice cultivation field. The results obtained as following: 1) Culm length and pancile length in Convention barley harvest (CBH) cultivation were longer than organic cultivation but were not significant difference in all treatments. Yields of milled rice in Green barley crop (GBC) and Green barley+Green Hairyvetch crop (GB+HVC) were by 90.3% and 95.9%, respectively. 2) Protein contents in Green barley crop (GBC) and Green barley+Green Hairyvetch crop (GB+HVC) were by 5.7% lower than 6.6% in Convention barley harvest (CBH) cultivation. Amylose contents in all treatment were similar as range 18.8% to 19.1%. Whiteness contents in Green barley crop (GBC) and Green barley+Green Hairyvetch crop (GB+HVC) were slightly higher by 38.9% and 39.1%, respectively, than 37.7% in Convention barley harvest (CBH) cultivation. 3) Palatability values in Barley harvest (BH) and Non-Green crop (NGC) were slightly higher by 82.0 and 83.8, respectively, than 77.6 in Convention barley harvest (CBH) cultivation. 4) Head rice in Non-Green crop (NGC) was 95.5%, while that of Convention barley harvest (CBH), Green barley crop (GBC), and Green barley+Green Hairy-vetch crop (GB+HVC) were slightly low as range 93.8% to 94.2%. White core and belly rice in Convention barley harvest (CBH) cultivation was the highest level by 1.7%. 5) Leaf blast, neck blast, sheath blight, rice stem maggot, rice leaf roller, rice leaf-tier, and green rice leafhopper were occurred lightly in rice field.

친환경 광역단지 내 젤라틴·키틴분해미생물을 이용한 유기 벼 생산

최승희,차광홍,서동준,박흥규,권오도,안규남,이재학,김길용,정우진,Choi, Seung-Hee,Cha, Kwang-Hong,Seo, Dong-Jun,Park, Hung-Gyu,Kwon, Oh-Do,An, Kyu-Nam,Lee, Jai-Hak,Kim, Kil-Yong,Jung, Woo-Jin 한국유기농업학회 2018 韓國有機農業學會誌 Vol.26 No.4

1. 유기재배구의 토양조건은 배수가 약간 불량한 미사질 양토인 전북통 보통답으로 유효규산이 높은 것을 제외하고는 우리나라 논토양의 화학적 성분과 평균 함량이 유사하였다. 2. 관행재배구와 유기재배구 간에 생육은 초장, 분얼수, 이삭수, 이삭길이 모두 관행재배구에서 높은 것을 확인하였으며 이삭당 입수와 등숙율은 유기재배구에서 다소 높게 나타났다. 3. 병해충 발생정도는 물바구미, 잎집무늬마름병, 혹명나방, 도열병이 유기재배구에서 많이 발생하였고, 이삭누룩병은 관행재배구에서 조금 더 많이 발생하였다. 4. 주요 관리대상 병해충인 잎집무늬마름병(y=-0.2848x+199.57, $R^2=0.704^*$), 혹명나방 발생(y=-0.1361x+92.535, $R^2=0.8049^*$)과 쌀 수량과의 관계에서 유의성이 높은 부의 상관관계가 나타났다. 5. 백미 품질은 유기재배구에서 파쇄미의 증가로 완전립 비율이 낮았지만, 단백질함량이 관행재배구에 비해 낮아 전반적인 품질 및 윤기치가 높아졌다. 6. 쌀 재배 순수익은 관행재배구에서 36만원/10a, 유기재배구에서 61만원/10a로 유기재배구의 순수익이 68% 높게 나타났다. This study was carried out to investigate the economic value of organic rice production using gelatin chitin microorganisms in eco-friendly complex, Gongsan, Naju city. The soil condition of experiment paddy field was Jeonbuk series and silt loam with a slightly poor drainage. Except for the high effective silicate, the chemical characteristics of soils used were included in the optimum range of paddy soils in Korea. In growth, plant length, tiller number, ear number, and ear length were observed to be higher in conventional paddy fields than organic paddy fields. However, number of grain per panicle and grain filling ratio (%) were higher in organic paddy fields than conventional paddy fields. Incidences of diseases and insect pests were slightly higher in the organic paddy fields. Water weevil, sheath blight, rice leaf roller and rice blast were more occurred in organic paddy field. On the other hand, false smut was higher occurred in conventional paddy field. There was a significant negative correlation between rice sheath blight and rice leaf roller, and rice yield. In the milled rice quality, the quality of organically cultivated milled rices was lower by the increase of broken rice than that of conventionally cultivated milled rices. The quality and palatability of rice were higher in organic cultivation with decreasing of protein content. Net income of conventionally and organically cultivated rice was 360,000 won/10a and 610,000 won/10a, respectively. Premium net income of the organically cultivated rice was 68%.

최근 3년간 전남지역의 스탠다드 국화 시설재배에서의 병해충 발생 양상

유용권(Yong Kweon Yoo),차광홍(Kwang Hong Cha),안규빈(Kyu Bin Ahn),황인택(In Taek Hwang),조경철(Kyung Chul Cho),안홍균(Hong Gyun Ahn) 한국원예학회 2011 한국원예학회 학술발표요지 Vol.2011 No.5

젤라틴·키틴분해미생물을 이용한 밀 유기재배와 관행재배의 생육, 병해충 발생조사 및 경제성 분석

안필립 ( Ahn Philip ),이지호 ( Lee Jiho ),차광홍 ( Cha Kwang-hong ),서동준 ( Seo Dong-jun ),안규남 ( An Kyu-nam ),윤창용 ( Yoon Chang-yong ),김길용 ( Kim Kil-yong ),정우진 ( Jung Woo-jin ) 한국유기농업학회 2021 韓國有機農業學會誌 Vol.29 No.2

This study was carried out to investigate the economic value of organic wheat production using gelatin·chitin microorganisms in Gwangsan-gu, Gwangju city. The soil condition of experiment field was clay loam Jisan series. The organically cultivated fields were sprayed gelatin and chitin degrading bacteria. The test was performed at conventionally cultivated field and organically cultivated field. Emergence of weed on organically cultivated field was significantly higher than conventionally cultivated field which sprayed herbicide before seeding. Weed emergence have a critical impact on grain yield. Occurrence of diseases and insect pests were higher than conventionally cultivated fields. In 2019, the amount of lodging in conventionally cultivated field were higher than conventionally cultivated field. In 2020, lodging and wet injury were occur in both field. Comparing yield element between organically and conventionally cultivated experimental area, grain yield in organically cultivated field was shown slightly higher amount than conventionally cultivated field. However in the actual yield of 2019, organically cultivated field shows 20% deceased yield because of overgrown weed. In 2020, weed emergence and yellow mosaic virus by wet injury cause 30% decease in the grain yield in organically cultivated field. Content of protein, carbohydrates, ash, water and fat in the grain were not different significance. In 2019, net incomes of conventionally cultivated wheat was 461,031 won/0.1 ha while organically cultivated wheat was 443,437 won/0.1 ha. In the rate of income, conventionally cultivated field was 83.0% as against organically cultivated field (73.3%). In 2020, net incomes of organically cultivated wheat was 437,812 won/0.1 ha while conventionally cultivated wheat was 418,281 won/0.1 ha. In the rate of income, conventionally cultivated field was 81.6% as against organically cultivated field (73.0%).

차나무의 병해 IV. Glomerella cingulata에 의한 차 붉은잎마름병

박서기(Seur-Kee Park),최용수(Yong-Soo Choi),차광홍(Kwang-Hong Cha) 한국차학회 1998 한국차학회지 Vol.4 No.1

Brown blight of tea(Camellia sinensis(L.) Kuntze) was observed at tea plantations of Boseung, Chonnam Province in 1992-1994. Circular to irregular spots appeared on margins and insides of mature leaves, and then black dot-like acervuli were radially formed on the lesions. The casual fungus of brown blight was identified as Glomerella cingulata(Stonem) Spaulding & Schrenk. Symptoms by G. cingulata appeared on injured leaves after ca 10 days and on intact leaves ca 25 days after artificial inoculation.

논에서 개구리밥 발생과 방제 특성

임일빈(Il-bin Im),정병춘(Byeong-chun Jung),차광홍(Kwang-hong Cha),홍경희(kyeong-hee Hong) 한국잡초학회 2010 한국잡초학회 별책(학술대회 초록집) Vol.30 No.2

친환경농업 농가 컨설팅에 대한 반응 조사

오환중,차광홍,정우진,김길용,박노동 全南大學校 農業科學技術硏究所 2011 農業科學技術硏究 Vol.46 No.-

The interactions between Environment-Friendly Agriculture Research Center (EFARC) and farmers in Jeonnam Province area who have practiced environment-friendly agriculture (EFA) under guidances of EFARC were investigated through enquete. The enquete was conducted during July - September, 2010. One hundred and eighty nine farmers responded all inquiries among 200 farmers. The main results are summarized as follows: 1. Rice was the predominant crop grown by farmers (49%), and the next major was hot pepper (12%). Most farmers (95.3%) have practiced environment-friendly agriculture at the levels of no-pesticide (55.6%), lower pesticide (32.8%), and organic (6.9%). 2. Major motivations of practicing EFA are for the production of safe foodstuffs (52.6%) and for an increase of income (40.1%). 3. Around 3 quarters of the environment-friendly agriculture products are shipped through Nonghyup, the cooperative marketing. The price margin between ordinary agriculture products and EFA products was of 5~10% for 63.5% farmers, of 10~20% for 14.3% ones, and of 20~30% for 14.8% ones. 4. Bottlenecks for practicing EFA are in the order of the unstability of shipping price (34.9%), cultivation techniques (20.1%), excess labor input (19.6%), and control of disease and insect pest (18%). 5. It turned out that more than 90% farmers who have practiced EFA under guidance of EFARC recognized the consulting activities of EFARC as to be helpful for them. 6. Establishment of national organizations which are specialized in consultation for EFApracticing farmers has been suggested.