공정 운전방식이 자가영양균의 퍼클로레이트 제거효율과 친화도에 미치는 영향

정성수 ( Seong Soo Cheong ),이상형 ( Sang Hyung Lee ),이중원 ( Joong Won Lee ),서창원 ( Chang Won Suh ),신항식 ( Hang Sik Shin ) 한국물환경학회 ( 구 한국수질보전학회 ) 2008 공동 추계학술발표회 Vol.2008 No.-

Botrytis cinerea에 의한 무화과 잿빛곰팡이병

정성수 ( Seong Soo Cheong ),최인영 ( In Young Choi ),이왕휴 ( Wang Hyu Lee ) 한국균학회 2013 韓國菌學會誌 Vol.41 No.1

In 2010 and 2011, gray mold was found on common fig (Ficus carica) fruit grown at the research field of Jeollabukdo Agricultural Research and Extension Services, Korea. Gray mold symptoms on common fig fruit mainly occurred after harvest season until December. The typical symptom included brown water-soaked rot and fruit decay. The diseased fruit was covered by gray to brown colored conidiophore and conidia. The conidiophores were tree shape and measured 15-33 × 2 μm. Conidia on conidiophore were ellipsoidal or lemon shape, colorless, single cell, and measured 7.3-14.6 × 6.8-11.1 μm. The nucleotide sequences of the rDNA ITS region obtained from the pure culture of the gray mold on common fig were 100% similar to the sequences of the GenBank accession number HQ171052, EU519210, HQ171053, FN812726, HM849615, and EU563120 of B. cinerea isolates. In phylogenetic tree, the representative isolate was placed within same clade of B. cinerea. Based on the morphological characteristics and analysis of rDNA ITS sequence data, the fungus was identified as B. cinerea.

보리호위축병 바이러스에 감염된 보리조직의 세포학적 관찰

소인영,정성수,So, In-Young,Cheong, Seong-Soo 한국현미경학회 1990 Applied microscopy Vol.20 No.1

The zoospores of Polymyxa graminis known as vector of barley yellow mosaic virus(BYMV) were found from the rootlets of diseased barley plants. The X-bodies in the lower epidermis of diseased leaf tissues were reddish under fluorescence microscopy. The shape of virus particles was flexuous rod and 300-1,000 nm in length. The pinwheel structures, cylindrical inclusion bodies, ring-form inclusion bodies, and crystalline lattice-like structure were found together with virus particles in the cytoplasm of diseased leaf tissues. Generally, intracellular organelles in the diseased barley leaf tissues infected with BYMV were either not well-developed or degenerated.

호남지방에 발병되는 땅콩바이러스의 분리, 동정 및 종자전염

소인영,정성수,전길형,So, In-Young,Cheong, Seong-Soo,Chon, Kil-Hyong 한국현미경학회 1992 Applied microscopy Vol.22 No.1

Viral disease incidence in the peanut fields at Iri, Kochang, Iksan and Puan in Chonbuk province was 0.93% on July and 8.46% on August in 1991. The causal pathogen was identified as peanut stripe virus (PStV) by the results of host plant reaction, immunological assay and observation of virus particles. Seed transmission rates of collected seeds from diseased plants ranged from 12.9 to 14.8% at peanut fields. PStV transmission was higher in small than in large seeds. Seed transmission of PStV was correlated with the age of the plant when inoculated; infection of young plants resulted in more seed transmission than did infection of old plants. Seed transmission of PStV was correlated with pod formation stages when inoculated at the 45th day after sowing; formed seeds for 2 weeks after inoculation resulted in more seed transmission than did formed seeds after 4 weeks. In seed transmission, this causal virus was moved to embryo and cotyledon through gynophore, pod, and funicle from leaves.

수확후 배 푸른곰팡이병을 일으키는 Penicillium속의 종류 및 특성

김주희,이왕휴,정성수,최정식,류정,최영근,Kim, Ju-Hee,Lee, Wang-Hyu,Cheong, Seong-Soo,Choi, Joung-Sik,Ryu, Jeong,Choi, Yeong-Geun 한국식물병리학회 2002 식물병연구 Vol.8 No.2

수확 후 피해를 주는 Penicillium속의 병원체를 분리 동정하기 위하여 여러 특성을 조사하였다. 저장 중 배에서 분리한 198균주는 상처 접종과 무상 접종에서 병반을 형성하여 병원성이 있었으며, 균총 크기와 형태, 색, 배지뒷면 색소와 포자형태 등의 특성에 따라 15개 그룹으로 나눌 수 있었다. 분리한 균주들은 배양·형태적·생리적 특성에 따라 P. expansum, P. solitum, P. crustosum 등 3종으로 동정되었다. 분리된 균주들의 병원성 검정 결과 저온에서 상처접종이 무상접종 보다 병원성이 강하게 나타났으며 P. expansum이 저장 배 과실에 대해 가장 병원성이 강하였고, P. solitum과 P. crustosum은 약한 편이었다. This study was carried out to identify the causal pathogens and investigated the characteristics of Penicillium spp. isolated from postharvest decay of pear. One hundred and ninety eight Penicillium spp. were isolated from infected pear fruits. The lesions were formed when the isolated pathogen were inoculated into the wounds and unwounds of pear fruit. Total isolates were classified into 15 groups by the size, color, pigment of colony and shape of conidia. These isolates were identified to be P.expansum, P.solitum, and P.crustosum according to the types of morphological, cultural and physiological characteristics. The pathogenicity was higher in wound inoculation at low temperature than unwound one. This result confirmed that wound promoted the disease appearance. P.expansum was appeared to have the most strong virulence, whereas P.solitum and P.crustosum were classified as weak virulent species by pathogenicity test on pear fruits.

복분자딸기에서 차응애의 발생소장과 천적과 살비제 교호사용의 방제효과

임주락,유진,정성수,최동칠,황창연,Lim, Ju-Rak,You, Jin,Cheong, Seong-Soo,Choi, Dong-Chil,Hwang, Chang-Yeon 한국응용곤충학회 2010 한국응용곤충학회지 Vol.49 No.3

복분자딸기에 발생하는 차응애의 발생소장과 방제적기를 조사하고, 천적과 살비제의 교호사용에 의한 방제효과를 검토하였다. 2006년부터 2008년까지 익산지역에서 차응애는 5월 하순부터 발생하기 시작하여 6~7월에 밀도가 높았다가 8월 이후에 낮아지는 경향으로 조사기간 동안에 년 2~4회 발생피크를 보이는 것으로 나타났다. 살비제에 의한 차응애 적정 방제시기는 5월 상순부터 중순까지였으며, 방제방법으로는 차응애 발생 초기에 살비제와 천적을 교호로 처리하였을 때 차응애에 대한 밀도억제 효과가 가장 우수하였으며, 수량도 무처리(559kg/10a)에 비하여 638kg/10a로 가장 높았다. Seasonal occurrence and suitable time of control of Tetranychus kanzawai along with the control efficacy of the alternative use of natural predator and miticide was investigated in Rubus coreanus (Miquel). T. kanzawai appeared in late May with its peak between June and July, and decreased after August in R. coreanus. In Iksan, T. kanzawai estimates show peaks 2~4 times per year during the investigation periods from 2006 to 2008 in R. coreanus fields. Suitable time of control of T. kanzawai was in early to mid May. And control effects of T. kanzawai was improved with an alternated control plot, treating miticides in early-occurrence of T. kanzawai and then releasing the natural predator (Phytoseiulus persimilis Anthias-Henriot). Also, the yields of R. coreanus was highest in the alternated control plot of 638kg/10a compared to non-treatment of 559kg/10a.

흰띠명나방의 온도발육 모형

이상구,김주,정성수,김연국,이상계,황창연,Lee, Sang-Ku,Kim, Ju,Cheong, Seong-Soo,Kim, Yeon-Kook,Lee, Sang-Guei,Hwang, Chang-Yeon 한국응용곤충학회 2013 한국응용곤충학회지 Vol.52 No.1

비트의 주요 해충인 흰띠명나방을 9개의 다른 온도조건(15.0, 17.5, 20.0, 22.5, 25.0, 27.5, 30.0, 32.5 및 $35.0^{\circ}C$), 상대습도 $65{\pm}5%$, 광조건 16L:8D에서 발육특성을 조사한 결과, 알에서 성충 우화 전까지의 발육기간은 $17.5^{\circ}C$에서 51.0일로 가장 길었고, $35^{\circ}C$에서 14.6일로 가장 짧게 조사되었다. 온도와 발육율의 관계를 직선회귀에 의해 분석한 결과, 결정계수($R^2$) 값이 0.87 이상으로 나타났으며, 온도에 따른 발육은 직선회귀에 부합되었다. 알부터 성충 우화 전까지의 발육영점온도와 유효적산온도는 $10.4^{\circ}C$와 384.7일도를 나타내었다. 각 태별 발육모형은 $R^2$값이 0.97~0.99로 비선형회귀식에 잘 부합되었다. 각 태별 발육누적분포와 발육기간에 대한 평균 발육기간으로 나눈 값을 Weibull 함수에 적용한 결과 $r^2$값이 0.63~0.87이었다. The Hawaiian beet webworm (Spoladea recurvalis) is one of the serious insect pests found on red beet (Beta vulgaris var. conditiva) in Korea. The study was conducted to investigate the development period of S. recurvalis at various constant temperatures, 15.0, 17.5, 20.0, 22.5, 25.0, 27.5, 30.0, 32.5 and $35.0^{\circ}C$, with $65{\pm}5%$ RH and a photoperiod of 16L:8D. The developmental period from egg to pre-adult was 51.0 days at $17.5^{\circ}C$ and 14.6 days at $35.0^{\circ}C$. The developmental period of S. recurvalis was decreased with increasing temperature. The relationship between the developmental rate and temperature was fitted well by linear regression analysis ($R^2{\geq}0.87$). The lower developmental threshold and effective accumulative temperature of the total immature stage were $10.4^{\circ}C$ and 384.7 degree days, respectively. The nonlinear relationship between the temperature and developmental rate was well described by the Lactin model. The relationship between the cumulative frequency and normalized distributions of the developmental period for each life stage were fitted to the Weibull function with $R^2=0.63{\sim}0.87$.

가지 담배가루이 방제를 위한 Neem제 처리농도 설정

김주,최인영,김주희,이장호,정성수,Kim, Ju,Choi, In-Young,Kim, Ju-Hee,Lee, Jang-Ho,Cheong, Seong-Soo 한국유기농업학회 2014 韓國有機農業學會誌 Vol.22 No.3

Neem제를 이용한 가지 담배가루이 친환경 방제기술을 개발하고자 azadirachtin 0.5%가 함유된 Neem제를 100~2,000배까지 희석배수 5처리를 두고, 담배가루이 방제효과와 가지생육과 수량을 조사하였으며, 경제성을 분석하였다. 담배가루이 성충과 약충의 발생상황은 Neem제 희석배수가 높아질수록 성충과 약충의 발생량이 증가하여 방제효과가 낮았다. Neem제 처리농도별 가지 생육상황은 낮은 희석배수에서는 약해가 발생하였고, 높은 희석배수에서는 담배가루이에 의한 피해가 나타났다. 생육 및 수량은 48일후 조사에서 500배가 초장, 엽장, 절수 등 생육이 양호하였다. 또한 Neem제 500배 처리에서 과실의 발육이 좋아 수량성 및 상품률도 가장 높았다. 경제성 분석결과에서도 Neem제 500배 처리에서 10a당 13,545천원으로 소득이 가장 높았다. 따라서 담배가루이 방제를 위한 Neem제 희석배수는 500배였다. This experiment was carried out to develop an environmental friendly agriculture material (EFAM) using neem extract i.e. azadirachtin (0.5%), especially against Bemisia tabaci (Gennadius) in eggplant. Neem product was found to be very effective against both nymph and adult of B. tabaci. Yield and economic value of eggplant treated with neem extract were higher than other EFAMs used. Effect of different concentration of Neem product was also investigated on population density of B. tabaci. The growth and yield of eggplants were highest in plants treated with 500 times concentrated solution of neem product. Economic analysis showed that the income increased by 13,545 thousand won/10a from the plots treated with 500 times concentrated solution of neem product over control. The results suggested that 500 times concentrated solution of EFAM (azadirachtin 0.5%) could be a good controlling agent of B. tabaci in eggplants.

복분자딸기에서 발생하는 해충 종류 및 발생 양상

임주락,최선우,김주희,이기권,정성수,류정,황창연,Lim, Ju-Rak,Choi, Seon-U,Kim, Ju-Hee,Lee, Ki-Kwon,Cheong, Seong-Soo,Ryu, Jeong,Hwang, Chang-Yeon 한국응용곤충학회 2010 한국응용곤충학회지 Vol.49 No.2

2006년에서 2008년까지 전북지역의 복분자딸기에서는 차응애, 박쥐나방, 애모무늬잎말이나방, 무궁화잎밤나방, 장미흰깍지벌레 등 5종의 해충이 주로 발생하였다. 복분자딸기에서 발생하는 차응애와 무궁화잎밤나방 발생소장 조사결과 차응애는 5월 중순 발생을 시작하여 6월 하순, 7월 중순, 8월 하순 3회 발생피크를 보였고, 발생밀도는 엽당 10마리 이상이었다. 무궁화잎밤나방은 6월 중순부터 발생을 시작하여 7월 하순 발생피크를 보인 후 줄어들다가 10월 상순 다시 증가하는 경향이었다. 복분자딸기 수확 전에 발생하는 해충은 28종이었으며, 주요 해충은 차응애, 점박이응애, 대만총채벌레, 톱니무늬애매미충, 애모무늬잎말이나방, 초록장님노린재, 검정배줄벼룩잎벌레 7종이었다. 수확 후에 발생하는 해충은 19종이었고, 주요 해충은 차응애, 박쥐나방, 무궁화잎밤나방, 애모무늬잎말이나방, 검정배줄벼룩잎벌레, 장미흰깍지벌레 6종이었다. 해충관리를 하지 않고 방치한 포장에서는 복분자딸기의 생육이 저하되고, 수량은 매년 7%정도 감소하는 경향이었지만, 농약으로 해충관리를 한 포장에서는 차이가 없었다. In this study, 5 species (Tetranychus kanzawai Kishida, Endoclyta excrescens (Butler), leaf roller caterpillar (Adoxophyes orana Fisher), Anomis mesogona (Walker), and Aulacaspis rosae (Bouche)) were found in Rubus coreanus Miquel in Jeonbuk province, from 2006 to 2008. T. kanzawai appeared in mid-May and showed three peaks in late June, mid-July, and late August. Its density was over 10 adults per leaf. A. mesogona appeared in mid-June and showed two peaks in late July, and early October. Of the 28 insect pests in pre-harvesting, the 7 main species were T. kanzawai, T. urticae, A. orana, Lygocoris lucorum Meyer, Frankliniella intonsa (Trybom), Psylliodes punctifrons Baly and Motschulskyia serrata (Matsumura). Of the 19 insect pests in after-harvesting, the 6 main species were T. kanzawai, E. excrescens, A. mesogona, A. orana, P. punctifrons and A. rosae. Growth of R. coreanus decreased when insect pests were not managed and yields decreased approx. 7% a year. Management of insect pests in field using pesticide was not different.

유리 온실내 온도변화에 따른 장미 흰가루병 발생

김형무(Hyung Moo Kim),정성수(Seong Soo Cheong),김정만(Jeong Man Kim),정종성(Jong Sung Jeong),최정식(Joung Sik Choi) 전북대학교 농업과학기술연구소 1998 농업생명과학연구 Vol.29 No.-