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Winter Wheat Grain Yield Response to Fungicide Application is Influenced by Cultivar and Rainfall
Emmanuel Byamukama, Shaukat Ali, Jonathan Kleinjan, Dalitso N. Yabwalo, Christopher Graham, Melanie Caffe-Treml, Nathan D. Mueller, John Rickertsen, William A. Berzonsky 한국식물병리학회 The Plant Pathology Journal 8 Pages
한국식물병리학회 The Plant Pathology Journal 2019, 35권 1호 7 63-70 (8 pages)
The best independent weather variable relat- ing yield response to fungicide application and weather variables was selected based on the largest coefficient of determination (R 2) and low predicted error sum of squares (Bowerman and OConnell, 1990). Results Weather characteristics, grain yield, protein content, and test weight. The Brookings location in 2014 received the highest total rainfal... a positive and significant linear relationship with cumulative rainfall in May through June for the mid and top grain yield ranked cultivars (R2=54%, 78%, respectively) indicating that a higher amount of accumulated rainfall in this period increased chances of getting a higher yield response from fungicide application. Cultivars treated with a fungicide had slightly higher protein content (up to 0.5%) compared to non-treated. These results indicate that application of fungicides when there is... -
Error Forecasting Using Linear Regression Model
Lian Guey Ler, Byung Sik Kim, Gye Woon Choi, Byung Hwa Kang, Jung Jae Kwang 한국습지학회 한국습지학회지 11 Pages
한국습지학회 한국습지학회지 2011, Vol.13 No.1 2 13-23 (11 pages)
recent development has produce more computation- cost-effective methods like the ensemble Kalman filter (EnKF) and reduce rank root filter (RRSQRT). The updating of output variables, also called error forecasting, uses a model to fit the model errors which is then used to forecast the model errors in the future. This forecast error is then added to the model prediction itself to produce a... -
Characterization of Xanthomonas citri pv. glycines Population Genetics and Virulence in a National Survey of Bacterial Pustule Disease in Korea
In-Jeong Kang, Kyung Seok Kim, Gwyn A. Beattie, Hyunjung Chung, Sunggi Heu, Ingyu Hwang 한국식물병리학회 The Plant Pathology Journal 10 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 6호 14 652-661 (10 pages)
in climate. Given the favorability of high temperatures and heavy rainfall to bacterial pustule development, decreased disease would more likely be an outcome of water restriction and drought events in agri- cultural areas than warming temperatures (Lee and Shin, 2021). Our survey data also indicated that the incidence of bacterial pustule in Korea over doubled between 2016 and 2017. This... Xanthomonas citri pv. glycines (Xcg) is a major patho- gen of soybean (Glycine max) in South Korea, de- spite the availability of soybean varieties with some resistance. We conducted a nationwide survey of the incidence and severity of bacterial pustule caused by Xcg. The percentage of infected fields was 7% to 17% between 2015 and 2017. We characterized the diver- sity of a nationwide collection of 106 Xcg isolates based on avrBs3 banding patterns. The isolates fell into 11 groups, each... -
Bio-control of Stem Rot in Jerusalem Artichoke (Helianthus tuberosus L.) in Field Conditions
Chutsuda Junsopa, Weerasak Saksirirat, Suwita Saepaisan, Patcharin Songsri, Thawan Kesmala, Barbara B. Shew, Sanun Jogloy 한국식물병리학회 The Plant Pathology Journal 9 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 5호 2 428-436 (9 pages)
a least significant difference test was used to test the differences among treatments. Results Soil and meteorological data. Total rainfall was 447 and 434 mm for environment 1 (fertilized field) and environ- ment 2 (unfertilized field), respectively (Fig. 1). Tempera- Fig. 1. Rainfall, relative humidity, maximum and minimum temperature of the experiment during July-October 2015. Environment 1... Stem rot is a serious disease in Jerusalem artichoke (JA). To reduce the impact of this disease on yield and quality farmers often use fungicides, but this control method can be expensive and leave chemical residues. The objective of this study was to evaluate the efficacy of two biological control agents, Trichoderma harzia- num T9 and Bacillus firmus BSR032 for control of Scle- rotium rolfsii under field conditions. Four accessions of JA (HEL246, HEL65, JA47, and JA12) were treated or... -
The Bacillus zanthoxyli HS1 Strain Renders Vegetable Plants Resistant and Tolerant against Pathogen Infection and High Salinity Stress
Alisher Usmonov, Sung-Je Yoo, Sang Tae Kim, Ji Sun Yang, Mee Kyung Sang, Ho Won Jung 한국식물병리학회 The Plant Pathology Journal 7 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 1호 6 72-78 (7 pages)
rainfall is difficult. Indiscreet fertilization and continuous cultivation also result in eutrophication and salt accumulation in arable lands (Flowers, 2004; Munns and Gilliham, 2015; Yoo et al., 2019). Thus, it is known that about 7% of arable land and 20% of irrigated farm fields are under salinity stress (Flowers and Yeo, 1995; Ruan et al., 2010). In these cases, plants are put at risk... Various management systems are being broadly em- ployed to minimize crop yield loss resulting from abi- otic and biotic stresses. Here we introduce a Bacillus zanthoxyli HS1 strain as a potent candidate for manag- ing manifold stresses on vegetable plants. Considering 16S rDNA sequence and biochemical characteristics, the strain is closely related to B. zanthoxyli. The B. zanthoxyli HS1 s soil-drench confers disease resistance on tomato and paprika plants against infection with Ralstonia... -
Application of Numerical Weather Prediction Data to Estimate Infection Risk of Bacterial Grain Rot of Rice in Korea
Hyo-suk Kim, Ki Seok Do, Joo Hyeon Park, Wee Soo Kang, Yong Hwan Lee, Eun Woo Park 한국식물병리학회 The Plant Pathology Journal 13 Pages
한국식물병리학회 The Plant Pathology Journal 2020, 36권 1호 5 54-66 (13 pages)
such as temperature, rainfall, leaf wetness duration and relative humidity (Duthie, 1997; Fernandes et al., 2014; Huber and Gillespie, 1992; Lalic et al., 2016). In general, weather-driven models require hourly and/or daily *Corresponding author. Phone) +82-2-880-4672, FAX) +82-2-872-2317 E-mail) ewpark@snu.ac.kr ORCID Hyo-suk Kim https://orcid.org/0000-0002-3031-9333 Joo Hyeon Park... This study was conducted to evaluate usefulness of numerical weather prediction data generated by the Unified Model (UM) for plant disease forecast. Using the UM06- and UM18-predicted weather data, which were released at 0600 and 1800 Universal Time Coordinated (UTC), respectively, by the Korea Meteorological Administration (KMA), disease forecast on bacterial grain rot (BGR) of rice was examined as compared with the model output based on the automated weather stations (AWS)-observed weather... -
MBCAST: A Forecast Model for Marssonina Blotch of Apple in Korea
Hyo-suk Kim, Jung-hee Jo, Wee Soo Kang, Yun Su Do, Dong Hyuk Lee, Mun-Il Ahn, Joo Hyeon Park, Eun Woo Park 한국식물병리학회 The Plant Pathology Journal 13 Pages
한국식물병리학회 The Plant Pathology Journal 2019, 35권 6호 5 585-597 (13 pages)
mean and percentile of accumulated airborne spore catches during days of rain events (DR) and the following dry days without rainfall of 0.5 mm after the end of individual rain events in 2013 (A) and 2015 (B). The periods of power failure in 2015 were excluded in the calculation. Table 2. Weather variables selected to explain variations in the number of airborne spore catches in 2013 Variable b... rainy days with rainfall ≥ 0.5 mm per day (Lday), maximum hourly rainfall (Pmax) and average daily maximum wind speed (Wavg) during a rain event were most appropriate in describing variations in airborne spore catches during SLP (Si) in 2013. The ASM, Ŝi = 30.280+5.860×Lday×Pmax-2.123×Lday×Pmax×Wavg was statistically significant and capable of predicting the amount of airborne spore catches during SLP in 2015. Assuming that airborne conidia liberated during SLP cause leaf infections... -
Variability of Stem-Base Infestation and Coexistence of Fusarium spp. Causing Crown Rot of Winter Wheat in Serbia
Radivoje Jevtić;Nemanja Stošić;Vesna Župunski;Mirjana Lalošević;Branka Orbović 한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2019, 35권 6호 2 553-563 (11 pages)
reported as dominant species in the arid zones of the Pa- cific Northwest and Australia (Poole et al., 2013). On the other hand, F. culmorum was predominant in the cooler, higher altitude and high rainfall areas (Smiley et al., 2005). F. graminearum was reported to be dominant in eastern Australia and southern Europe (Xu et al., 2018). Bipolaris sorokiniana was reported to be prevalent in the... Investigations related with factors influencing root and crown rot are rare and mainly related to farming practice and soil management. The main objective of this study was to examine broader range of factors influencing stem-base infestation of winter wheat in the field conditions. The effect of spatial distribution of infected plants on disease index (DIs) assessments was also investigated. Analysis of factors influencing DIs of crown rot of wheat demonstrated significant influence of the...