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Artykuły w czasopismach na temat „Late Blight Incidence”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Johnson, Dennis A., Thomas F. Cummings, Rita Abi Ghanem, and J. Richard Alldredge. "Association of Solar Irradiance and Days of Precipitation with Incidence of Potato Late Blight in the Semiarid Environment of the Columbia Basin." Plant Disease 93, no. 3 (2009): 272–80. http://dx.doi.org/10.1094/pdis-93-3-0272.

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The effects of cumulative solar irradiance and rainfall on incidence of potato late blight (caused by Phytophthora infestans) in the Columbia Basin of south-central Washington and north-central Oregon were investigated using meteorological data collected near Othello, WA from 1990 through 2007 and Prosser, WA from 1990 through 2006. An association between solar irradiance and seasonal differences in late blight epidemics has not been quantitatively determined. Incidence of late blight in the Columbia Basin significantly increased as cumulative solar irradiance decreased during 1 April to 31 Ju

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2

Olanya, Ocen Modesto, Robert Philip Larkin, and Charles Wayne Honeycutt. "Incidence of Phytophthora infestans (Mont.) de Bary on potato and tomato in Maine, 2006–2010." Journal of Plant Protection Research 55, no. 1 (2015): 58–68. http://dx.doi.org/10.1515/jppr-2015-0009.

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Abstract Late blight, caused by Phytophthora infestans (Mont.) de Bary, is a devastating disease which is found worldwide. In Maine, United States (US), we recorded late blight on potato and tomato during the 2006-2009 cropping seasons. From 2006 to 2008, over 90% of the diseased samples were collected in potato fields from northern and central Aroostook County in Northern Maine, US. Then, in 2009, an unprecedented influx of inoculum on infected tomato transplants shipped to retail garden centers throughout the Northeast US significantly changed the late blight infection patterns. In 2009, 43%

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3

Choi, Hyo-Won, Woohyung Lee, Mun-Il Ahn, et al. "Specific Weather Factors Affecting the Incidence of Fire Blight in Korea from 2020 to 2023." Research in Plant Disease 30, no. 3 (2024): 300–303. http://dx.doi.org/10.5423/rpd.2024.30.3.300.

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Since its initial outbreak in Korea in 2015, fire blight has consistently emerged annually. Fire blight outbreaks usually begin in May, peak in June, and decline in July in Korea. In this study, we analyzed cases that exhibit a distinct pattern of disease occurrence based on yearly weather conditions from 2020 to 2023. In 2020, fire bight disease occurrence began in late May. Although the disease incidence started late by the low temperatures in April, which caused flowering period delayed, the incidence increased significantly due to the high risk of blossom infection. In 2021, the first outb

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Misgana, Mitiku, and Eshete Yesuf. "MANAGEMENT OF POTATO LATE BLIGHT THROUGH HOST PLANT RESISTANCE AND FUNGICIDE USE IN SOUTH OMO ZONE, SNNPR, ETHIOPIA." .INTERNATIONAL JOURNAL OF RESEARCH- GRANTHAALAYAH 5, no. 5 (2017): 342–48. https://doi.org/10.5281/zenodo.802344.

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The study was carried out in April 2015 at South Ari district, Senmamer kebele of South Omo Zone Southern Nation Nationality People Regional State to test and demonstrate the effects of integrating host resistance and fungicide application for management of potato late blight disease. In this experiment one relatively late blight resistance improved Irish potato variety (Belete) was collected from Holleta Seed producer Association and susceptible local control potato varieties were used. RCBD with four replications (farmers as replication) were used. A recommended rate of CurzateR R WP fungici

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5

Prasad, Durga, and R. N. Singh. "Major diseases of field and horticultural crops in Northern Bihar region of India." INTERNATIONAL JOURNAL OF PLANT SCIENCES 17, no. 2 (2022): 180–90. http://dx.doi.org/10.15740/has/ijps/17.2/180-190.

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A survey was conducted to determine the status of major diseases of field and horticultural crops grown in Saharsa, Supaul, Madhepura and Khagaria districts of northern Bihar, India. Three blocks in each district and three villages in each block were surveyed through a random field survey method. Per cent disease incidence was recorded on randomly selected plants in a particular field of selected location. The incidence of diseases was observed on the basis of typical field symptoms and later the association was confirmed through microscopic examinations in the laboratory. In view of maximum d

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6

Kapsa, Józef. "Late blight (Phytophthora infestans) occurring on stems - a new problem in potato crops." Acta Agrobotanica 55, no. 1 (2013): 127–36. http://dx.doi.org/10.5586/aa.2002.013.

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In recent years changes in the occurrence of the first potato late blight (<i>Phytophthora infestans</i>) symptoms have been noted. Observations of potato crops have showed that occurrence of the blight symptoms is sometimes on the stem instead on the leaves. The aim of the study carried out in 1995-2001 was to determine occurrence and harmfulness of the stem late blight infections. Survey of many potato crops (490 potato fields) made in 1997-2001, around Poland enabled assessment of the incidence of stem blight. Average 69,1% of observed crops were affected with stem blight. The s

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7

Mehmood, Basharat, Aneela Azad, Nasir Rahim, et al. "Late Blight of Potato (Phytophthora Infestans) Management through Botanical Aqueous Extracts in Temperate Climatic Conditions." International Journal of Phytopathology 11, no. 1 (2022): 35–42. http://dx.doi.org/10.33687/phytopath.011.01.4131.

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Phytophthora infestans causing late blight is one of the most devastating tomato and potato disease that caused considerable yield losses globally including Pakistan. Due to repeated and injudicious synthetic fungicides applications for the control of late blight of potato, the fungicide resistance in P. infestans led to persistence and surveillance late blight of potato. The study was carried out to evaluate the efficacy of Garlic (Allium sativum), Neem (Azadirachta indica), Turmeric (Curcuma longa), Mint (Mentha) at 10%, 20% and 30% concentration as bio-fungicides against late blight of pota

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8

Vincent, Dietchou Paolo, Keuete Kamdoum Elie, and Tsopmbeng Noumbo Gaston. "Impact of Introduced Tomato Cultivars and Chemical Fungicides on the Occurrence and Intensity of Late Blight in Western Cameroon." Journal of Experimental Agriculture International 45, no. 9 (2023): 71–84. http://dx.doi.org/10.9734/jeai/2023/v45i92177.

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Late blight, caused by Phytophthora infestans, is the main constraint to tomato production and exportation in Cameroon. The objective of this study was to evaluate the impact of chemical and tomato varieties in the control of tomato Late blight in the field for the improvement of tomato production in the west region of Cameroon. Seedlings of 7 tomato varieties produced in the nursery were transplanted into pits each containing 100 g of fowl droppings and 30 g of the nematicide Carbofuran 5%. From the 21st day after transplanting, the different fungicides were applied every four days. Data were

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9

Mitiku, Misgana, and Yesuf Eshete. "MANAGEMENT OF POTATO LATE BLIGHT THROUGH HOST PLANT RESISTANCE AND FUNGICIDE USE IN SOUTH OMO ZONE, SNNPR, ETHIOPIA." International Journal of Research -GRANTHAALAYAH 5, no. 5 (2017): 342–48. http://dx.doi.org/10.29121/granthaalayah.v5.i5.2017.1866.

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The study was carried out in April 2015 at South Ari district, Senmamer kebele of South Omo Zone Southern Nation Nationality People Regional State to test and demonstrate the effects of integrating host resistance and fungicide application for management of potato late blight disease. In this experiment one relatively late blight resistance improved Irish potato variety (Belete) was collected from Holleta Seed producer Association and susceptible local control potato varieties were used. RCBD with four replications (farmers as replication) were used. A recommended rate of CurzateR R WP fungici

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10

Kherwa, Radhe Shyam, S. S. Solankey, Shirin Akhtar, and Mahendra Kumar. "Screening of Parents and Hybrids Resistant to Late Blight and Leaf Curl Virus Diseases in Tomato." International Journal of Environment and Climate Change 13, no. 2 (2023): 158–65. http://dx.doi.org/10.9734/ijecc/2023/v13i21670.

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The experimental material included 21 F1 hybrids (developed by half diallel fashion), 7 parents and standard check were all planted in randomized complete block design with three replications at Bihar Agriculture University, Sabour. Among the parents Pusa Rohini, Arka Vikash and S. pimpinellifolium whereas, among the crosses, Pusa Rohini × Arka Vikash, H-86 × Arka Vikash and Arka Vikash × S. pimpinellifolium were showed highly resistant for per cent disease incidence and coefficient of infection of late blight and ToLCV. Maximum heterosis over better parent and standard parent in desirable dir

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11

Johnson, Dennis A., Mel Martin, and Thomas F. Cummings. "Effect of Chemical Defoliation, Irrigation Water, and Distance From the Pivot on Late Blight Tuber Rot in Center-Pivot Irrigated Potatoes in the Columbia Basin." Plant Disease 87, no. 8 (2003): 977–82. http://dx.doi.org/10.1094/pdis.2003.87.8.977.

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Chemical desiccation of potato foliage 2 to 3 weeks prior to harvesting tubers is commonly recommended to reduce late blight tuber rot. Observations in commercial fields indicate that this practice may not be needed to manage tuber rot in the semiarid environment of the Columbia Basin. Potatoes in this region are mostly grown under center pivot irrigation, and a relatively high volume of irrigation water is often delivered near the pivot in center-pivot irrigated fields. This study evaluated the effect of chemical desiccation of potato foliage on late blight tuber rot and quantified the incide

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12

Anwar, MM, A. Parveen, MM Hossain, NU Mahamud, and RK Roy. "Efficacy of fungicides in controlling late blight of potato." Progressive Agriculture 26, no. 2 (2015): 103–8. http://dx.doi.org/10.3329/pa.v26i2.25963.

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Potato cultivars grown in Bangladesh have low levels of general resistance to late blight. As such, most commercial potato farmers rely on fungicide applications for control of Phytophthora infestans, the causal agent of late blight. Management of late blight of potato requires an integrated approach that includes rotation with non-hosts, resistant cultivars, cultural practices, and fungicides. The study on efficacy of some new fungicides against late blight disease of potato was conducted at ARS, Alamnagar Rangpur during rabi season 2010-2011 to select suitable fungicides against late blight

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13

Johnson, Dennis A., J. Richard Alldredge, Philip B. Hamm, and Bruce E. Frazier. "Aerial Photography Used for Spatial Pattern Analysis of Late Blight Infection in Irrigated Potato Circles." Phytopathology® 93, no. 7 (2003): 805–12. http://dx.doi.org/10.1094/phyto.2003.93.7.805.

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Spatial and temporal dynamics of late blight were investigated from color, infrared aerial photographs of five commercial potato fields in the Columbia Basin during epidemics in 1993, 1995, and 1998. Aerial photographs were taken one to four times at 6- to 21-day intervals. Photographs were scanned and pixels, representing approximately 1 m2 in the field, were used in the analysis. Late blight-infected plants were aggregated as indicated by runs analysis. Significant z-tests were computed for four directions during each sampling date in each of the five fields. Absolute z-values for runs analy

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14

Teshome, Zewdu, Asefa Sintayehu, and Asefa Zeleke. "Integrated Management of Late Blight Potato (Phytophthora infestans, (Mont) de Bary) Disease through Potato Varieties and Fungicides in Lay-Armachiho District, Ethiopia." Advances in Agriculture 2022 (August 23, 2022): 1–9. http://dx.doi.org/10.1155/2022/3880630.

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Potato (Solanum tuberosum L.) is an important source of livelihood for smallholder farmers of north-western Ethiopia. However, its productivity is markedly low due to late blight disease caused by Phytophthora infestans. The objective of this study was to evaluate the integrated use of potato varieties and fungicides for the management of late blight disease. Field experiment was conducted in Lay-Armachiho district during the main potato cropping season of 2018. The experiment consisted of twelve treatments as factorial combinations of two synthetic fungicides (Ridomil and Mancozeb) and untrea

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15

Johnson, Dennis A., Debra A. Inglis, and Jeffrey S. Miller. "Control of Potato Tuber Rots Caused by Oomycetes with Foliar Applications of Phosphorous Acid." Plant Disease 88, no. 10 (2004): 1153–59. http://dx.doi.org/10.1094/pdis.2004.88.10.1153.

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Phosphorous acid for control of tuber rots caused by Phytophthora infestans, P. erythroseptica, and Pythium ultimum was applied to foliage of potato cultivars at various application timings and rates under growing conditions in the Pacific Northwest at Othello and Mount Vernon, WA, and Bonners Ferry and Aberdeen, ID in 2001 to 2003. Efficacy was assessed by artificially inoculating harvested tubers. Mean incidence and severity of late blight tuber rot in tubers inoculated with US-8 and US-11 isolates of Phytophthora infestans usually were significantly less when the foliage from which the tube

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16

Scherm, H., and A. T. Savelle. "Epidemic Development of Hawthorn Leaf Blight (Monilinia johnsonii) on Mayhaw (Crataegus aestivalis and C. opaca) in Georgia." Plant Disease 87, no. 5 (2003): 539–43. http://dx.doi.org/10.1094/pdis.2003.87.5.539.

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Mayhaws are small trees and shrubs in the hawthorn genus, Crataegus. They are native to the southern United States, where their fruit is highly valued for use in jellies and preserves. Since 1997, symptoms of hawthorn leaf blight, caused by Monilinia johnsonii, have been observed in mayhaw orchards in southwestern Georgia. We studied epidemic development of the disease in a mixed planting of Crataegus aestivalis (eastern mayhaw) and C. opaca (western mayhaw) between 2000 and 2002. Apothecia of M. johnsonii were first observed in early to mid-February on overwintered, mummified fruit of C. aest

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17

Dar, Waseem Ali, Bilal Ahmad Bhat, Mohammad Mudasir Magray, et al. "Assessing potato cultivars for resistance against late blight under high altitudinal conditions of North Western Himalayas." Plant Protection 8, no. 3 (2024): 365–73. http://dx.doi.org/10.33804/pp.008.03.4873.

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Different stages in plant development significantly influence the incidence of potato late blight disease in India. In the present study, the disease progression was monitored weekly in five selected potato cultivars viz. Kufri Jyoti, Kufri Giriraj, Gulmarg Special, Shalimar Potato-I, and Gurez local, during the 2018 and 2019 cropping seasons. The severity of potato late blight, caused by Phytophthora infestans, increased with fluctuations in weather variables. Calculations for the area under the disease progress curve (AUDPC) and the rate of disease spread (r-value) at different growth stages

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18

Monjil, MS, and T. Ulfat. "Severity of potato late blight under different weather conditions in Mymensingh region of Bangladesh." Progressive Agriculture 31, no. 2 (2020): 74–80. http://dx.doi.org/10.3329/pa.v31i2.50711.

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An experiment has been conducted to observed the disease severity of late blight of potato in the different weather parameters viz., air temperature, soil temperature, dew points, percent relative humidity and period of sunshine. The experiment was conducted in the Net-house, Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh during July 2016 to November 2017. Weather data were collected on daily basis from BAU weather station during the experimental period. A significant role of weather parameters was detected in disease development and disease progress. Tempe

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19

VAIDHEKI M, DEB SANKAR GUPTA, PRADIP BASAK, MANOJ KANTI DEBNATH, SATYAJIT HEMBRAM, and AJITH S. "Prediction of potato late blight disease incidence based on weather variables using statistical and machine learning models: A case study from West Bengal." Journal of Agrometeorology 25, no. 4 (2023): 583–88. http://dx.doi.org/10.54386/jam.v25i4.2272.

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Late blight is one of the most devastating diseases on potato the world over, including West Bengal, India. The economic and yield losses from outbreaks of potato late blight can be huge. In this article, application of statistical models such as autoregressive integrated moving average (ARIMA), autoregressive integrated moving average with exogenous variables (ARIMAX) in combination with machine learning models such as, neural network auto regression (NNAR), support vector regression (SVR) and classification and regression tree (CART) have been explored to predict the percentage disease index

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Kandel, Yuba R., Xavier A. Phillips, John M. Gaska, Shawn P. Conley, and Daren S. Mueller. "Effect of Planting Population on Stem Diseases of Soybean in Iowa and Wisconsin." Plant Health Progress 22, no. 2 (2021): 108–12. http://dx.doi.org/10.1094/php-07-20-0062-rs.

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Farmers may adjust seeding rate across or within fields for a variety of reasons. The objectives of this study were to determine if seeding rate affected two late-season stem diseases, anthracnose stem blight (ASB) and pod and stem blight (PSB), and yield of soybean. Disease incidence, severity, and yield were collected from eight field trials in Iowa and Wisconsin during 2016 to 2018. ASB incidence exceeded 80% in most of the trials and significantly differed across years with the highest incidence in 2016 and 2018 compared with 2017, the year with the least precipitation. A similar trend acr

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Becktell, M. C., M. L. Daughtrey, and W. E. Fry. "Epidemiology and Management of Petunia and Tomato Late Blight in the Greenhouse." Plant Disease 89, no. 9 (2005): 1000–1008. http://dx.doi.org/10.1094/pd-89-1000.

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Factors affecting the management of petunia and tomato late blight, caused by Phytophthora infestans, under greenhouse conditions were investigated. Late blight-infected petunias (Petunia × hybrida) and tomatoes (Lycopersicon esculentum) each produced sporangia that were dispersed throughout the greenhouse via air currents. Infected petunias produced and released fewer sporangia than infected tomatoes, but infected petunias released sporangia two times longer. Surface-directed irrigation reduced disease incidence compared with overhead irrigation that wetted the foliage. The fungicides dimetho

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22

Jenkins, J. C., and R. K. Jones. "Classifying the Relative Host Reaction in Potato Cultivars and Breeding Lines to the US-8 Strain of Phytophthora infestans in Minnesota." Plant Disease 87, no. 8 (2003): 983–90. http://dx.doi.org/10.1094/pdis.2003.87.8.983.

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A total of 32 commercial cultivars grown in the United States and 15 potato breeding lines and non-U.S. cultivars were evaluated at Rosemount, MN for their reaction to the US-8 strain of Phytophthora infestans. Commercial red-, russet-, and white-skinned cultivars tested in the commercial cultivar trial (COMC) in 1996 and 1997 were susceptible (S) to moderately susceptible (MS) to this organism, except for Elba, which ranked as moderately resistant (MR). Yellow-fleshed cvs. Hertha, Santé, and Agria were screened in the late blight nursery (LB1) in 1997 and 1998 and classified as S to MS while

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Glass, J. R., K. B. Johnson, and M. L. Powelson. "Assessment of Barriers to Prevent the Development of Potato Tuber Blight Caused by Phytophthora infestans." Plant Disease 85, no. 5 (2001): 521–28. http://dx.doi.org/10.1094/pdis.2001.85.5.521.

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Experiments were conducted in an irrigated, sandy loam soil to evaluate mulches and hill sizes as barriers to prevent the development of potato tuber blight caused by Phytophthora infestans. In mulching experiments, five treatments were applied to field plots of cv. Red LaSoda: 1, no mulch; 2, polyurethane spray foam in an 8-cm-diameter area immediately surrounding the plant stem; 3, black polyethylene film over the entire hill except near the stem; 4, a combination of treatments 2 and 3; and 5, a water-permeable, agricultural textile treated with copper hydroxide applied over the same hill ar

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24

Hailu, Gudisa, Tekalign Zeleke, Tesfaye Abdisa, and Tajudin Alyi. "Evaluation of Fungicide Frequency and Rotation for Tomato Late Blight Management in Rain-Fed and Irrigated Conditions." Applied Sciences Research Periodicals 2, no. 8 (2024): 01–11. http://dx.doi.org/10.63002/asrp.28.517.

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Tomato late blight is among the major constraints that limit production in most tomato-growing areas. The field experiment was conducted in the Ambo Agricultural Research Center on-station and Toke Kutaye district in 2020/22 to evaluate fungicide application frequency and rotation and determine the economic cost of fungicide application for the management of late blight under rain-fed and irrigated conditions of tomato production. Cochoro, the tomato variety that is well adapted to the area, was used in the experiment. Five frequencies and rotations of fungicide application were arranged in an

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Pandit, Rishav, Ravi Bhatta, Pooja Bhusal, Basistha Acharya, Subash Subedi, and Jiban Shrestha. "Response of Local Potato Cultivars to Late Blight Disease (Phytophthora infestans (Mont.) de Bary) under Field Conditions." Agro Bali : Agricultural Journal 3, no. 1 (2020): 28–37. http://dx.doi.org/10.37637/ab.v3i1.464.

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Developing host resistance is an economic and long-term approach to disease management; however, resistance reactions that differ depending on the genotypes. Potato late blight is the devastating disease caused due to Phytophthora infestans (Mont.) de Bary. In order to identify late blight resistance in potato genotypes, seven local potato cultivars (Bardiya Rato Local, Bardiya Seto Local, Cardinal, Deukhuri Rato Local, Deukhuri Seto Local, Kailali Local and Khumal Ujjowal) were evaluated in randomized complete block design (RCBD) with three replications during October 2018 to January 2019 on

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Pandit, Rishav, Ravi Bhatta, Pooja Bhusal, Basistha Acharya, Subash Subedi, and Jiban Shrestha. "Response of Local Potato Cultivars to Late Blight Disease (Phytophthora infestans (Mont.) de Bary) under Field Conditions." Agro Bali : Agricultural Journal 3, no. 1 (2020): 28–37. http://dx.doi.org/10.37637/ab.v3i1.556.

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Developing host resistance is an economic and long-term approach to disease management; however, resistance reactions that differ depending on the genotypes. Potato late blight is the devastating disease caused due to Phytophthora infestans (Mont.) de Bary. In order to identify late blight resistance in potato genotypes, seven local potato cultivars (Bardiya Rato Local, Bardiya Seto Local, Cardinal, Deukhuri Rato Local, Deukhuri Seto Local, Kailali Local and Khumal Ujjowal) were evaluated in randomized complete block design (RCBD) with three replications during October 2018 to January 2019 on

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Toropova, E. Yu, T. P. Kolesnikova, and M. F. Tsarkova. "Leaf-stem diseases of soybean on varieties of diferent ripenity groups in the conditions of the Amur region." Bulletin of NSAU (Novosibirsk State Agrarian University), no. 3 (October 11, 2024): 104–12. http://dx.doi.org/10.31677/2072-6724-2024-72-3-104-112.

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The Amur region is the main producer of soybeans in the Russian Federation, where one of the significant phytosanitary problems of soybean cultivation technologies is leaf and stem infections. The susceptibility of soybeans to diseases varies greatly depending on weather conditions, used agricultural technology and the resistance of cultivated varieties. Since the soybean varieties, cultivated in the region, have significant differences in early maturity, it remains relevant to monitor leaf and stem infections and identify the degree of their development depending on the length of the crop gro

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Purwantisari, Susiana, Achmadi Priyatmojo, Retno Peni Sancayaningsih, and Rina Sri Kasiamdari. "Masa Inkubasi Gejala Penyakit Hawar Daun Tanaman Kentang yang Diinduksi Ketahanannya oleh Jamur Antagonis Trichoderma viride." Bioma : Berkala Ilmiah Biologi 18, no. 2 (2016): 41. http://dx.doi.org/10.14710/bioma.18.2.41-47.

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Late blight disease caused by Phytophthora infestans, is probably the single most important disease of potatoes worldwide. Infected plants were quickly killed and were difficult for replanting, causing significant losses for the growers. Various control methods were examined including the use of biocontrol agents of Trichoderma spp. The biocontrol potential of Trichoderma viride against potato late blight pathogen, Phytophthora infestans, were studied under greenhouse conditions. The research objective was to determine the ability of biocontrol agents Trichoderma viride to delay late blight di

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Shrestha, Krishna K., and Richard Ashley. "Integrated Disease Management of Tomato Late Blight." Nepal Agriculture Research Journal 8 (November 20, 2014): 67–76. http://dx.doi.org/10.3126/narj.v8i0.11583.

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Tomato late blight caused by Phytophthora infestans (Mont.) de Bary is a serious disease of tomato and potato worldwide. The disease causes severe crop losses in the tomato growing regions of the world. Most of the cultivars grown in the world are reported to be susceptible to late blight. Systemic fungicides have been used widely in the past, but the disease has developed resistance over time. The present study was carried out to minimize fungicide use through integrated pest management. The bio-pesticides Azadirachta indica (Neem), Artemisia vulgaris (Mugwort) and Trichoderma viride were tes

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SINGH, AMANPREET, C. S. AULAKH, RUBALJOT KAUR, and AJAY KUMAR CHOUDHARY. "Effect of foliar application of plant growth regulators on incidence of insect-pests and diseases in autumn planted seed potato (Solanum tuberosum)." Indian Journal of Agricultural Sciences 94, no. 8 (2024): 864–69. http://dx.doi.org/10.56093/ijas.v94i8.134271.

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A field experiment was conducted during 2019–20 and 2020–21 at Punjab Agricultural University, Ludhiana, Punjab to study the effect of foliar application of plant growth regulators on insect-pest and disease incidence in potato (Solanum tuberosum L.) under subtropical conditions. A total of 11 treatments including control were tested in a randomized complete block design (RCBD) with three replications on the potato cv. Kufri Pukhraj. The results indicated that plant growth regulators, like GA3, IBA, NAA, ethrel, jeevamrit and waste decomposer were not producing any significant effect on the in

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Henderson, Donna, Christopher J. Williams, and Jeffrey S. Miller. "Forecasting Late Blight in Potato Crops of Southern Idaho Using Logistic Regression Analysis." Plant Disease 91, no. 8 (2007): 951–56. http://dx.doi.org/10.1094/pdis-91-8-0951.

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Previously published late blight forecasts which predict the threat of disease based on the presence or absence of favorable weather have not been effective in semi-arid potato-producing areas of the Pacific Northwest (Idaho, Oregon, and Washington). Research was conducted to identify weather variables useful for forecasting late blight in southern Idaho. The objectives of this research were to (i) determine if regional weather variables could be related to the occurrence of late blight in southern Idaho, (ii) determine if disease severity (scale of 0 to 4) could be predicted using variables f

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Franceschini, Marston Héracles Domingues, Harm Bartholomeus, Dirk Frederik van Apeldoorn, Juha Suomalainen, and Lammert Kooistra. "Feasibility of Unmanned Aerial Vehicle Optical Imagery for Early Detection and Severity Assessment of Late Blight in Potato." Remote Sensing 11, no. 3 (2019): 224. http://dx.doi.org/10.3390/rs11030224.

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Assessment of disease incidence and severity at farm scale or in agronomic trials is frequently performed based on visual crop inspection, which is a labor intensive task prone to errors associated with its subjectivity. Therefore, alternative methods to relate disease incidence and severity with changes in crop traits are of great interest. Optical imagery in the visible and near-infrared (Vis-NIR) can potentially be used to detect changes in crop traits caused by pathogen development. Also, cameras on-board of Unmanned Aerial Vehicles (UAVs) have flexible data collection capabilities allowin

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Wallis, Anna E., and Kerik D. Cox. "Management of Fire Blight Using Pre-bloom Application of Prohexadione-Calcium." Plant Disease 104, no. 4 (2020): 1048–54. http://dx.doi.org/10.1094/pdis-09-19-1948-re.

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Fire blight, a bacterial disease of rosaceous plants caused by Erwinia amylovora, is one of the most important diseases affecting commercial apple production worldwide. Antibiotics, applied at bloom to protect against blossom infection, are the most effective means of management but raise concern due to the potential for antibiotic resistance in both the pathogen population and nontarget organisms. In addition, most fire blight outbreaks in New York State often emerge in late June to July as shoot blight, calling into question the role of blossom infections and the antibiotic applications made

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Choga, T., E. Ngadze, J. T. Rugare, et al. "Effect of Botanical Extracts on Late Blight (Phytopthora infestans) and Productivity of Tomato (Solanum esculentum)." International Journal of Agronomy 2021 (June 1, 2021): 1–19. http://dx.doi.org/10.1155/2021/8858818.

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Late blight is caused by Phytopthora infestans (Mont.) de Bary which establishes quickly in Solanum esculentum L. (tomato); as a result, it makes the pathogen one of the most devastating plant diseases across the world. The control of late blight is difficult because P. infestans has advanced and complex enzymes and effecter molecules coded by avirulence genes. As such, a study was carried out at the University of Zimbabwe, Department of Plant Production Sciences and Technologies, between August 2018 and May 2019 to evaluate the efficacy of Moringa oleifera Lour. (moringa), Eucalyptus nigra R.

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Dooh, Jules Patrice Ngoh, Frederic Ulrich Boydoul, Abdoul Madjerembe, et al. "Inventory of the potato diseases and impact on growth and yield traits in far North Cameroon." International Journal of Biological and Chemical Sciences 14, no. 8 (2020): 2826–36. http://dx.doi.org/10.4314/ijbcs.v14i8.14.

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Potato (Solanum tuberosum L) production in the Far North Region of Cameroon is faced with scarcity or inequality of rains and with diseases that affect yields. To improve the production a study was conducted in the production area of Mogode subdivision with the objective of identifying potato diseases and pathogens agents. The experimental design was in complete randomized blocks. The plant material used was a local variety of potato (Dosa). Diseases and pathogens have been identified on a base of symptoms and morphological characteristics. The incidence, severity and rainfall were assessed. Y

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Groth, D. E., and J. A. Bond. "Initiation of Rice Sheath Blight Epidemics and Effect of Application Timing of Azoxystrobin on Disease Incidence, Severity, Yield, and Milling Quality." Plant Disease 90, no. 8 (2006): 1073–76. http://dx.doi.org/10.1094/pd-90-1073.

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The lack of sheath blight-resistant cultivars requires rice (Oryza sativa) farmers to use fungicides to control the disease and avoid significant reductions in grain and milling yield. Sheath blight (Rhizoctonia solani) epidemics can begin over a period of weeks during the growing season, and initiation date can have significant effects on crop damage and fungicide application timing. Studies were conducted to determine how different epidemic initiation and azoxystrobin application timings affect disease development, rice yield, and milling quality. Sheath blight epidemics in field plots were

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Bracy, Regina P., H. Hobbs, and D. Dufresne. "CONTROL OF PHYTOPHTHORA BLIGHT IN BELL PEPPER." HortScience 31, no. 5 (1996): 745f—745. http://dx.doi.org/10.21273/hortsci.31.5.745f.

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Field studies were conducted in 1993, 1994, and 1995 to evaluate chemical and biological agents for control of phytophthora blight in bell peppers grown on polyethylene-mulched raised beds. Treatments included Kocide 606 (foliar applied), Ridomil 2E (soil applied), Ridomil 2E (directed spray), Ridomil/Copper 70W (foliar), Ridomil 2E (soil) + Ridomil/Copper 70W (foliar), fluazinam (soil/foliar), and Actinovate bioconcentrate (seedling media applied). The experimental area was inoculated with Phytophthora 2 weeks after transplanting. All plants were rated for disease incidence (number of plants

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Amrate, Pawan K. "Survey and Present Status of Soybean Diseases in Central India." International Journal of Bio-resource and Stress Management 15, May, 5 (2024): 01–10. http://dx.doi.org/10.23910/1.2024.5299.

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The experiment was conducted during kharif (July to September), 2018 and 2019 at J.N.K.V.V., Jabalpur, Madhya Pradesh, India to study the current status of soybean diseases in central Indian conditions. A fixed plot survey of nine soybean varieties was carried out at three different growth stages i.e. seedling stage (V2-V3), early reproductive stage (R2-R4) and late reproductive stage (R5-R7). The study found that soybean varieties were infected with fourteen diseases in the current cultivation scenario. Collar rot (0.0–4.88%), root rot (0.63–4.13%) and soybean mosaic (0.0–8.38%) was initially

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Neupane, S. K., and G. B. K C. "Management of Tomato Diseases in Plastic House at Lamjung." Journal of the Plant Protection Society 7, no. 01 (2022): 123–31. http://dx.doi.org/10.3126/jpps.v7i01.47296.

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An experiment was conducted in plastic houses at three farmers’ field, each farmer as a replication, in three local levels (Sundarbazar, Gaunsahar and Besisahar) in Lamjung district during July to December 2017, to identify and manage major diseases of tomato (variety: Srijana) using chemicals and bio-pesticides. The treatments Bio-cure-B (Pseudomonas fluorescens: bio-fungicide) Bavistin Carbendazim, systemic fungicide) and Dithane M-45 (Mancozeb, contact fungicide) were applied as foliar spray. Control plot was maintained without application of any treatment. Mainly four fungal diseases, earl

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Luo, Y., D. P. Morgan, and T. J. Michailides. "Risk Analysis of Brown Rot Blossom Blight of Prune Caused by Monilinia fructicola." Phytopathology® 91, no. 8 (2001): 759–68. http://dx.doi.org/10.1094/phyto.2001.91.8.759.

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Experiments under controlled environmental conditions were conducted during bloom of prune (Prunus domestica, L.) in 1999 and 2000 to assess the effects of inoculum concentration (IC), wetness duration (WD), temperature, and bloom stages on development of brown rot blossom blight of prunes. Branches from trees of a prune orchard were inoculated with Monilinia fructicola at different bloom stages and incubated at different temperatures with different periods of WD. The proportion of blighted blossoms (PBB) for each inoculated branch was determined. Bloom stage, IC, temperature, and WD significa

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Nuri, H. "Fungal Diseases Tolerance Studies of Potato Genotypes." Bulletin of Science and Practice 11, no. 5 (2025): 312–17. https://doi.org/10.33619/2414-2948/114/40.

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The article is devoted to the study of fungal diseases tolerance of potato samples and discusses the major potato diseases worldwide: late blight, early blight and powdery scab. During the research, the effects of fungal diseases on the quantitative and qualitative characteristics of the plant, some physiological parameters, and pest characteristics were studied. In the studied varieties, the dynamics of specific leaf mass and biomorphological indicators increase in during ontogenesis depend not only on the developmental phase and genotypic characteristics of the plants, but also on the state

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Boziné-Pullai, Krisztina, László Csambalik, Dóra Drexler, et al. "Tomato Landraces Are Competitive with Commercial Varieties in Terms of Tolerance to Plant Pathogens—A Case Study of Hungarian Gene Bank Accessions on Organic Farms." Diversity 13, no. 5 (2021): 195. http://dx.doi.org/10.3390/d13050195.

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Landraces are generally neglected by industrialized agriculture, regardless of their potential to provide valuable genetic material for breeding and to diversifying the available assortment for producers and markets. They may also excel in certain plant protection issues with possible resistance or tolerance to plant pathogens. This is the first report on the disease susceptibility traits of Hungarian on certain indeterminate and determinate tomato gene bank accessions under on-farm organic conditions. For this, a three-year on-farm experiment was conducted in two management systems, open-fiel

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Ding, Shunping, Kiana Meinholz, and Amanda J. Gevens. "Spatiotemporal Distribution of Potato-Associated Alternaria Species in Wisconsin." Plant Disease 105, no. 1 (2021): 149–55. http://dx.doi.org/10.1094/pdis-11-19-2290-re.

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Potato early blight caused by Alternaria solani and potato brown spot caused by Alternaria alternata are two common potato foliar diseases. Fungicide applications in Wisconsin target early blight with the expectation of managing brown spot simultaneously. However, distributions of the two pathogens over time and space have not been previously reported in Wisconsin. In this study, six potato fields in Wisconsin were systematically sampled during 2014 to 2017 to investigate the incidences of both pathogens; incidences of the pathogens were compared by location, timing, and year. Incidence of A.

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Lastochkina, Oksana, Liudmila Pusenkova, Darya Garshina, et al. "Improving the Biocontrol Potential of Endophytic Bacteria Bacillus subtilis with Salicylic Acid against Phytophthora infestans-Caused Postharvest Potato Tuber Late Blight and Impact on Stored Tubers Quality." Horticulturae 8, no. 2 (2022): 117. http://dx.doi.org/10.3390/horticulturae8020117.

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Potato (Solanum tuberosum L.) tubers are a highly important food crop in many countries due to their nutritional value and health-promoting properties. Postharvest disease caused by Phytophthora infestans leads to the significant decay of stored potatoes. The main objective of this study was to evaluate the effects of the endophytic bacteria, Bacillus subtilis (strain 10–4), or its combination with salicylic acid (SA), on some resistance and quality traits of stored Ph. infestans-infected potato tubers. The experiments were conducted using hydroponically grown potato mini-tubers, infected prio

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Agu, CM. "Effect of time of nitrogen application on late blight incidence, severity and potato yield." Tropical Science 44, no. 3 (2004): 116–19. http://dx.doi.org/10.1002/ts.150.

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Dey, Utpal, Shatabhisa Sarkar, Mukesh Sehgal, et al. "Integrating weather indices with field performance of novel fungicides for management of late blight of potato (Phytophthora infestans) in North Eastern Himalayan Region of India." PLOS ONE 19, no. 12 (2024): e0310868. https://doi.org/10.1371/journal.pone.0310868.

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The hemibiotrophic fungus-like oomycete phytopathogen, Phytophthora infestans (Mont.) de Bary, causing late blight disease of potato, is one of the most serious foliar diseases of potato. The pathogen spread very rapidly and can infect at any stage of crop growth.The field experiments were carried out during winter (rabi) season of 2020–21 and winter (rabi) season of 2021–22 to find out the correlation between the disease progress and environmental factors and the effective novel fungicides registered under Central Insecticide Board and Registration Committee (CIB&RC) against P. infestans.

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Seidl Johnson, Anna C., and Amanda J. Gevens. "Investigating the Host Range of the US-22, US-23, and US-24 Clonal Lineages of Phytophthora infestans on Solanaceous Cultivated Plants and Weeds." Plant Disease 98, no. 6 (2014): 754–60. http://dx.doi.org/10.1094/pdis-09-13-0924-re.

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Phytophthora infestans causes late blight, one of the most important diseases of potato and tomato worldwide. Recently in the United States, three newly identified clonal lineages, US-22, US-23, and US-24, have become widespread. While potato and tomato are the most commonly infected solanaceous hosts for P. infestans, new lineages may have a broader or different host range. Under controlled conditions, we determined the host range of isolates representing US-22, US-23, and US-24 genotypes of P. infestans on detached tissues of cultivated solanaceous plants and solanaceous weeds common to the

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Stanosz, G. R., and D. R. Smith. "Evaluation of fungicides for control of Sphaeropsis shoot blight of red pine nursery seedlings." Canadian Journal of Forest Research 26, no. 3 (1996): 492–97. http://dx.doi.org/10.1139/x26-055.

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A nursery study was conducted to evaluate possible chemical alternatives to the fungicide benomyl for control of shoot blight caused by Sphaeropsissapinea (Fr.: Fr.) Dyko & Sutton in Sutton on red pine (Pinusresinosa Ait.). Replicated plots of seedlings in their first or second growing seasons were treated either weekly or biweekly with one of the following materials (or combinations): benomyl; thiophanate-methyl; mancozeb; thiophanate-methyl + mancozeb; chlorothalonil; copper; myclobutanil; myclobutanil + thiophanate-methyl; water (control). Plots were located in three complete blocks at

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Zamyatin, S. A., R. B. Maksimova, and S. A. Maksutkin. "Efficiency of Using ProRostim Biological Preparations on Potatoes." Vestnik of the Russian agricultural science, no. 6 (December 26, 2024): 23–26. https://doi.org/10.31857/s2500208224060062.

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The purpose of the study is to determine the effect of bioorganic preparations ProRostim “Start” and ProRostim “Standard” on the formation of yield and quality of potatoes of the Gala variety in conditions of sod-podzolic soil. The greatest reduction in late blight was with the combined use of ProRostim “Start” when processing tubers and ProRostim “Standard” during the growing season. Three-time application of ProRostim “Standard” during the growing season led to an increase in the incidence of potato late blight. The use of ProRostim “Start” significantly increased the yield of potato tubers

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Kawchuk, L. M., R. J. Howard, R. D. Peters, and K. I. Al-Mughrabi. "First Report of Phytophthora infestans Genotype US23 Causing Late Blight in Canada." Plant Disease 95, no. 7 (2011): 873. http://dx.doi.org/10.1094/pdis-01-11-0054.

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Late blight is caused by the oomycete Phytophthora infestans (Mont.) de Bary and is one of the most devastating diseases of potato and tomato. Late blight occurs in all major potato- and tomato-growing regions of Canada. Its incidence in North America increased during 2009 and 2010 (2). Foliar disease symptoms appeared earlier than usual (June rather than July) and coincided with the identification of several new P. infestans genotypes in the United States, each with unique characteristics. Prior to 2007, isolates collected from potato and tomato crops were mainly US8 or US11 genotypes (1). Ho

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