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Potato blight

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Late blight is a serious and widespread disease of the Solanaceae family. It is often called potato blight or tomato blight as it particularly affects these crops, and can destroy a tomato or potato crop in as little as 10 days. However the causal pathogen is the same. This destructive fungal disease is caused by spores of Phytophthora infestans which are spread on the wind and may also. Great Famine, also called Irish Potato Famine, Great Irish Famine, or Famine of 1845-49, famine that occurred in Ireland in 1845-49 when the potato crop failed in successive years. The crop failures were caused by late blight, a disease that destroys both the leaves and the edible roots, or tubers, of the potato plant The potato blight returned to Europe in 1879, but by that point the Land War, described as one of the largest agrarian movements to take place in 19th-century Europe, had begun in Ireland. The movement, organized by the Land League , continued the political campaign for the Three Fs , issued in 1850 by the Tenant Right League during the Great Famine

The Irish Potato Famine, also known as the Great Hunger, began in 1845 when a fungus-like organism called Phytophthora infestans (or P. infestans) spread rapidly throughout Ireland. Before it. If your potato plants start to exhibit small, irregular dark brown spots on the lowest or oldest leaves, they may be afflicted with early blight of potatoes. What is potato early blight? Read on to learn how to identify potatoes with early blight and about potato early blight treatment. What is Potato Early Blight Potato Blight thrives in warm and damp conditions. When these conditions occur together for a couple of days or more then infection by potato blight is a distinct possibility. There are two standards which are used to determine if the conditions are correct for a blight infection, the Beaumont Period and the Smith Period. Both have relatively similar criteria, essentially warm and damp weather. Potato Blight. Potato blight (or potato late blight) is caused by a mildewlike fungus called Phytophthora infestans that can infect the potato foliage and its tubers. Although P. infestans is best known as a pathogen of the potato, this fungus also attacks the tomato and a number of other plants belonging to the family Solanaceae. History. This disease first came to the attention of the. Potato Blight. We have been contacted by an allotment holder in Brighton who is concerned about the threat of potato blight in 2014. He has reported to us that there is almost certainly an advance case of potato blight on his allotment site and they have had it for the last 2 weeks to his certain knowledge. Crops from last year were not harvested but allowed to grow 'en mass' and quickly.

Potato blight is caused by a fungus, of which there are two different types - Alternaria solani in Early potato blight and Phytophthora infestans in Late potato blight. For a gardener, there is very little that is more heartbreaking than pouring time, energy and money into a crop only for it to fail Late blight, also called potato blight, disease of potato and tomato plants that is caused by the water mold Phytophthora infestans. The disease occurs in humid regions with temperatures ranging between 4 and 29 °C (40 and 80 °F). Hot dry weather checks its spread. Potato or tomato plants that are infected may rot within two weeks. The Great Famine in Ireland in the mid-19th century was. Potato blight is a term that can refer to one of two potato diseases. Late blight is caused by the Oomycete Phytophthora infestans, an organism that used to be considered a fungus, but is now thought to be related to algae.It is a notorious plant disease, being responsible for the Irish potato famine that led to large-scale death in the 1840s

Viele übersetzte Beispielsätze mit a potato blight - Deutsch-Englisch Wörterbuch und Suchmaschine für Millionen von Deutsch-Übersetzungen POTATO GROWERS across the UK should be on high alert for potato blight, following a period of warm, wet weather. Rain showers, coupled with warming temperatures have heightened the threat of the major potato disease across many of the UK's key growing regions. Last summer saw disease levels peak following a period of heavy downpours, which put a stop to spraying programmes. Although warning. Engraving depicting potato blight (Phytophora Infestans). Leaves of the potato plant rot as an effect of potato blight, a fungal infection spread by aphids. It was not until the 1890s that the nature of the disease and its vector was properly understood. Dated 19th centur dict.cc | Übersetzungen für 'potato blight' im Englisch-Deutsch-Wörterbuch, mit echten Sprachaufnahmen, Illustrationen, Beugungsformen,. Potato blight definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now

Phytophthora infestans - Wikipedi

Late blight caused by the oomycete fungus Phytophthora infestans (Pi) is the most serious obstacle to potato (Solanum tuberosum) production in the world.A super race isolate, CN152, which was identified from Sichuan Province, China, could overcome nearly all known late blight resistance genes and caused serious damage in China Potato blight first shows itself as brownish-black spots on leaves, but before long the potato foliage can completely collapse and the potatoes themselves will. Potato Blight can be spread through the air and in water. Wind carries spores of the disease from plant to plant. Water can wash the spores into the soil, where it can infect young tubers. Potato Blight is a destructive disease. It can wipe out a full crop of potatoes overnight. In a sack or a crate, it will travel from potato to potato, infecting them all. The fungus is generally killed by. Alas, potato blight is air-borne, so while crop rotation will help control other diseases, it won't make any difference for potato blight. But that doesn't mean cropr rotation isn't essential - it is! Ben Vanheems on Thursday 8 August 2013 Ah ha! I didn't know that. Thanks for the information, ya learn something new every day! Marsha on Thursday 8 August 2013 I disagree about using.

Potato blight and how to beat it / RHS Gardenin

Potato Blight Causes, Identification, Treatment Potato Blight

How to Prevent Terrible Potato Blight with This Easy to

Potato blight can devastate the entire crop and contaminate the soil. History and Potato Blight. Potato blight was a major factor in the emigration of many Irish and Scots to America in the 1840s. In Ireland, especially, the famine resulting from the blight was thought to have killed more than a million people who were dependent on the crop. One reason the famine was so destructive was that. Although potato blight is unlikely to have such devastating effects today, it can still cause significant economic loss. Following the initial outbreak of the disease in 1845 there was a major search to establish the underlying cause. This led to a certain level of scientific controversy; one group maintained that it was due to natural causes such as the weather, while the others took the. Potato blight: a nasty disease that can devastate a crop within days, turning your fine potatoes into black mush. This fungal disease is becoming increasingly common in UK gardens and allotments. This is partly due to damp summers that are becoming all too common in recent years. Blight can infect both the tuber, the leaves and stems of potato plants. Symptoms of potato blight. The first signs. How Potato Blight in Ireland contributed to the Great Famine 1844 to 1849. The Famine 1: Potato Blight: Main Menu \ History Menu \ The Great Famine \ In September 1845 a strange disease struck the potatoes as they grew in fields across Ireland. Many of the potatoes were found to have gone black and rotten and their leaves had withered. In the harvest of 1845, between one-third and half of the. Potato blight resistance gene. A new blight-resistant gene introduced to the Maris Piper potato offers the promise of furthering its crop strength, and even the possibility of avoiding the use of chemical fungicides in its cultivation altogether. Technology becomes the blight of the Irish Potato Famine pathogen ; New Quality Food and Loss network to focus on the potato; Contact. UK Research.

Potato Blight Diseases - Learn How To Identify Potato Blight

Blight (Phytopthora infestans) is a virulent fungal pathogen that is capable of wiping out potato crops very quickly. Most of us who have grown potatoes have seen it in our crops. The best organic method of managing this disease is to take a range of preventative measures which reduce its chances of breaking out Late blight remains the single most important potato disease, costing the industry an estimated £50M annually in crop protection chemicals in a typical blight pressure season Late blight caused the Irish Potato famine of the 19th Century. It results from infection by the fungal-like mould Phytophthora infestans, causing losses of $6B/ year for potato and tomato production. Potato is the fourth most important crop in the world and widely grown in Europe, USA, South America, Canada, China, India and Africa USABlight | A National Project on Tomato & Potato Late Blight. Home; About Late Blight. What is late blight? Identifying the Pathogen; Storymap; Recent US Genotypes; News; Outbreak Map. Current Map; 2019 Map; 2018 Map; 2017 Map; 2016 Map; 2015 Map; 2014 Map; 2013 Map; 2012 Map; 2011 Map; Report Late Blight. First-Time Registration; Report Late Blight ; Alerts System; Track your sample; Sample. Potato Blight. on August 24, 2020; in Uncategorized; 3 Comments; The past few weeks have been hot and humid. This means not just uncomfortable sleeping but it is perfect for fungal diseases. I have never had such bad blackspot on the roses - though I think the lack of foliage is partly down to the awful winds too - and soft fruit is going mouldy on the plants. But, of course, wet and warm.

Homemade Potato Blight Spray: make your own

  1. Potato blight definition is - any of several destructive fungus diseases of the potato
  2. potato blight Kartoffelfäule {f}agr. tree blight Baumfraß {m}biol. urban blight [Am.] Verfall {m} der Innenstädteurban a blight on the nation eine Schande {f} für die Nation (potato) late blight [caused by Phytophthora infestans] Kraut- und Knollenfäule {f} (der Kartoffel)agr.bot.T (tomato) late blight [caused by Phytophthora infestans
  3. Got potato problems? At Planet Natural we offer a large selection of natural disease fighters that are guaranteed SAFE and effective. We only carry the best! If you notice dark blemishes on mature leaves, often with target-like rings, your potatoes are probably suffering from one of the most common diseases, early blight.If left untreated, this fungus will result in collar rot, essentially.
  4. As a part of the research into blight populations, the AHDB Potatoes Fight against Blight service has been reporting blight alerts for more than 10 years. Fill out the fields below to see a report summary of areas affected in the UK. Changing the date range will allow you to see when blight was reported across the season. the 'End Date' chooses the weather to display. Click here to go to the.
  5. Tomato blight, a fungal infection called Phytophthora infestans, spreads by wind and water-splash.It also attacks potatoes and is triggered by warm, wet conditions, making outdoor tomatoes more susceptible than those in a greenhouse. The crop is quickly ruined and even if it's immediately picked you can't stop the tomatoes rotting
  6. Potato blight, a fungal disease caused by the pathogens Phytophthora infestans and Alternaria solani, results in shriveled, brown leaves and lesions on the plant stems. In its advanced stages, the.
File:Phytophthora infestans potato 'Doré', aardappelziekte

Didier Andrivon from INRA delves into the disease that once killed 1.5 million individuals in Ireland: Potato late blight, also known as Phytophthora Infestans. It would be easy to think that a disease peaking over one hundred years ago is no longer a problem, but potato late blight continues to evolve and emerge in new places - similarly to the insidious reach of anti-microbial resistance Potato late blight, caused by the oomycete pathogen Phytophthora infestans, continues to be the most economically destructive disease of global potato crops. The primary potato disease remains Phytophthora infestans (late blight), it is responsible for €1,000,000,000 of annual losses in the EU alone. In Ireland alone it is estimated that €5 million is spent annually on fungicides to.

Potato and tomato blight / RHS Gardenin

  1. Potato blight definition: a devastating disease of potatoes produced by the oomycete Phytophthora infestans which... | Meaning, pronunciation, translations and example
  2. Potato Plants Affected by Late Blight, with New Resistant Cisgenic Victoria Variety Potato in Background This would mean a lot more money to smallholders in Africa who can barely afford to send their children to school, purchase a nutritionally balanced diet, and access medical care, Dr. Marc Ghislain says
  3. 'A wild relative of the potato was found in Peru, and when it was hybridized with the standard crop plant a variety was obtained that was resistant to potato blight.' 'In 1844, a new form of potato blight was identified in America.
  4. A hybrid potato that is resistant to the crop-destroying fungus known as blight is being trailed as a potential saviour of some of the country's best-known varieties of spud
  5. Potato late blight. Scientific Name. Phytophthora infestans. Distribution. Worldwide. Wherever potatoes are grown. Asia, North, South and Central America, the Caribbean, Europe, Oceania. It is recorded on potato from American Samoa, Australia, Fiji, New Caledonia, New Zealand, Papua New Guinea. It is recorded on Solanaceae from American Samoa. Hosts. Potato, tomato (see Fact Sheet no. 261.
  6. This video clip was taken from Potato Late Blight - The Disease Cycle of Phytophthora infestans. To order the full video, go to http://my.apsnet.org/ItemDeta..
  7. Potato and tomato blights in Europe: Multi-actor research is crucial for sustainable control; Late blight and organic crops: Solving the arduous copper equation; Fungicide evaluation to rate the efficacy to control earlyblight for the EuroBlight table Results 2015-2016 here. Fungicide evaluation to rate efficacy to control leaf late blight for the EuroBlight table. Results 2006 - 2018 here.

How to stop potato blight - Thompson and Morga

  1. The humid weather over the last week has been ideal for potato blight to establish in the crop, with Met Eireann issuing a blight warning. Gareth Austin, a horticulturist from Co. Donegal, says that late blight in potatoes is a challenging subject for any home and professional grower, and will require a multi-pronged approach
  2. e of 1845 to 1849 during which over a million people died and a similar number emigrated to escape the devastation. A variety called Lumper, due to it looking.
  3. Late blight, caused by the oomycete pathogen Phytophthora infestans , is the most devastating potato disease in the world. Control of late blight in the United States and other developed countries relies extensively on fungicide application. We previously demonstrated that the wild diploid potato species Solanum bulbocastanum is highly resistant to all known races of P. infestans

Great Famine Definition, History, Causes, & Facts

  1. e, and many Irish people emigrated to the.
  2. al masculina: Unidad léxica estable formada de dos o más palabras que funciona como sustantivo masculino (ojo de buey, agua mala). The potato blight in Ireland in the 1840s caused a massive fa
  3. es and destroys 5.
  4. potato blight translation in English - German Reverso dictionary, see also 'potato',potato beetle',potato bug',couch potato', examples, definition, conjugatio
  5. eral N was similar in all treatments except for D and O in 1999, when an early infestation by potato late blight resulted in early senescence and thus in a reduced N uptake. After harvest N

If you're like most people, the biggest potato crisis you ever face is the common lunchtime question: Do you want fries or chips with that? Potato farmers have much bigger worries. A serious disease called blight threatens potatoes all over the world. Millions of people starved when the disease destroyed potato crops in Ireland and [ Engraving depicting potato blight (Phytophora Infestans). Potato plant is suffering from 'gangrene' an effect of potato blight, a fungal infection spread by aphids. It was not until the 1890s that the nature of the disease and its vector was properly understood. Dated 19th century. (Photo by: Universal History Archive/Universal Images Group via. The development the potato blight application increases convenience and information available to assist with farmer's decisions. It allows each potato field to have alerts when severity values are close to threshold as well as provide messages with custom information, including local late blight outbreaks to each user. This will increase the accuracy of predicting late blight and early. potato blight. Kartoffelfäule f. to blight sb's chances. jds Chancen zunichtemachen. to cast a blight on sth. einen Schatten auf etw Akk werfen übtr. Beispiele aus dem Internet (nicht von der PONS Redaktion geprüft) 2. Holy Trinity Column Plague epidemics were the blight of the Middle Ages. The harshest outbreak hit the town in 1582. chchp.cz. Mit etwas Glück kann man von dem Turmumgang.

Great Famine (Ireland) - Wikipedi

Potato blight is spread in warm, humid conditions and there generally needs to be a 12-hour period with temperatures above 10 degrees and humidity higher than 90%. Blight is a fungus that causes. Potato blight is a disease caused by the pathogen Phytophthora infestans. Blight is typically divided into two categories: early blight and late blight. Early blight can happen every year, and it. Introduction to the Late Blight of Potato: Late blight is a serious fungal disease of potatoes. It is worldwide in its distribution. It occurs in potato growing areas of the world. Winter is the main potato growing season in India. It is followed by hot summer months in the plains. The drought and high temperature kill the fungus in the soil. ADVERTISEMENTS: The late blight epidemics are thus. Image caption Potato blight is a major issue for farmers . The disease is constantly evolving, so potato varieties that were previously resistant may not be in years to come. The Royal Botanic.

Diseases - Vegetables | University of Maryland Extension

GM potato is 'blight resistant' Potato crops were wiped out by the disease in 1845. Scientists have discovered a gene which protects potatoes from blight, a disease which led to crop failure and famine in 19th Century Ireland. The gene was taken from a species of wild Mexican potato which has evolved a natural resistance to late blight. Inserted into commercially grown potatoes, it effectively. Potato blight is the so-called fungal disease which destroyed the Irish potatoes in 1845. Because there are other blights of potatoes, this one is sometimes called late blight of potato. Potato blight Symptom of late blight on the underside of a potato leaf Scientific classification; Domain: Eukaryota. Kingdom: Chromalveolata . Phylum: Heterokontophyta. Class: Oomycota. Order: Peronosporales.

Irish Potato Famine - Topics on Newspapers

Potato growers across the UK should be on high alert for potato blight, following a period of warm, wet weather. Rain showers, coupled with warming temperatures have heightened the threat of the major potato disease across many of the UK's key growing regions Southern blight, also known as sclerotial blight, southern stem rot, and bed rot is a foliar disease of sweetpotato, affecting plants in greenhouse and field beds. Symptoms are usually observed around isolated circular hot spots which can spread over time, and appear after sprouts have emerged from the soil Late blight of potato and tomato. The Plant Health Instructor. American Phytopathological Society. doi: 10.1094/PHI-I-2000-0724-01. The late blight pathogen is favored by free moisture and cool to moderate temperatures. Night temperatures of 50 to 60 F and day temperatures of 60 to 70 F are most favorable for disease development. Free water from rain, dew and overhead irrigation sprinkler.

Irish Potato Famine - Timeline, Causes & Facts - HISTOR

British scientists have developed genetically modified potatoes that are resistant to the vegetable's biggest threat - blight Potato farmers will have to rethink their blight programmes this season after the dramatic increase in a new strain of blight last year that is resistant to a key fungicide Late blight is a fungus-like disease that can impact both tomatoes and potatoes. While it typically occurs late in the season (as its name implies), it can strike at any time. Not only does the pathogen destroy the fruits of the plant it infects, but it can also spread very quickly and widely. Late blight can overwinter, meaning that even after a cold frost it can still return the following. Figure 3.—^Early blight lesions (cut-tuber view) 23 Figure 4.—Wilt caused by Fusarium oxysporum and F, solani var. eumartii 23 Figure 5.—Fusarium tuber rot 24 Figure 6.—Fusarium seed-piece decay caused by F. sambucinum and F. caeruleum 24 Figure 7.—A, Potato leaf infected with late blight; 5, tuber showing symptoms of late

What Is Potato Early Blight: Learn How To Manage Early

The blight presumably jumped the Atlantic aboard ship in 1845, and rapidly infested European fields. In damp conditions, Fry says, a single infected potato would be enough to spread the deadly disease. In 1845, late blight obliterated one-quarter to one-third of the Irish potato crop Late blight of potato was responsible for the Irish potato famine of the late 1840s. Host and pathogen. Late blight infects leaves, stems and fruit. Late blight is caused by the oomycete Phytophthora infestans. Oomycetes are fungus-like organisms also called water molds, but they are not true fungi. There are many different strains of P. infestans. These are called clonal lineages and. Potato blight may refer to either late blight (Phytophthora infestans) or early blight (Alternaria solani). Both of these blights cause serious potato disease. The organisms can also infect tomatoes and some other members of the solanaceae family. The early stages of blight are easily missed, and not all plants are affected at once. Symptoms include the appearance of dark blotches on leaf tips. Potato late blight, thus, continues to be the main potato constraint worldwide despite huge investments in its management. The growing intercontinental trade in potato is also increasing the risk of worldwide dissemination of dominant P. infestans strains. The threat from the disease will without doubt continue in the future. Fortunately, encouraging solutions to improve its management are. Potato blight or late blight disease is caused by a fungus-like organism Phytophthora Infestans. It spreads rapidly in warm humid weather in the foliage of potatoes and outdoor tomatoes causing collapse and decay of the foliage and infection of the potatoes or tomatoes. Late blight disease can also infect potato tubers causing rapid tuber rot making to unfit for storage or consumption

Q What is potato blight?. A Potato blight (Phytophthora infestans) or 'late blight' is a devastating fungus disease that spreads rapidly in wet weather.Like a mildew disease, to which it is related, it attacks the foliage, but can get washed down to damage the tubers. Blight also attacks tomatoes, and has been recorded on aubergines.Related plants, such as peppers, seem immune Late blight of potatoes and tomatoes, the disease that was responsible for the Irish potato famine in the mid-nineteenth century, is caused by the fungus-like oomycete pathogen Phytophthora infestans.It can infect and destroy the leaves, stems, fruits, and tubers of potato and tomato plants

How to identify, avoid and treat Potato Blight

Late blight in potato is a plant disease caused by the pathogenic fungus, Phytophthora infestans.It is a potentially devastating disease that primarily found in potatoes but can also be seen in the members of the Solanaceae family, including tomatoes, petunias and hairy nightshade etc. Phytophthora infestans is a plant pathogen, which can severely affect the yield and quality of potatoes by. Potato blight was a major cause of the mid-19th Century Irish famine, when starvation killed a million people and drove a million more to emigrate. The water mould Phytophthora infestans still destroys crops worldwide worth $6bn each year. In 2003 it wiped out the entire crop of Papua New Guinea. Scientists hope the genome, published in the journal Nature, will help in developing new defences. Irish American group commemorates 175th anniversary of first report of Ireland's potato blight. BY: Jack Beresford September 14, 2020. shares 189. Share this article: AMERICA'S OLDEST and largest Irish Catholic Organisation has commemorated the 175th anniversary of first report of Ireland's potato blight. September 13, 1845, marked the date when British publication The Gardner's. Potato late blight is caused by the oomycete pathogen Phytophthora infestans (P. infestans). The pathogen is best known for causing the devastating Irish potato famine of the 1840s, which killed over a million people, and caused another million to leave the country. Host Crops and Plants Skip to Host Crops and Plants. Solanaceous plants such as potato, tomato, petunia and nightshade, but the. Potato late blight's impact on humankind is rivaled by few other plant diseases. The Spanish introduced Europeans to the South American staple crop potato shortly after their conquest of the New World, but for three centuries Europe stayed free of P. infestans, the causal agent of late blight.In 1845, the oomycete P. infestans finally reached Europe, spreading rapidly from Belgium to other.

Growing Potatoes: A Beginner's Guide to Planting Big

Early blight is characterized by concentric rings on lower leaves, which eventually yellow and drop. Late blight displays blue-gray spots, browning and dropped leaves and slick brown spots on fruit. Although the diseases are caused by different spores, the end result is the same. For tomato and potato growers, blight can be devastating Late blight of potatoes remains one of the most destructive and economically draining threats to your potato crop. Caused by Phytophthora infestans, late blight can reduce potato yields by 20 to 40 percent. The global economic cost of the disease exceeds $5 billion annually.* Black or brown lesions are the first visible symptoms of potato late. Potato Colour (76) Flesh Colour (76) Blight Resistant (15) Potato Families (51) Organic (29) Ware - Eating Potatoes (2) All Potatoes (76) Gifts (1) Growing for the Kitchen. All rounder Baking Boiling Chips Crisps Mash Roast Salad Wedge. Seed Potatoes. Maturity (76) First Early (16) Second Early (18) Early Main Crop (13) Main Crop (30) Potato Type (76) Floury (40) Smooth (14) Waxy (22) Potato. Late blight of tomato and potato is a potentially destructive fungal disease in Maryland home gardens. This is the same disease that caused the Irish potato famine in the 1840s. Late blight can occur at any time during the growing season when the weather is cool and wet. The disease is slowed down by a return to hot, dry weather. Gardeners in cooler areas of Maryland may see late blight.

Hi All I am sooooo upset - all my potatoes (Maris Piper) have potato blight I grew them all in sacks so the blight won't have spread (unless by air). I asked about it today at the garden centre and the information desk told me to take everything (potatoes, compost and potato bags) to the dump because they would all be infected Potato blight is a difficult disease and can be very time-consuming to control, so prevention will always be better than cure. One option, which will help to avoid any blight infection is to grow early and second early potatoes. Blight is more often associated with main crop potatoes, which take longer to mature and are therefore at the mercy of any wet summer periods, in which blight. Click here to see agroecological ways of managing potato blight on your farm. There were four main outcomes: Setting up field labs. With a strong appetite from growers to work on potential alternatives, be that systems or treatments, discussions opened on setting up a range of field labs. The results of these robust trials would help inform and.

Late Blight Tomato Disease - Late Blight Symptoms AndBuying boxwoods? Be on the lookout for blight - ChicagoHow to Grow and Care Potatoes at Home - Potato Plant

Die englische Herrschaft etablierte in Irland die Anglikanische Kirche. Katholiken wurden unterdrückt, die keltisch-irische Kultur in die Opposition gezwungen It's around this time of year that gardeners start to look forward to a bumper crop of potatoes but for those who have grown them before there is always the worry that the harvest will be spoiled by blight. Probably the most common plant disease, blight can wreck whole crops in a matter of a few weeks, as it did so devastatingly during the Irish potato famine in the 1840s where 1 million.

Pythium diseases (Pythium spp

Leaf infected with potato blight, coloured scanning electron micrograph (SEM). Lower surface of a leaf from a potato plant infected with late blight, showing stomata (pores, circular) and blight hyphae (thin strands). Late blight is caused by the water mould Phytophthora infestans. The spores of the mould lie dormant on tubers under the soil during the winter, but spread rapidly in warmer damp. Late blight or Phytophthora blight (Phytophtora infestans f.sp. infestans) causes water-soaked lesions with vague borders and white fluffy fungal growth on the leaves. The centre is grey-brown with a light-green edge. On the stem, elongated brown lesions occur, usually circling the stem. On potato tubers, blueish lesions appear, that can be seen through the skin Late blight is a disease with the biggest economic impact on potato cultivation worldwide. Pyramiding of the resistance genes originating from potato wild relatives is a breeding strategy that has a potential to produce potato cultivars durably resistant to late blight. Growing such cultivars would allow limiting the intensive chemical control of the disease

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