A farmer drives a tractor in his field as he plants potatoes in Haynecourt, as the spread of the coronavirus disease continues, near Cambrai, France April 14, 2020. REUTERS/Pascal Rossignol

A large stock of Potatoes is turned into cattle feed, after sales to restaurants and catering services slumped due to closures resulting from the coronavirus disease (COVID-19) outbreak, at his property in Purmer, Netherlands, April 8, 2020. REUTERS/Eva Plevier

Potatoes from a large stock are pictured as at farmer's property as he can?t sell them to restaurants or catering services that are closed due the coronavirus disease (COVID-19) outbreak, in Purmer, Netherlands, April 3, 2020. REUTERS/Eva Plevier

Potatoes from a large stock are pictured as at farmer's property as he can?t sell them to restaurants or catering services that are closed due the coronavirus disease (COVID-19) outbreak, in Purmer, Netherlands, April 3, 2020. REUTERS/Eva Plevier

Potatoes from a large stock are pictured as at farmer's property as he can’t sell them to restaurants or catering services that are closed due the coronavirus disease (COVID-19) outbreak, in Purmer, Netherlands, April 3, 2020. REUTERS/Eva Plevier

The hands of a farmer are pictured among a large stock of potatoes that he can?t sell to restaurants or catering services, as they are closed due the coronavirus disease (COVID-19) outbreak, at his property in Purmer, Netherlands, April 3, 2020. REUTERS/Eva Plevier

Potatoes are offered on a farmer's market during the outbreak of coronavirus disease (COVID-19) in Hamburg, Germany, March 17, 2020. REUTERS/Fabian Bimmer

Potatoes harvested by Marilee Foster of Foster Farm are seen in Sagaponack, on New York's Long Island, U.S., July 11, 2019. Picture taken July 11, 2019. REUTERS/Lindsay Morris

A vendor picks up potatoes at a temporary tent with government subsidised goods, after consumer prices increase across the country in Cairo, Egypt October 28, 2018. Picture taken October 28, 2018. REUTERS/Mohamed Abd El Ghany

A vendor picks up potatoes at a temporary tent with government subsidised goods, after consumer prices increase across the country, in Cairo, Egypt October 28, 2018. Picture taken October 28, 2018. REUTERS/Mohamed Abd El Ghany

A vendor picks up potatoes at a temporary tent with government subsidised goods, after consumer prices increase across the country in Cairo, Egypt October 28, 2018. REUTERS/Mohamed Abd El Ghany

Potatoes are seen in a field near the village of Krutilovichi, Belarus September 16, 2018. REUTERS/Vasily Fedosenko

Belarusian villagers gather potatoes in a field near the village of Krutilovichi, Belarus September 16, 2018. REUTERS/Vasily Fedosenko

French fries are prepared at 'BurgerArt' restaurant, as drought and heat wave in Europe this summer could cause a shortage of potatoes in Berlin, Germany, July 30, 2018. REUTERS/Fabrizio Bensch

French fires are pictured at 'BurgerArt' restaurant, as drought and heat wave in Europe this summer could cause a shortage of potatoes in Berlin, Germany, July 30, 2018. REUTERS/Fabrizio Bensch

French fries are prepared at 'BurgerArt' restaurant, as drought and heat wave in Europe this summer could cause a shortage of potatoes in Berlin, Germany, July 30, 2018. REUTERS/Fabrizio Bensch

Potatoes are seen inside a planter on a field outside Vaudoy-en-Brie, near Paris, France April 23, 2018. REUTERS/Christian Hartmann

Prices of vegetables are displayed at a store in Mexico City, Mexico, February 22, 2018. REUTERS/Edgard Garrido

A worker puts potatoes affected by pests in a sack as he harvests them at a farm in La Grita, Venezuela January 27, 2018. REUTERS/Carlos Garcia Rawlins SEARCH "LAWLESS ROADS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.?

Potato plants grow at a farm in La Grita, Venezuela January 27, 2018. REUTERS/Carlos Garcia Rawlins SEARCH "LAWLESS ROADS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.?

Vegetables are seen at a shop in Budapest, Hungary, January 30, 2018. REUTERS/Bernadett Szabo

Vegetables are seen at a shop in Budapest, Hungary, January 30, 2018. REUTERS/Bernadett Szabo

A beef burger from "Eish & Malh" (or "Bread and Salt") is seen in the capital Cairo, Egypt September 26, 2017. REUTERS/Amr Abdallah Dalsh

Potatoes, onions, carrots and lemons are on display at a market in Surco district of Lima, Peru, June 1, 2017. REUTERS/Mariana Bazo

Potatoes are displayed at the RHS Chelsea Flower Show in London, Britain May 21, 2017. REUTERS/Neil Hall

Tomatoes, potatoes and other vegetables are seen on a display for sell at a market in Lima, Peru April 28, 2017. REUTERS/Mariana Bazo

A potato flower is pictured on a field of potatoes produced from local seeds by global food and beverage giant PepsiCo International at green fields near the coastal city of Alexandria, Egypt April 20, 2017. Picture taken April 20, 2017. REUTERS/ Sherif Fahmy

Potatoes produced from local seeds by global food and beverage giant PepsiCo International are pictured at a fields near the coastal city of Alexandria, Egypt April 20, 2017. Picture taken April 20, 2017. REUTERS/ Sherif Fahmy

A worker unloads potatoes from his tricycle filled with vegetables as he delivers them to a wet market in Metro Manila, Philippines July 4, 2016. REUTERS/Romeo Ranoco

A man sells potatoes on a street in the rebel held besieged city of Douma, a suburb of Damascus, Syria February 23, 2016. Picture taken February 23, 2016. REUTERS/Bassam Khabieh

Migrants Filmon Abraham, 17, from Eritrea and Sardawalli Zadran, 17, (R) from Afghanistan help to harvest potatoes during a training in Grunertshofen near Fuerstenfeldbruck, Germany September 22, 2015. REUTERS/Michaela Rehle

Migrant Filmon Abraham, 17, from Eritrea helps to harvest potatoes during a training in Grunertshofen near Fuerstenfeldbruck, Germany September 22, 2015. REUTERS/Michaela Rehle

Migrant Sardawalli Zadran, 17, (R) from Afghanistan helps farmer Edigma Holzmueller to harvest potatoes during a training in Grunertshofen near Fuerstenfeldbruck, Germany September 22, 2015. REUTERS/Michaela Rehle

Migrants Filmon Abraham, 17, from Eritrea and Sardawalli Zadran, 17, (R) from Afghanistan help farmer Edigma Holzmueller (C) to harvest potatoes during a training in Grunertshofen near Fuerstenfeldbruck, Germany September 22, 2015. REUTERS/Michaela Rehle

Students weigh sweet potato while working at the Agustin Ferreira farm school near Minas city, in the northeast of Montevideo, September 15, 2015. The school has 12 students aged 4 to 11, with only one teacher, and incorporates activities such as milking a cow, planting vegetables and cooking to improve the education of the children. REUTERS/Andres Stapff

An employee of a local farm has a meal while sitting on sacks of potatoes for sale at a street market on an embankment of the Yenisei River in the Siberian town of Divnogorsk near Krasnoyarsk, Russia, September 10, 2015. REUTERS/Ilya Naymushin

An employee of a local farm loads sacks of potatoes on a customer's trailer at a street market on an embankment of the Yenisei River in the Siberian town of Divnogorsk near Krasnoyarsk, Russia, September 10, 2015. REUTERS/Ilya Naymushin

Customers buy potatoes from a local farm at a street market on an embankment of the Yenisei River in the Siberian town of Divnogorsk near Krasnoyarsk, Russia, September 10, 2015. REUTERS/Ilya Naymushin

Employees of a local farm weigh sacks of potatoes at a street market on an embankment of the Yenisei River in the Siberian town of Divnogorsk near Krasnoyarsk, Russia, September 10, 2015. REUTERS/Ilya Naymushin

Migrant workers from Uzbekistan collect potatoes at a private agrarian field in the village of Beryozovka near Russia's Siberian city of Krasnoyarsk, Russia, September 7, 2015. REUTERS/Ilya Naymushin

A migrant worker from Uzbekistan collects potatoes at a private agrarian field in the village of Beryozovka near Russia's Siberian city of Krasnoyarsk, Russia, September 7, 2015. REUTERS/Ilya Naymushin

Migrant workers from Uzbekistan collect potatoes at a private agrarian field in the village of Beryozovka near Russia's Siberian city of Krasnoyarsk, Russia, September 7, 2015. REUTERS/Ilya Naymushin

A migrant worker from Uzbekistan collects potatoes at a private agrarian field in the village of Beryozovka near Russia's Siberian city of Krasnoyarsk, Russia, September 7, 2015. REUTERS/Ilya Naymushin TPX IMAGES OF THE DAY

Migrant workers from Uzbekistan load sacks of potatoes into a truck at a private agrarian field in the village of Beryozovka near Russia's Siberian city of Krasnoyarsk, Russia, September 7, 2015. REUTERS/Ilya Naymushin

Migrant workers from Uzbekistan collect potatoes at a private agrarian field in the village of Beryozovka near Russia's Siberian city of Krasnoyarsk, Russia, September 7, 2015. REUTERS/Ilya Naymushin

A local resident reads a newspaper next to a vendor selling potatoes and onions at a slum area in Kolkata, India, September 4, 2015. REUTERS/Rupak De Chowdhuri

French farmers harvest potatoes in their field near Molac, central Brittany, France, September 1, 2015. Hundreds of tractors were heading towards Paris for a protest due to take place on Thursday where French farmers will call for more help with low prices and high costs in the European Union's largest agricultural producer country. Picture taken September 1, 2015. REUTERS/Stephane Mahe

A vendor weighs potatoes for a customer (not pictured) in his shop at a vegetable market in Kolkata, India, August 12, 2015. India's retail inflation likely cooled in July as food price rises stayed in check, while factory output grew slightly faster in June, a Reuters poll found this week. REUTERS/Rupak De Chowdhuri

An ultra-Orthodox Jewish boy holds a sack of potatoes during distribution of food to needy families for the upcoming Jewish holiday of Passover in the Jerusalem's Mea Shearim neighbourhood March 31, 2015. Passover commemorates the flight of Jews from Ancient Egypt as described in Exodus. According to the account, the Jews did not have time to prepare leavened bread before fleeing to the Promised Land. REUTERS/Ronen Zvulun TPX IMAGES OF THE DAY

A labourer carries a sack filled with potatoes at a wholesale vegetable market in Kolkata March 12, 2015. India's consumer inflation probably edged up in February for the third straight month, underscoring the risk of a rebound in inflationary pressures if fuel and food prices pick up. REUTERS/Rupak De Chowdhuri (INDIA - Tags: FOOD BUSINESS)

A Palestinian woman collects potatoes during harvest at a field in the West Bank village of Al-Faraa near Jenin February 25, 2015. REUTERS/Abed Omar Qusini (WEST BANK - Tags: AGRICULTURE SOCIETY)

A worker takes a nap inside a shop selling potatoes at a wholesale vegetable market in Delhi February 12, 2015. India's annual consumer inflation INCPIY=ECI accelerated to 5.11 percent in January from 4.28 percent a month ago, after New Delhi shifted to a new base year for calculating prices, government data showed on Thursday. REUTERS/Anindito Mukherjee (INDIA - Tags: FOOD BUSINESS)

A girl eats deep-fried yucas at a McDonald's restaurant in Caracas January 6, 2015. Venezuelan fast-food lovers are mourning the disappearance of McDonald's golden staple: the french fry. A recent shortage at the U.S. fast food chain comes as socialist Venezuela grapples with shortfalls of basic goods ranging from medicines to flour due to strict currency controls that stymie imports. McDonald's restaurants are coping by replacing the spuds with salad or local fare such as fried yuca or "arepa" corn pancakes - but Golden Arches fans are none too happy about the new meal. REUTERS/Jorge Silva (VENEZUELA - Tags: BUSINESS POLITICS FOOD)

Deep-fried yucas are served at a McDonald's restaurant in Caracas January 6, 2015. Venezuelan fast-food lovers are mourning the disappearance of McDonald's golden staple: the french fry. A recent shortage at the U.S. fast food chain comes as socialist Venezuela grapples with shortfalls of basic goods ranging from medicines to flour due to strict currency controls that stymie imports. McDonald's restaurants are coping by replacing the spuds with salad or local fare such as fried yuca or "arepa" corn pancakes - but Golden Arches fans are none too happy about the new meal. REUTERS/Jorge Silva (VENEZUELA - Tags: BUSINESS POLITICS FOOD)

A labourer prepares to unload sacks of potatoes from a truck at a wholesale vegetable and fruit market in New Delhi July 2, 2014. India's new government will seek to raise up to a record $11.7 billion in asset sales in its maiden budget this week, a senior government source said, bolstering state finances and buying time for structural reforms to revive a weak economy. The privatization target could reach 700 billion rupees, almost equal to all proceeds over the last four years, in a budget Prime Minister Narendra Modi hopes will launch the growth and jobs agenda that in May won him India's biggest election mandate in three decades. The budget is due on July 10. Picture taken July 2, 2014. REUTERS/Anindito Mukherjee (INDIA - Tags: BUSINESS FOOD)

A labourer rests on a heap of potatoes at a vegetable and fruit wholesale market in the northern Indian city of Chandigarh June 12, 2014. India's Prime Minister Narendra Modi has listed fighting inflation, particularly food inflation, as his topmost priority. He aims to win the battle by improving supplies of food and clamping down on "hoarders". REUTERS/Ajay Verma (INDIA - Tags: FOOD AGRICULTURE BUSINESS SOCIETY)

A woman buys potatoes from a shop displaying pictures (L to R) of Syria's President Bashar al-Assad and his father late President Hafez al-Assad, in al-Qardahah town, near Latakia city May 26, 2014. Syria is preparing to hold presidential elections on June 3 that looks all but certain to give President Assad a third seven-year term. Al-Qardahah town is the home town of Assad. REUTERS/Khaled al-Hariri (SYRIA - Tags: POLITICS ELECTIONS BUSINESS)

A man carries potatoes in Abrud, central Romania March 24, 2014. Picture taken March 24, 2014. To match story EUROPE-IMMIGRATION/ROMANIA REUTERS/Bogdan Cristel (ROMANIA - Tags: SOCIETY BUSINESS EMPLOYMENT IMMIGRATION)

A man transports sacks of potatoes on a bicycle along the street in Kathmandu March 24, 2014. REUTERS/Navesh Chitrakar (NEPAL - Tags: SOCIETY)

Montana lawyer Christopher Lovell poses for a portrait in the Manhattan borough of New York March 12, 2014. As a young boy working on his uncle's potato farm in rural Montana, little did Christopher Lovell know the company whose name was emblazoned across trains crossing the state would one day make him the nation's most revered - or reviled - commodities lawyer. Years later, as a newly qualified attorney starting out in the cut-throat world of New York litigation in the late 1970s, Lovell led a lawsuit against JR Simplot, a major U.S. agribusiness company which supplied spuds and french fries to McDonald's and other big consumers. To match Profile story COMMODITIES/LAWYER-ANTITRUST Picture taken March 12, 2014. REUTERS/Carlo Allegri (UNITED STATES - Tags: CRIME LAW BUSINESS COMMODITIES)