A local farmer pours Neem leaves concoction into a sprayer in her village in Chikwawa District, Malawi March 19, 2018. Picture taken March 19,2018. REUTERS/Eldson Chagara 

A large crop sprayer is seen at one of the booths from equipment makers at the Agrishow exposition in Ribeirao Preto, Brazil April 30, 2018. Picture taken April 30, 2018. REUTERS/Marcelo Rodrigues Teixeira 

Stan Siewart climbs down from his crop sprayer to attend a meeting in Okotoks December 2, 2015 with provincial Labour Minister Lori Sigurdson and Agriculture Minister Oneil Carlier. Alberta's government will retool a bill that would overhaul workplace standards on farms in Canada's biggest cattle-producing province, its agriculture minister said, after protests by farmers and ranchers. REUTERS/Mike Sturk? 

Farmer Matt Johnson kneels in his popcorn crop fields near a sprayer on his family's farm in Redkey, Indiana June 28, 2012. All across the Midwest, where rows of popcorn normally thrive alongside fields of soybeans, American popcorn farmers have watched in horror as soaring triple-digit temperatures and weeks without rain have left corn stands stunted and crops withered. Picture taken June 28, 2012. REUTERS/Brent Smith (UNITED STATES - Tags: ENVIRONMENT AGRICULTURE BUSINESS) 

Cuban inventor Yolando Perez Paez uses his new makeshift crop spraying tool on a corn field at a farm near the village of Guira de Melenas in the province of Artemisa, some 50 kilometres (31 miles) from Havana April 27, 2011. Perez, an agricultural engineer, designed and assembled the tool by welding metal pieces he found in dumps, attaching tanks for chemicals and a manual pumping system, creating a rapid crop fumigation machine. REUTERS/Desmond Boylan (CUBA - Tags: SOCIETY AGRICULTURE) 

Cuban inventor Yolando Perez Paez pulls his new makeshift crop spraying tool over a road on the way to a field at a farm near the village of Guira de Melenas in the province of Artemisa, some 50 kilometres (31 miles) from Havana April 27, 2011. Perez, an agricultural engineer, designed and assembled the tool by welding metal pieces he found in dumps, attaching tanks for chemicals and a manual pumping system, creating a rapid crop fumigation machine. REUTERS/Desmond Boylan (CUBA - Tags: SOCIETY AGRICULTURE) 

Cuban inventor Yolando Perez Paez uses his new makeshift crop spraying tool on a corn field at a farm near the village of Guira de Melenas in the province of Artemisa, some 50 km (31 miles) from Havana April 27, 2011. Perez, an agricultural engineer, designed and assembled the tool by welding metal pieces he found in dumps, attaching tanks for chemicals and a manual pumping system, creating a rapid crop fumigation machine. REUTERS/Desmond Boylan (CUBA - Tags: SOCIETY AGRICULTURE) 

A pesticide sprayer is seen at a paddy field near Indramayu town in Indonesia's West Java province February 1, 2011. Inflation accelerated more than forecast in Indonesia and South korea in January, and quickened in Thailand, reinforcing expectations of increases in borrowing costs as policymakers struggle with rising food and oil prices. REUTERS/Beawiharta (INDONESIA - Tags: BUSINESS AGRICULTURE) 

A tractor spreads weed-killing substances on a rice field belonging to Riso Scotti processing plant in Vladeni, 170km east of Bucharest in this picture taken July 17, 2008. The rush towards new farming options has attracted foreign cash into Romania's water-rich lowlands, giving the poor Balkan state a chance to become a top producer of rice in Europe in coming years. To match feature ROMANIA-RICE/ REUTERS/Mihai Barbu (ROMANIA) 

Giant planting rigs seed the ground with wheat near Narrabri in eastern Australia June 19, 2008. Australia's wheat farmers are racing to plant their fields after recent rains promised one of the best crops on record after years of drought. REUTERS/Daniel Munoz (AUSTRALIA) 

A farmer sprays his cornfield in Hills, Iowa June 16, 2008. Conditions worsened for corn and soybean crops in the Midwest last week as already water-soaked regions were hit with more rain and flooding, the Agriculture Department said in a report on Monday. REUTERS/Frank Polich (UNITED STATES) 

Paul Griggs, a farmer, plants his winter cereal crop with a direct drill air seeder on his property 425 km (264 miles) northwest of Melbourne May 21, 2008. Giggs and his partner took turns to work 24 hours a day on the 7,000 hectare property for the past three weeks to harvest the crop before winter starts. REUTERS/Mick Tsikas (AUSTRALIA) 

A crop duster plane sprays a field of sunflowers near Winnipeg, Manitoba, August 6, 2007. REUTERS/Shaun Best (CANADA) 

Bill Ela drives a sprayer over a potato crop at the Green Thumb Farms in Fryeburg, Maine, July 14, 2006. Green Thumb Farms is one of a handful of New England farms which have turned to vodka distilling as a more profitable outlet for some of their crops, from potatoes to maple sap and apples. To match feature LIFE VODKA REUTERS/Brian Snyder (UNITED STATES) 

A farmer sprays crops next to a field of oilseed rape crop in Warwickshire in central England, May 11, 2005. REUTERS/Darren Staples DS/TM 

A PZL Dromader crop-sprayer flies over central Belgrade to spray the city August 3. An all-time record of summer rains in Belgrade have bred millions of mosquitoes, but due to almost three months of NATO bombing, agriculture aviation was not able to tackle the nuisance this spring.
**DIGITAL IMAGE** 

A PZL Dromader crop-sprayer flies over central Belgrade to spray the city August 3. An all-time record of summer rains in Belgrade have bred millions of mosquitoes, but due to almost three months of NATO bombing, agriculture aviation was not able to tackle the nuisance this spring.

IM/AA