Ukraine’s maize production will jump this year to just over 30 million tonnes, supported by record yields after crops benefitted from good growing weather. kraine, one of the world’s largest grain growers and exporters, is expected to produce 30.28 million tonnes of maize (corn) this year, up 23 percent from 24.67 million in 2017 and 12 percent above the average of the past five years. The bumper volume would reflect a projected record yield of 6.69 tonnes per hectare, up from 5.51 tonnes per hectare last year.