(NDAgConnection.com) – Brazil has been slated for a record corn harvest this year after drought ravaged the country’s soybeans just months ago and its corn a year ago, but dryness once again threatens to curb potential on its second crop.

Reuters reports that Brazil is typically the second-largest corn exporter behind the United States, and those supplies primarily stem from its second crop that accounts for three-quarters of the full-year output.

Four states are responsible for at least 87% of second corn production, and top grower Mato Grosso just experienced one of its driest Aprils on record. Planting there was quicker than normal this year with close to 90% done by the end of February.

In Mato Grosso’s crop-heavy north region, April rains were the second-driest in more than two decades behind 2016. Coupled with hot temperatures, second corn yields dropped by 30% in 2016, but late planting had also been an issue.

In the last couple of decades, Mato Grosso’s corn yields were good in only one of six years where April rainfall was notably low, and that was based on abundant May moisture. Showers could arrive early next week, though weather models are mixed on those chances.

May rainfall is only one-third that of April due to Mato Grosso’s seasonal patterns, though if the dry period starts earlier than normal, ample rains are less likely to return. The center-west state accounts for about 45% of the country’s second corn crop.