On Tuesday, corn futures on the Chicago Board of Trade fell by 1.3%.
Investors adjusted their positions ahead of a crucial report from the U.S. Department of Agriculture, while easing tensions between the U.S. and Iran continued to exert pressure on agricultural markets.
The U.S. Department of Agriculture was scheduled to release its quarterly grain stocks and planted acreage reports on Tuesday.
These reports are considered the second official revision of the year for corn and soybean planting areas, providing data that is closer to actual planting conditions than the March Prospective Plantings report.
A media survey indicated that analysts expect U.S. corn planted acreage for the 2026 season to be 94.992 million acres, slightly below the USDA's March estimate of 95.338 million acres.
Regarding stocks, the market anticipates that corn inventories will show a year-on-year increase.
Traders noted that market capital is largely in a wait-and-see mode before the report's release.
Furthermore, the first notice day for the July futures contract also fell on Tuesday, which further constrained actual trading activity in the market.
However, weather factors provided some support for corn prices.
Weather forecasts indicate extreme heat is expected in the eastern Corn Belt this week, with temperatures in some areas potentially exceeding 100 degrees Fahrenheit.
Corn crops are in the critical pollination stage, and the high temperatures pose a potential threat to yield prospects.
Analysts also pointed out that the region is still expected to receive rainfall, and the heat could help dry out overly wet soils in the eastern Corn Belt.
Currently, approximately 67% of the corn crop is rated in good to excellent condition.
The market is still assessing the actual impact of the high-temperature weather.
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