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MICHIGAN WEATHER

Heat Waves Continue to Pressure Arkansas Rice Harvest

Heat Waves Continue to Pressure Arkansas Rice Harvest


By Jamie Martin

A series of unusually hot and dry harvest seasons is creating ongoing challenges for Arkansas rice producers. Agricultural researchers say 2026 represents the fourth straight year in which harvest weather has negatively affected rice quality and milling performance.

Arkansas remains the dominant rice-producing state in the United States, generating approximately 45% to 49% of the country's rice crop. Long-grain and medium-grain rice varieties grown in eastern Arkansas play a major role in the state's agricultural economy and in supplying domestic and international markets.

According to the University of Arkansas Division of Agriculture, Arkansas rice growers have faced four consecutive years of hot and dry harvest conditions. Jarrod Hardke, an extension of rice agronomist with the university, said the recurring heat has reduced milling yields and increased concerns about crop quality.

The current concerns did not begin this year. Rice growers experienced moderate challenges in both 2022 and 2023, but weather-related losses became much more significant in 2024. An exceptionally early crop development schedule led to rapid dry-down conditions, while storm activity later affected part of the crop still awaiting harvest.

The following year brought some improvement, although warmer-than-normal temperatures continued to impact milling outcomes. In 2026, however, growers once again encountered sustained periods of record-setting heat. High daytime temperatures combined with unusually warm nights placed additional stress on maturing crops during harvest.

Although Arkansas experienced comparable temperatures decades ago, researchers say several factors now make the situation more difficult. Rice production systems have evolved, and harvest generally begins earlier than it once did. That means crops frequently reach maturity during the hottest part of the late summer.

Historical comparisons with 1980 show similarities in temperature patterns. However, today's earlier harvest schedule increases the likelihood that mature rice will be exposed to prolonged heat. Agricultural experts believe this timing difference helps explain why grain quality problems have become more noticeable.

The repeated occurrence of extreme harvest weather is also raising questions about long-term trends. After four consecutive years of similar conditions, researchers are evaluating whether producers need to adapt to management practices to better protect yield and quality.

One area receiving increased attention is planting timing. Research data from Arkansas trials suggests that planting slightly later may position crops for more favorable harvest conditions. While late March has traditionally been considered an optimal planting period, newer research shows that early and mid-April planting dates can perform equally well.

Trials conducted in northeast Arkansas have produced encouraging yield results from mid-April plantings. Researchers believe wider planting windows could spread harvest activity and reduce exposure to peak heat events.

Growers face practical challenges when considering later planting. Wet spring conditions often reduce available planting days, making it difficult to follow an ideal schedule. Financial considerations and operational demands also influence management decisions throughout the growing season.

“Ideally, we need to go back to a way to spread planting dates out and lean towards later planting,” said Hardke. “But with how tough our spring weather has been, if you don’t take advantage of a planting widow, you don’t know when you’ll be able to plant again.”

Even with those challenges, agricultural specialists continue encouraging growers to spread planting dates and remain flexible. Ongoing research will help determine the most effective approaches for managing heat-related risks.

As Arkansas continues to supply nearly half of all U.S.-grown rice, efforts to improve crop resilience and maintain grain quality will remain a key focus for producers, agronomists, and industry stakeholders in the years ahead.

Photo Credit: University of Arkansas


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