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Nighttime temperatures moving in wrong direction

University of Arkansas researchers, Extension specialists looking for ways to offset high nighttime temperatures in rice.

Arkansas rice yields have been heading in the wrong direction in recent years, and university rice specialists believe higher nighttime temperatures are playing a role in the downward trend.

“There are a lot of questions about what happened with rice yields this year,” said Jarrod Hardke, rice Extension agronomist with the University of Arkansas. This is what “will drive future research efforts, though we don’t have much to show here today.”

Speaking at the USA Rice Outlook Conference in Memphis, Tenn., Dr. Hardke said Extension specialists and researchers hope to have more to report on the issue of temperatures and rice yields in the near future.”

He also talked about seeding rates and fertility issues in rice, outlining research that indicates proper nitrogen application rates and timing can offset a world of problems with low seeding rates.

Earlier planting is also resulting in growers flooding their fields earlier, a situation that can put pre-flood nitrogen applications into a time when rains are more likely to interfere with the nitrogen timing.

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