HUMBOLDT, Iowa — Last year’s commonly used word, “variability,” once again came up in conversations about yield among producers.

Sixth-generation farmer Doug Adams grows 1,400 acres of corn and soybeans mostly on his home field southwest of Humboldt and a smaller field just across the border in Webster County.

Three of Adams’ fields brought in different bushels per acre averages, he said. The primary cause was southern rust. It led to smaller-sized kernels in those fields.

One corn field was disappointing with an average of 150 bu./acre, Adams said.

“We had 180-200 expectations. Small kernels were the cause of it, I think. Some of the earlier harvested corn was better,” he said.

“Beans are turning out better. We are getting mostly mid-50s pretty consistently.”

However, extra moisture

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