Missouri and Kansas farmers are having the worst time in planting soybeans, of the top 18 soybeans producing states in the nation, based on a close look at the USDA’s most recent planting and crop condition report.

In general, both states are not faring well for soybean planting and the corn crop is not growing as well in these two states compared to most other states. 

“Missouri farmers face a triple whammy of prevented corn planting, delayed soybean planting, and poor crop vigor because of cloudy skies and wet soil,” said University of Missouri Extension soybean specialist Bill Wiebold.

Heavy rains have hit the two states throughout much of the late spring planting season—although cloud bursts have been spotty on many of those days. The weather has been such that once soil is drying out from one rain another one has occurred.

“The weather forecast doesn’t bode well for Missouri farmers,” Wiebold said on June 16. As much as five inches of rain are predicted for the next several days. Then Tropical Storm Bill will move from Texas into Missouri with additional heavy precipitation.”

Eastern Kansas is anticipated to be hit with some rain, too, whether it is as much as Missouri won’t matter as much as the fact that it will probably be enough to limit soybean planting.

As of June 14, only 42 percent of intended soybean acres were planted in Missouri. Soybean planting in Kansas was 57 percent. Farmers to the north and east of Missouri have planted more than 90 percent of their planned acres.

“The eastern side of the state (Missouri) had a few—very few—more days of planting opportunity than the western side,” Wiebold said. That western side of the state borders with Kansas where planting opportunities were the same.

Because of the weather, even soybeans in the ground haven’t been quick to emerge.

Undoubtedly soybean yield potential has been reduced for the area. Wiebold conducted 12 years of experiments in central Missouri that show how yield correlates to planting date. “Soybean yield is highly related to weather conditions during August, and yield variability among years for June-planted soybean was large,” he said.

Average yield for soybean plantings in the third week of June is at least 25 percent less than soybean plantings in early May for Missouri, and this would be similar in eastern Kansas where most of the soybeans are planted.