(Radio Iowa) – Iowa’s spring planting season is wrapping up, with the majority of corn and soybean fields statewide now fully planted. Angie Rieck Hinz, a field agronomist at the Iowa State University Extension, says weather conditions have been all over the map the past few months. “It was warm when we started and then it turned off a little wet, and then it turned off a little cool, and then it got really windy, and then it warmed up, and then it got cool again,” Rieck Hinz says. “It really was a lot of stress on those earlier planted crops.” Those temperature variations, she says, can really do a number on newly planted crops.

“We were waffling between warm in the 90-degree temperatures and then back in the upper 40s and lower 50s and that causes a lot of stress on those emerged plants,” she says, “but in this last week, with a little bit of rain and now some sun and heat, the corn and soybeans really seem to be exploding in growth.” Many parts of the state have seen healthy rains in recent days, though most areas still lack moisture and could use another inch or two. Plus, she says weeds could be starting to cause a problem.

“If you did an early post-application of herbicide, I would be scouting those fields again,” Rieck Hinz says. “We really struggled with our pre-emerged herbicides this year to work because it was so dry in some places. So it might be the year where we need two post applications of herbicide to keep those weeds down.”

The latest Iowa Drought Monitor map shows about 28-percent of the state has -no- sign of drought, with almost 60-percent of Iowa in the “abnormally dry” category, and about 13-percent considered in moderate drought.