Farmers have been questioning how long one should plant corn and beans.

Other concerns include ponding, insect injury, saturated soils and poor stands, Wayne Flanary, University of Missouri regional agronomist in Oregon, said in a news release.

Typically, corn is not recommended to be planted past mid- June because there is considerable yield loss.

Also, corn might fail to dry in the field in fall. Research indicates a lot of yield variability after mid-June.

Soybeans can be planted until early July.

Research for Northwest Missouri indicates 70 percent of yield if the crop is planted by June 30.

Yield losses are less than that of corn at late-planting dates.

Farmers are advised to stay with the typical soybean maturity group they typically plant.

Soybeans bloom according to photoperiod.

It’s not recommended to plant an earlier-maturing variety.

PLANTING SOYBEANS in narrow rows and increase seeding rates is suggested.

As you plant soybeans in June, consider planting in 15-inch rows rather than 30-inch rows.

The narrow-row spacing will utilize plants to make up yield loss due to limited vegetative growth from late planting.

Also, the seeding rates for both 30-inch and 15-inch rows can be the same.

The weather after late planting has a large influence on yield. Good moisture will get the crop started. If it turns dry, yields can be hurt dramatically.

If you have a lot of soybeans to plant, farmers might want to plant, then spray later.

But, they are encouraged to be mindful marestail is very difficult to control when it’s large.

Check fields to determine which weed species are present.

It’s advised to adjust control rates to fit the weed problems.

MOST MARESTAIL is tall and very difficult to control. Increasing glyphosate rates and including a tank-mix partner rated for good control of marestail is recommended.

Remember, tall marestail is outside of typical herbicide-control recommendations.

The spring rains also have left many fields with poor corn stands.

Wet areas, soil insects and seedling blights have affected corn stands.

It’s always a challenge to decide to replant or not.

Because it is getting late, one should stay with the current corn stand.

It is time to consider supplemental nitrogen to corn that is showing nitrogen deficiency.

Saturated wet soils are highest priority. If there is a good stand of corn, adding another 50pounds of nitrogen can provide benefits if the corn is showing nitrogen deficiency.

The corn plant itself is the best indicator if additional nitrogen should be applied. Nitrogen can be top-dressed over standing corn.

Urea has less burn than ammonium nitrate.

Liquid nitrogen should be injected or dribbled between the rows.

Ammonia should be knifed in and sealed so it doesn’t leak out and burn corn leaves.