Agronomy Notebook

Plan now for 2015 weed control

As herbicide resistant weeds become more prevalent across the Eastern Corn Belt, university weed experts and agronomists continue to advocate the importance of fall herbicide applications. University research has proven to be practical and applicable in the field. Growers who make fall herbicide applications have an easier time keeping weeds under control in the following [...]

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How do you analyze test plot data?

Most farmers plant single strips of several hybrids and try to select hybrids for the following year. Single strips are OK for observations but replications can measure variability and give you more reliable results. Consider the following points for analyzing test plot data. • One location or test is not enough to draw conclusions about [...]

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corn seed

Corn maturity and drydown

Corn kernels are about 32% to 30% moisture content at physiological maturity or when black layer develops. Several factors influence field drydown after black layer. Kernel moisture content decreases faster with warm, dry weather and may decrease slowly in a wet and cool environment. Fuller season corn hybrids that require more growing degree units (GDUs) [...]

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Causes and cures of ear droppage in corn

There are several reasons for ears falling off of corn plants. Ear droppage may be caused by both genetic and environmental factors. Corn breeders try to discard the experimental hybrids with a tendency to drop ears and select hybrids with good ear retention. • I had observed a lot of European corn borer damage in [...]

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Factors affecting corn dry down in the field

Growers like to have hybrids with high yield potential, excellent disease tolerance, great standability, faster dry down and lower grain moisture at harvest. Well there seem to be a contradiction here. Hybrids that live longer are not going to die earlier and dry fast. Management decisions such as planting date, plant population, amount of nitrogen [...]

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How to prevent N leaching

Even though it appears that we are headed for a record corn crop, some farmers have noticed signs of nitrogen deficiency showing up in their crops. According to some of the Seed Consultant professionals, these growers applied the nitrogen fertilizers by splitting application and side-dressed as late as possible. However, the drenching rains that followed [...]

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Beans 2012

Maximizing soybean yield potential

The payoff of a year’s worth of planning, planting and preparation is finally getting started with soybean harvest this fall. The soybean yield at harvest is affected by several factors starting before planting occurs. Although most are focused on late season rainfall and preparing for the upcoming harvest, it is always important to review current [...]

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How does flooding affect corn?

We have seen a lot of corn fields that were flooded in the low-lying areas. How does flooding affects corn plants and what can we do about it? • Like people, if plants can’t breathe, they can’t survive for long. Flooding interrupts the breathing and photosynthetic processes of plants. Obviously, plants which are completely covered [...]

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Palmer amaranth management tips

During winter meetings we have been emphasizing the importance of controlling Palmer Amaranth, one of the most dangerous weeds for Ohio agriculture. It is one of the fastest spreading weeds that is trying to get a foothold in the Corn Belt. It can spread like wild fire unless stopped in its tracks. Check out the [...]

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This field in Union County looked about the same two years ago at this time.

Problem soybean fields can recover

Corn got off to a rocky but reasonable start this year but soybeans went in at a rougher point as we progressed through the planting season. I am reminded of Purdue University’s Bob Nielsen and his corn article of a couple of years ago about the ugly duckling — ugly corn can turn into a [...]

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