Leaders estimate fall corn yields at 218.4 bushels per acre
Soybean pod counts high, but disease and
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[August 23, 2016]
- The Logan County Farm Bureau Young Leaders conducted their 2nd
annual crop tour on the 18th of August. The main goal of the crop
tour is to obtain an estimated corn yield for Logan County. Daniel
Eeten, Jared Brown, Kyle Atteberry, Kyle Klockenga, Eli Klokkenga
and Matt Wrage spear headed the crop tour with consistency and
accuracy in mind.
There have been high hopes this year for a very large crop. Last
year the excess moisture left many holes in the crop that shaved of
the top end of yields. This year it seems every field has a complete
stand of corn or beans with no holes.
All samples were taken with the same strategy. Enter a field from
multiple locations, go well beyond the end rows to a point that was
representative of the field, take a harvestable ear count and select
every 10th ear for a sample. Kernel counts were taken from all the
ear samples and multiplied by their respected stand counts.
Left to right,
members of the team are Daniel Eeten, Eli Klokkenga, Matt Wrage,
Jared Brown, and Kyle Atteberry. Kyle Klockenga was not available
for the photo.
The counts were divided by 85,000
kernels per bushel. The 85,000 kernels count was selected based on
the evaluation of all the ears that were pulled. This strategy was
performed in four locations of every field sampled. The specific
fields sampled were randomly chosen however they were in strategic
locations to provide the best possible coverage for the county.
Samples were taken from each township in the county. To analyze the
data, the county was divided into 4 quadrants (NW,SW,SE,NE).
The Numbers are in:
- Northwest Quadrant 222.9 BPA
- Southwest Quadrant 210.0 BPA
- Southeast Quadrant 217.4 BPA
- Northeast Quadrant 231.0 BPA
- Estimated County Average 218.4 BPA
Trying to evaluate the crop’s yield potential across the entire
county based on a relatively small sample is a difficult task.
Although the samples were random, there are many factors to
consider when placing value on each sample such as farming
practices, soil types, whether the field is corn on corn and
also the hybrid. The average harvestable ear stand count came in
at 32,430 per acre. Within that stand count the team all
commented on variable ear size with a few more “runts” than
expected. The majority of the ears pulled had some extent of
“tip back”. Despite good growing conditions, the heat during the
week of July 20th is likely to blame.
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In addition to the yield estimate, notes were also taken on the progress and the
agronomic state of the crop. The northern half of the county had many plants
that were “goose necked” likely from the wind events that occurred towards the
end of June. Overall stalk integrity was decent. Some ear molds were present in
a few of the sampled fields. This included diplodia, aspergillus as well as
gibberella. None of the samples taken had reached black layer (physiological
maturity). Many of the fields still have a lot of green left in them and appear
to have had enough nitrogen to finish. Almost every field showed some pressure
from the disease grey leaf spot.
The group did not attempt to estimate yield on soybeans. Soybeans are extremely
difficult to predict. Their yield levels can fluctuate all the way to the end of
the plants life due to seed size. Overall Soybeans are very tall this year which
is not always ideal for high yields. The recent rains have caused many fields to
lay over which created ideal conditions for molds and disease within the canopy.
One does not have to search hard to find disease such as Sudden Death, Brown
Stem Rot or even White Mold. All of these can have a substantial impact on final
yield. However, pod counts have been high and with the recent rains it would
suggest that soybean yields will be slightly higher than average. For more
information on the crop tour or the Logan County Farm Bureau Young Leaders Group
please contact the Logan County Farm Bureau at 217-732-7326.
Last year's results
Local Farm Bureau Young Leaders conduct crop tours