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RANDOM RAMBLINGS ON RAIN
AND CROPS
Mike
Rankin
Crops and Soils Agent
University of Wisconsin - Extension
As I was taking my
alfalfa forage samples a little over a month ago, the farmer whose field I
was pilfering plants stopped to talk and mentioned, “Everything would be
perfect if we could just get some rain.” The following week of sampling he
offered the same lament. Of course he was right, May had been dry.....real
dry.
Fast forward (okay, not so fast but still
forward) to June...enough rain to make Gene Kelly stop singing and head for
cover. In case you’re wondering, the official June total to date from the
Fond du Lac County Airport is 10.51 inches. Data is also available from the
Weather Underground (a neat little weather website with real-time weather
observations) for an observer in Brandon who has dumped nearly 14 inches out
of his rain gauge this month.
Weather events such as the one just experienced usually get the old timers
reminiscing about the great flood of “fill in the blank.” The problem of
course is that you don’t have to be an old timer this time around. Simply
hearken back to May of 2004...our last 100-year rain event. That month we
dumped about 13.5 inches out of the gauge. Some quick figuring on my old
abacus tells me that we should now be good for another 200 years before our
next dramatic bout with precipitation.
Whenever rain or lack of rain events occur
to the extent just experienced, there is mad rush to estimate dollar losses
before the water on the window pane has runoff. Everyone...and I mean
everyone...wants to know. Include in this group the local and federal
government, radio stations, T.V. stations, and a plethora of newspaper
reporters. I recall a time back in the early 1990’s following another
100-year rain (okay, maybe it was only a 50-year job) and being interviewed
in front of a farmer’s field while carp were jumping among the submerged
corn plants. I’m sure the video was more compelling than anything I had to
say.
Agricultural loss estimates for the county
mounted quickly this year with commodity prices being two to three times
what they were in 2004. The dramatic losses could be easily seen in the form
of flooded portions of fields, some of which will not survive. However, the
greater total dollar loss will come on those fields that did survive but
with significant yield reductions. These yield losses will be caused by
factors such as lost nitrogen (yellow corn is already prevalent across the
county), delayed weed control, increased disease pressure, soil erosion and
silting, inhibited plant root growth, a delayed hay harvest, and delayed
planting. In total, I’m estimating that total loss to major agricultural
crops in the county will push the 30 million dollar mark (an emphasis on
estimating although there is a process). Hopefully those producers with crop
insurance have already become good friends with their policy provider. Of
course many do not have insurance.
The “real” loss to the agricultural sector
won’t be known for quite some time. Much hinges on the weather for the
remainder of the growing season. Hot and dry conditions later this summer
could be especially hard on crops that did not develop adequate root
systems. It’s hard to say, but we will need more rain. Also on the wish list
is a late fall frost that will help mature late-planted crops.
Through the years many genetic advances
have been made to help crops better persist the stresses of weather and
pests. Even so, we learn time and time again that despite of the best laid
plans and science, environment always has the ability to humble technology.
For
more information contact Mike Rankin
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