As the staff at Southern Planter explains, respect the calendar.
Corn Planting: Respect The Calendar
Published: Mar 23, 2012
By: Chad Lee
The
weather is warm, the soil is warm, the redbuds are blooming... it seems like we
should be planting corn! Some producers have sprayed their burndown herbicides,
which is a good thing this season considering how large weeds could get. Some
have finished applying anhydrous ammonia, which is good because soil conditions
are good. Now that these major tasks are done, all that is left is to plant
corn. The fields are ready, but the calendar is not.
Last
season, the rains came in early and stayed late. Every farmer was pushed to get
corn planted at all, let alone in a timely fashion. Late plantings, especially
on soybeans did better than "early" plantings last year. The calendar
says late plantings hurt yields. This spring, something internally says that
everything else is ready, let's plant some corn!
So, which is right: the current field conditions
or the calendar?
The
calendar says that there is 50% chance that the final freeze occurs after April
13 for Mayfield, Princeton, and Russellville. There is a 90% chance the the
final freeze occurs after April 1 for Mayfield, March 31 for Princeton and
March 30 for Russellville. The odds do not favor planting corn in March.
Recent
history says we've seen something like this before. In 2007, daily maximum air
temperatures in Mayfield, Kentucky were above 70 degrees from March 22 to April
3. During that same period, the lows didn't go below 50 degrees. Then, the
bottom fell out. From April 5 to April 10, the lows did not get above 20
degrees! Corn planted the last two weeks of March emerged in less than 7 days,
grew rapidly and was no match for the cold weather. Farmers replanted 100,000
acres or more of corn that year.
There is
no way to predict if 2012 will be a repeat of 2007. The calendars have been
wrong before. But, the odds are in favor of another freeze event. Would it be a
big enough freeze event to cause severe damage to young corn seedlings? That is
the gamble.
I
overheard a conversation where one farmer said he was going fishing until the
first of April. That may be the best advice. Enjoy the nice weather, but
respect the calendar.
Lee is the
Extension Agronomist at the University of Kentucky
So, what do you think about the recent bursts of warm weather? We'd love to hear from you.