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Angie Peltier


Angie Peltier
Former Extension Educator, Commercial Agriculture



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Hill and Furrow

Current topics about crop production in Western Illinois, including field crops research at the NWIARDC in Monmouth.
Figure. Corn planting progress in the Western Illinois crop reporting district in late May (1996-2013) (Data source: USDA-NASS).
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Late May Planting Progress in Western Illinois - 1996 through 2013


What a difference a year can make! Last year at this time, according to the USDA National Agriculture Statistics Service (NASS), in the Western Illinois Crop Reporting District (CRD) corn plants were 14 inches tall and 89 percent of soybeans had emerged!

USDA-NASS released their "Illinois Weather and Crops" report on May 27th. In the Western CRD, 83 percent of intended corn acres and 25 percent of intended soybean acres have been planted. We can compare 2013 late May planting progress to previous years. In recent years the only other year in which corn and soybean planting progress was as delayed as in 2013 was 2002, when between 43 and 68 percent of the fields had surplus topsoil moisture between mid-April and late-May (Figures).

The Northwestern Illinois Agricultural Research and Demonstration Center (NWIARDC) is an official National Weather Service reporting site and Brian Mansfield or Marty Johnson collect weather data including soil temperature, air temperature and precipitation each workday. The NWIARDC received 7.21 and 10.55 inches of rain in April and May, respectively (Figure and Table). Although May 2010 was wetter than in 2013 (11.42 inches), April air temperatures in 2010 were more than 12 degrees warmer on average than in 2013, speeding planting progress.

 

MAY 2013 WEATHER

Soil Temperature

Air Temp

Growing degree units

4" (Bare)

4" (Sod)

(°F)

-------------------(°F)-----------------

Monthly average high

72

Monthly total: 425

69

63

Monthly average low

53

59

59

Observed high (date)

89 (15)

25.5 (1,15)

85 (17)

72 (31)

Observed low (date)

35 (12)

1 (11,26)

43 (13)

46 (3)

2013 PRECIPITATION (in inches)

Since January 1

Month

Monthly Total

Monthly departure from average

Total accumulation

Total departure

January

2.41

+0.89

2.41

+0.89

February

2.17

+0.63

4.58

+1.52

March

2.23

-0.30

6.81

+1.22

April

7.21

+3.33

14.02

+4.55

May

10.55

+5.76

24.55

+10.31

At the NWIARDC, all intended corn acres, except those in a late planting date experiment, have been planted. Soybean planting has been significantly delayed by the rain which has resulted in significant water pooling in fields (Figure). Only 35 percent of the soybean trials and no bulk soybean acres have been planted. Much of the winter wheat has started heading and the cool wet weather has favored foliar fungal diseases.



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