Using Fieldwork Days Data to Manage Fieldwork
Ray Massey and Pat GuinanUniversity of MissouriCommercial Ag Program
Crop Progress and Fieldwork DaysApril through November USDA data –
Reporters’ opinion of ▪ crop conditions and soil conditions allowing
equipment into the field▪ Percent of crops at various stages
http://www.nass.usda.gov/Statistics_by_State/Missouri/Publications/Crop_Progress_and_Condition/
Crop Reporting Districts
NW Missouri Field Workdays
Mar 27Ap
r 10Ap
r 24
May 08
May 22
Jun 05
Jun 19
Jul 03
Jul 17
Jul 31Au
g 14Au
g 28Se
p 11Se
p 25Oct
09Oct
23Nov
06Nov
200
1
2
3
4
5
6
Day
s pe
r w
eek
NW Corn Planting Date
Mar 20Apr 03
Apr 17May 01
May 15May 29
Jun 12Jun 26
0102030405060708090
100
1980-1989 1990-1999 2000-2010
Perc
ent
Com
plet
e
Average Date of
Last Spring Frost
Missouri April Precipitation
19801982
19841986
19881990
19921994
19961998
20002002
20042006
20080.00
2.00
4.00
6.00
8.00
10.00
Apr
il Pr
ecip
itatio
n (in
.)
Median Date of Last Spring Frost (≤32°F) 1971-2000
NW MO Corn Planting: Median date
1977
1979
1981
1983
1985
1987
1989
1991
1993
1995
1997
1999
2001
2003
2005
2007
2009
20-Mar
9-Apr
29-Apr
19-May
8-Jun
28-Jun
18-JulMedian Trendline Outliers
Day
s
1 day earlier every 6 years
NW MO Corn Planting: Days between 25th and 75th percentiles
1977
1979
1981
1983
1985
1987
1989
1991
1993
1995
1997
1999
2001
2003
2005
2007
2009
0
5
10
15
20
25
30
35
40 Days between Trendline Outliers
Dur
atio
n in
Day
s Increase 1 day every 6 years.
NW Corn Harvesting Date
Aug 21Sep 04
Sep 18Oct 02
Oct 16Oct 30
Nov 13Nov 27
Dec 110
102030405060708090
100
1980-1989 1990-1999 2000-2010
Perc
ent
Com
plet
e
Average Date of First Fall
Frost
Factors Affecting Planting DateWeather: rainfall and temperatureSeed CoatsSeed GeneticsSeed Company Promotions – replant
provisionsAdoption of no-tillLarger equipment – faster plantingLarger farmsCustom fertilizer and farming
Uses of PFDM Equipment management – number of
pieces of equipment necessary to complete fieldword with confidence.
Land acquisition questions – can I add 200 acres with existing equipment?
Cropping dynamics – given delayed planting, what is the probability successfully carrying out current cropping plan.
Nutrient management plans – probability of completion for regulatory purposes
crops.missouri.edu
MU Resource Guides
Crops.missouri.eduSwine.missouri.eduBeef.missouri.eduDairy.missouri.edu
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