Comparison between tillage transect and supplementary data
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Comparison between tillage transect and supplementary data
GLPF Grant- Team meeting #5July 23-24, 2013
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Tillage transects• Developed by NRCS and CTIC
• Record crop, tillage, and estimate residue cover along a road transect throughout the Sandusky River Watershed Seneca, Sandusky, Crawford,
and Wyandot Counties Also used throughout the
Maumee Watershed
• Transects conducted 2x a year (spring and fall) since 2009
• Each transect revisits the exact same GPS coordinates
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Dominant crops
Corn Soybean Wheat Hay Other CRP
Across years Corn Soybean Wheat Hay Other CRP
Transect 35% 45% 14% 2.6% 1.5% 1.4%
P strat 36% 39% 22% 1.8% 1.5% n/a
Spring Fall P strat.
2009 2010 2011 2012
% o
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t
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previous planned0
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2009 2010 2011 20120
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Corn
• Note: cover and vertical till was not recorded until 2011, zeroes in 2009-2010 doesn’t mean it wasn’t there
No Till Cover Vertical Mulch (>30% residue)Strip (>30% residue) Reduced (15-30% residue) Conventional (plow or <15% residue)
2009 2010 2011 2012
% o
f tra
nsec
t
0
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2009 2010 2011 2012
51%
31%
79%
9%
37% 39%
74% 64% 52% 78%
36%
10%
24%
31%
Spring Fall
25%18%
16%
Corn Soybean Wheat Hay Other
Crop planted next
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2009 2010 2011 2012
% o
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t
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Soybean
• Note: cover and vertical till was not recorded until 2011, zeroes in 2009-2010 doesn’t mean it wasn’t there
No Till Cover Vertical Mulch (>30% residue)Strip (>30% residue) Reduced (15-30% residue) Conventional (plow or <15% residue)
Corn Soybean Wheat Hay Other
Crop planted next2009 2010 2011 2012
% o
f tra
nsec
t
0
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2009 2010 2011 2012
20%
53%
13%
58%
14%19%
60% 64% 59% 75%51%
26%
28%
Spring Fall
34%26%
19%11%
21%17%
14%11%10%
11%23%
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2009 2010 2011 2012
% o
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nsec
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Wheat
• Note: cover and vertical till was not recorded until 2011, zeroes in 2009-2010 doesn’t mean it wasn’t there
No Till Cover Vertical Mulch (>30% residue)Strip (>30% residue) Reduced (15-30% residue) Conventional (plow or <15% residue)
Corn Soybean Wheat Hay Other
Crop planted next2009 2010 2011 2012
% o
f tra
nsec
t
0
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2009 2010 2011 2012
15%
72%
31%
87%
75%
27% 14% 21% 78%99% 92%
Spring Fall8%
51%
8%
33%
7%12% 10% 12% 13%
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Crop rotation compared with Supplementary data
2009 2010 2011 2012
% o
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nsec
t
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2009 2010 2011 20120
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2009 2010 2011 20120
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P strat
% o
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nsec
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P strat
% o
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P strat%
of t
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Corn Soybean Wheat Hay Other
After corn: After soybean: After wheat:
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P strat Spring Fall
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P strat Spring Fall0
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P strat Spring Fall0
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Tillage practices compared with supplementary data
• Results are very similar for the tillage transect and supplementary data
No Till/Strip Mulch/Vertical Reduced/Plow
Corn Soybean Wheat
67%
77% 70%
14% 14% 32% 20%
68% 47% 69%83% 86% 34%
41%
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Questions?