Long-term impacts of residue harvesting on soil quality

Laird, D. A.; Chang, C. W.

doi:10.1016/J.STILL.2013.07.001

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Soil and Tillage Research · 2013

Long-term impacts of residue harvesting on soil quality

Laird, D. A., Chang, C. W.

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Long-term impacts of residue harvesting on soil quality

No abstract in the library.

Findings

What changed what, as the paper reports it. Grouped by the measured property. The largest groups are open; open the others as you need them.

total N

↓ 3= 25

decrease
removal of approximately 90% of above ground residue vs. residue not removedsignificant · 0–5 cm · after 19 years · NTRM plots near Rosemont MN · Marginal P<0.10

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Long-term impacts of residue harvesting on soil quality · Knowledge Library

N mineralization potential

↓ 4= 15

decrease
removal of approximately 90% of above ground residue vs. residue not removedsignificant · 0–5 cm · after 19 years · NTRM plots near Rosemont MN
Numbers
- treatment 37.75 vs. control 75.42 mg-N/kg (-49.95 %)
Source · p. 7
“N mineralization potential decreased by 14.42 to 49.94% due to residue removal”
Source · p. 4
“| 0–5 | 75.42 | 37.75 | 49.94 | 2.08 | P \< 0.05 |”
no effect
removal of approximately 90% of above ground residue vs. residue not removednot significant · 5–15 cm · after 19 years · NTRM plots near Rosemont MN
Numbers
- treatment 38.32 vs. control 44.77 mg-N/kg (-14.41 %)
Source · p. 7
“All of these changes in N mineralization potential were significant (P \< 0.05) with the exception of the no-till 5–15 cm depth samples.”
decrease
removal of approximately 90% of above ground residue vs. residue not removedsignificant · 15–30 cm · after 19 years · NTRM plots near Rosemont MN
Numbers
- treatment 15.69 vs. control 21.3 mg-N/kg (-26.34 %)
Source · p. 7
“the decreases in N mineralization potential were comparable on a percentage bases in the 15–30 cm depth samples to the values for the 0–5 and 5–15 cm depth samples.”
Source · p. 4
“| 15–30 | 21.30 | 15.69 | 26.32 | 2.63 | P \< 0.025 |”
decrease
removal of approximately 90% of above ground residue vs. residue not removedsignificant · 0–30 cm · after 19 years · NTRM plots near Rosemont MN · Chisel and moldboard plow; all pairs P<.05 or stronger
Numbers
- treatment 53.75 vs. control 73.22 mg-N/kg (-26.59 %) · 0–5 cm · chisel
- treatment 36.29 vs. control 49.56 mg-N/kg (-26.78 %) · 5–15 cm · chisel
- treatment 15.46 vs. control 22.79 mg-N/kg (-32.16 %) · 15–30 cm · chisel
- treatment 33.77 vs. control 47.33 mg-N/kg (-28.65 %) · 0–5 cm · plow
- treatment 32.45 vs. control 40.6 mg-N/kg (-20.07 %) · 5–15 cm · plow
- treatment 21 vs. control 28.19 mg-N/kg (-25.51 %) · 15–30 cm · plow
Source · p. 7
“N mineralization potential decreased by 14.42 to 49.94% due to residue removal”
Source · p. 7
“All of these changes in N mineralization potential were significant (P \< 0.05) with the exception of the no-till 5–15 cm depth samples.”
decrease
fallow vs. grass boarder stripssignificant · 0–30 cm · after 19 years · NTRM plots near Rosemont MN · External control strips, two samples per group; not randomized treatment plots
Numbers
- treatment 56.11 vs. control 185 mg-N/kg (-69.66 %) · 0–5 cm
- treatment 31.39 vs. control 88.28 mg-N/kg (-64.44 %) · 5–15 cm
- treatment 5.74 vs. control 24.4 mg-N/kg (-76.48 %) · 15–30 cm
Source · p. 7
“The N mineralization potential for soil from the fallow strip was 64.44 to 76.48% lower than for the continuous grass soil samples.”

soil organic C

↓ 2= 24

decrease
removal of approximately 90% of above ground residue vs. residue not removedsignificant · 0–5 cm · early May after 19 years · NTRM plots near Rosemont MN · Author calls P<0.10 marginal; fertilizer/lime pooled
Numbers
- treatment 25.84 vs. control 31.72 g-C/kg (-18.54 %) · 0–5 cm
Source · p. 3
“residue removal resulted in a marginally significant (P \< 0.10) 18.5% loss of OC for the surface soil (0–5 cm depth).”
no effect
removal of approximately 90% of above ground residue vs. residue not removednot significant · 5–30 cm · early May after 19 years · NTRM plots near Rosemont MN
Numbers
- treatment 26 vs. control 26.66 g-C/kg (-2.476 %) · 5–15 cm
- treatment 20.5 vs. control 19.58 g-C/kg (+4.699 %) · 15–30 cm
Source · p. 3
“No effect of residue removal was apparent for the 5–15 and 15–30 cm depths in the no-till samples.”
decrease
removal of approximately 90% of above ground residue vs. residue not removedsignificant · 0–15 cm · early May after 19 years · NTRM plots near Rosemont MN · Chisel and moldboard plow; fertilizer/lime pooled
Numbers
- treatment 24.66 vs. control 29.53 g-C/kg (-16.49 %) · 0–5 cm · chisel
- treatment 24.72 vs. control 27.8 g-C/kg (-11.08 %) · 5–15 cm · chisel
- treatment 24.54 vs. control 27.1 g-C/kg (-9.446 %) · 0–5 cm · plow
- treatment 23.16 vs. control 27.18 g-C/kg (-14.79 %) · 5–15 cm · plow
Source · p. 3
“residue removal resulted in highly significant (P \< 0.01) losses of OC ranging from 9.45 to 16.48% for both the 0–5 and 5–15 cm depths but no apparent effect for the 15–30 cm depth in the chisel and plow tillage systems.”
no effect
removal of approximately 90% of above ground residue vs. residue not removednot significant · 15–30 cm · early May after 19 years · NTRM plots near Rosemont MN · Chisel and moldboard plow
Numbers
- treatment 20.36 vs. control 20.33 g-C/kg (+0.1476 %) · chisel
- treatment 22.56 vs. control 23.15 g-C/kg (-2.549 %) · plow
Source · p. 3
“but no apparent effect for the 15–30 cm depth in the chisel and plow tillage systems.”

pH

↓ 1= 34

no effect
removal of approximately 90% of above ground residue vs. residue not removednot significant · 0–5 cm · after 19 years · NTRM plots near Rosemont MN
Numbers
- treatment 4.84 vs. control 4.9 pH units (-1.224 %)
Source · p. 7
“The change in pH due to residue removal was generally not significant with the exception of the 5–15 cm depth for the no-tillage system.”
decrease
removal of approximately 90% of above ground residue vs. residue not removedsignificant · 5–15 cm · after 19 years · NTRM plots near Rosemont MN
Numbers
- treatment 5.88 vs. control 6.16 pH units (-4.545 %)
Source · p. 7
“The change in pH due to residue removal was generally not significant with the exception of the 5–15 cm depth for the no-tillage system.”
Source · p. 4
“| 5–15 | 6.16 | 5.88 | 4.58 | 2.88 | P \< 0.025 |”
no effect
removal of approximately 90% of above ground residue vs. residue not removednot significant · 15–30 cm · after 19 years · NTRM plots near Rosemont MN
Numbers
- treatment 6.18 vs. control 6.19 pH units (-0.1616 %)
Source · p. 7
“The change in pH due to residue removal was generally not significant with the exception of the 5–15 cm depth for the no-tillage system.”
no effect
removal of approximately 90% of above ground residue vs. residue not removednot significant · 0–30 cm · after 19 years · NTRM plots near Rosemont MN · Chisel and moldboard plow; lime and N histories pooled
Numbers
- treatment 5.39 vs. control 5.35 pH units (+0.7477 %) · 0–5 cm · chisel
- treatment 5.82 vs. control 6 pH units (-3 %) · 5–15 cm · chisel
- treatment 6.2 vs. control 6.18 pH units (+0.3236 %) · 15–30 cm · chisel
- treatment 5.6 vs. control 5.4 pH units (+3.704 %) · 0–5 cm · plow
- treatment 5.78 vs. control 5.88 pH units (-1.701 %) · 5–15 cm · plow
- treatment 5.9 vs. control 5.89 pH units (+0.1698 %) · 15–30 cm · plow
Source · p. 7
“The change in pH due to residue removal was generally not significant with the exception of the 5–15 cm depth for the no-tillage system.”

Sites

NTRM plots near Rosemont MN

Location: University of Minnesota Outreach, Research and Education Experiment Station near Rosemont MN44.72° N, 93.10° W
Soil: Typic Hapludoll (fine-silty over skeletal, mixed, superactive, mesic) · USDA
Land use: plotsArable land
Management on the whole site: MaizeMaize/Corn/Zea mays, soybeansSoybean/Glycine max

Soil layers
Depth	Texture	Clay	pH	Organic C	Bulk density
0–5 cm	silt loam	–	–	–	–
5–15 cm	silt loam	–	–	–	–
15–30 cm	silt loam	–	–	–	–

Long-term impacts of residue harvesting on soil quality

Findings

total N

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Long-term impacts of residue harvesting on soil quality

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