|
|
Table
1. Morphology of representative pedon at Brown Loam
Branch research site.
|
|
Classification:
|
Loring
Silt (fine-silty, mixed, thermic Typic
Fragiudalfs)
|
|
Geomorphic
position:
|
Upland
|
|
Slope:
|
2
percent
|
|
Groundwater
|
Water
table below 70 inches
|
|
Vegetation:
|
Dense
Bahiagrass sod
|
|
Parent
Material:
|
Loess
|
|
Pedon
Description
(Moist colors)
|
|
A
|
0-5
inches; brown (10YR 5/3) silt; weak fine granular
structure; very friable; many fine and medium
roots; few reddish brown, round concretions; clear
smooth boundary.
|
|
E
|
5-10
inches; pale brown (10YR 6/3) silt; weak fine
subangular blocky structure; slightly firm in
place, friable when disturbed; many fine and medium
roots; few concretions; clear smooth
boundary.
|
|
Bt1
|
10-15
inches; strong brown (7.5YR 5/8) silt loam;
moderate fine subangular blocky structure; friable;
thick argillans on ped faces and lining pores; many
fine and medium roots; few concretions; clear
smooth boundary.
|
|
Bt2
|
19-26
inches; strong brown (7.5 YR 5/6) and light gray
(10YR 7/2) silt loam with white (10YR 8/2) seams;
weak coarse prismatic parting to weak fine angular
and subangular blocky structure; firm; common round
dark reddish brown concretions; few fine roots in
polygonal seams between prisms; gradual wavy
boundary
|
|
Btx2
|
26-33
inches; pale brown (10YR 6/3) silt loam with light
gray (10YR 7/2) silt coatings on ped faces and many
medium distinct brownish yellow (10YR 6/6) mottles;
weak medium prismatic parting to weak fine
subangular blocky structure; firm; thick argillans
on ped faces; gradual wavy boundary.
|
|
Btxc1
|
33-42
inches; pale brown (10YR 6/3) silt loam with common
medium distinct yellowish brown (10YR 5/6) and few
fine distinct reddish yellow (7.5YR 6/8) mottles;
weak medium prismatic parting to weak fine
subangular blocky structure; firm; common vesicular
pores; light gray (10YR 7/2) silt coatings on prism
faces; thick argillans on ped faces; 5-15 percent
dark reddish brown round concretions; gradual wavy
boundary.
|
|
Btxc2
|
42-60
inches; mottled strong brown (7.5YR 5/8), brownish
yellow (10YR 6/8), pale brown (10YR 6/3), and dark
yellowish brown (10YR 4/6) silt loam; weak coarse
prismatic parting to weak fine subangular blocky
structure; firm; 15-30 percent round dark reddish
brown concretions; common vesicular pores; thin
argillans on ped faces.
|
|
Table
2. Particle size distribution of representative
pedon at Brown Loam Branch research
site.
|
|
Horizon
|
Depth
|
Sand
|
Silt
|
Clay
|
Textural
class2
|
|
VC1
|
C
|
M
|
F
|
VF
|
Total
|
|---|
|
|
in
|
pct
|
pct
|
pct
|
pct
|
pct
|
pct
|
pct
|
pct
|
|
|
A
|
0-5
|
0.52
|
0.66
|
0.55
|
0.81
|
1.09
|
3.63
|
84.91
|
11.46
|
SI
|
|
E
|
5-10
|
0.65
|
0.55
|
0.37
|
0.80
|
1.34
|
3.71
|
84.86
|
11.43
|
SI
|
|
Bt1
|
10-15
|
0.12
|
0.27
|
0.45
|
0.66
|
0.93
|
2.43
|
74.42
|
23.15
|
SIL
|
|
Bt2
|
15-19
|
0.23
|
1.03
|
0.94
|
0.92
|
1.08
|
4.20
|
71.26
|
24.54
|
SIL
|
|
Btx1
|
19-26
|
0.05
|
1.06
|
1.25
|
1.23
|
1.49
|
5.08
|
75.63
|
19.29
|
SIL
|
|
Btx2
|
26-33
|
0.89
|
2.18
|
1.26
|
1.27
|
1.17
|
6.77
|
69.99
|
23.24
|
SIL
|
|
Btxc1
|
33-42
|
0.07
|
1.00
|
0.97
|
0.91
|
1.02
|
3.97
|
72.79
|
23.24
|
SIL
|
|
Btxc2
|
42-69
|
0.05
|
0.74
|
0.59
|
0.65
|
0.87
|
2.90
|
79.10
|
18.00
|
SIL
|
1V = Very Coarse, C = Coarse, M = Medium, F =
Fine, and VF = Very Fine.
2Sl = Silt and SIL = Silt Loam.
|
Table
3. Chemical characteristics of representative pedon
at Brown Loam Branch research site.
|
|
Depth
|
pH
|
Organic
matter
|
Exchangeable
cations (cmolc/kg)
|
Base
saturation
|
|
Ca
|
Mg
|
K
|
Na
|
H
|
Al1
|
CEC2
|
|---|
|
in
|
|
pct
|
|
|
|
|
|
|
|
pct
|
|
0-5
|
5.4
|
2.39
|
4.18
|
0.71
|
0.11
|
0.04
|
7.16
|
0.39
|
12.20
|
41.31
|
|
5-10
|
5.8
|
1.42
|
4.27
|
0.76
|
0.07
|
0.03
|
5.19
|
0.14
|
10.32
|
49.71
|
|
10-15
|
5.8
|
0.44
|
5.56
|
2.50
|
0.14
|
0.05
|
4.65
|
0.15
|
12.90
|
63.95
|
|
15-19
|
5.4
|
0.30
|
4.34
|
2.94
|
0.17
|
0.10
|
7.41
|
1.95
|
14.96
|
50.47
|
|
19-26
|
5.3
|
0.14
|
2.16
|
2.91
|
0.15
|
0.19
|
7.61
|
2.76
|
13.02
|
41.55
|
|
26-33
|
5.5
|
0.12
|
2.48
|
6.30
|
0.23
|
0.49
|
7.35
|
3.10
|
16.85
|
56.38
|
|
33-42
|
5.3
|
0.02
|
3.41
|
7.64
|
0.22
|
0.65
|
5.50
|
1.42
|
17.42
|
68.43
|
|
42-60
|
6.4
|
0.06
|
4.22
|
8.13
|
0.16
|
0.73
|
3.04
|
0.19
|
16.28
|
81.33
|
1Not included in the summation of exchangeable
cations.
2Summation of exchangeable cations.
|
Table
4. Bulk density, saturated hydraulic conductivity,
and moisture retention of representative pedon at
Brown Loam Branch research site.
|
|
Depth
|
Bulk
density
|
Hydraulic
conductivity
|
Moisture
retention (Bar)
|
|
1/3
|
1
|
3
|
6
|
15
|
|---|
|
in
|
g/cc
|
in/h
|
pct
|
pct
|
pct
|
pct
|
pct
|
|
0-5
|
1.35
|
1.52
|
29.5
|
27.0
|
26.0
|
24.1
|
21.9
|
|
5-10
|
1.36
|
0.09
|
22.1
|
19.7
|
18.5
|
16.1
|
14.5
|
|
10-15
|
1.52
|
0.02
|
23.3
|
21.2
|
20.3
|
18.8
|
17.2
|
|
15-19
|
1.42
|
0.18
|
27.0
|
24.1
|
22.9
|
20.7
|
19.2
|
|
19-26
|
1.38
|
0.13
|
26.3
|
23.1
|
21.5
|
19.4
|
17.6
|
|
26-33
|
1.51
|
0.01
|
26.4
|
24.1
|
23.0
|
21.5
|
19.9
|
|
33-42
|
1.51
|
0.005
|
26.1
|
23.7
|
22.2
|
20.4
|
19.0
|
|
42-60
|
1.51
|
0.001
|
26.3
|
23.3
|
21.4
|
19.1
|
17.4
|
|
Table
5. Mean particle size distribution, bulk density,
and saturated hydraulic conductivity of control and
Aer WayTM treated plots at Brown Loam
Branch.1
|
|
Depth
|
Sand
|
Silt
|
Clay
|
Bulk
density
|
Saturated
hydraulic conductivity
|
|
in
|
pct
|
pct
|
pct
|
g/cc
|
in/h
|
|
Control
|
|
0-2
|
4.81a
|
83.88a
|
11.31a
|
1.12a2
|
0.15a2
|
|
2-5
|
4.55a
|
83.24a
|
12.21a
|
--
|
--
|
|
Aer
WayTM Treated
|
|
0-2
|
4.89a
|
83.81a
|
11.30a
|
1.15a2
|
0.19a2
|
|
2-5
|
4.23a
|
83.37a
|
12.40a
|
--
|
--
|
1Means not having a letter in common differ
significantly at the 5 percent (P=0.05) level according to
the Least Significance Difference Criterion.
20-4 inches depth.
|
Table
6. Mean chemical characteristics of control and Aer
WayTM plots at Brown Loam
Branch.
|
|
Depth
|
pH
|
Organic
matter
|
Exchangeable
cations (cmolc/kg)
|
Base
saturation
|
|
Ca
|
Mg
|
K
|
Na
|
H
|
Al1
|
CEC2
|
|---|
|
in
|
|
pct
|
|
|
|
|
|
|
|
pct
|
|
Control
|
|
0-2
|
5.3
|
4.6
|
5.60
|
1.44
|
0.32
|
0.04
|
8.23
|
0.27
|
15.63
|
47
|
|
2-5
|
5.7
|
2.4
|
5.53
|
0.91
|
0.13
|
0.05
|
6.16
|
0.20
|
12.78
|
51
|
|
Aer
WayTM Treated
|
|
0-2
|
5.3
|
4.9
|
5.39
|
1.41
|
0.52
|
0.04
|
8.41
|
0.20
|
15.77
|
46
|
|
2-5
|
5.6
|
2.3
|
4.99
|
0.72
|
0.29
|
0.04
|
6.34
|
0.24
|
12.38
|
48
|
1Not included in the summation of exchangeable
cations.
2Summation of exchangeable cations.
|
Table
7. Morphology of representative pedon at White
Sands research site.
|
|
Classification:
|
Malbis
fine sandy loam (fine-loamy, siliceous, thermic
Plinthic Paleudults)
|
|
Geomorphic
position:
|
Upland
|
|
Slope:
|
2
to 5 percent
|
|
Groundwater
|
Water
below 70 inches
|
|
Vegetation:
|
Dense
Bahiagrass sod
|
|
Parent
Material:
|
Coastal
Plain sediments
|
|
Pedon
description
(moist colors)
|
|
Ap
|
0-6
inches; dark brown (10YR 4/3) fine sandy loam; weak
fine granular structure; friable; many fine and
medium roots; abrupt smooth boundary.
|
|
EB
|
6-9
inches; yellow (10YR 7/6) sandy loam; weak fine
subangular blocky structure; friable; many fine and
medium roots; few black charcoal flakes; common
medium very pale brown (10YR 8/3) stripped pockets;
abrupt smooth boundary.
|
|
Bt1
|
9-22
inches; strong brown (7.5 YR 5/6) clay loam with
common medium distinct red (2.5YR 4/8) mottles;
weak fine and medium subangular blocky structure;
slightly firm in place, friable when disturbed;
clay films on ped faces and lining pores; many fine
and medium roots; gradual wavy boundary
|
|
Btv1
|
22-35
inches; reddish yellow (7.5 YR 6/8) sandy clay loam
with many coarse distinct yellowish red (5YR 5/8)
and common medium distinct yellow (10 YR 7/8)
mottles; weak coarse prismatic parting to moderate
fine subangular blocky structure; slightly firm in
place, friable when disturbed; clay films on ped
faces; 5-8 percent nodular plinthite; common fine
roots; gradual wavy boundary
|
|
Btv2
|
35-52
inches; mottled brownish yellow (10YR 6/8), strong
brown (7.5 YR 5/6), reddish yellow (7.5 YR 6/8),
and red (2.5YR 4/8) sandy clay; weak coarse
prismatic parting to moderate medium subangular
blocky structure; firm; thick clay films on ped
faces; few very pale brown (10YR 8/3) seams between
prisms; 5-20 percent plinthite; few fine roots in
upper part of horizon and in seams; clear smooth
boundary.
|
|
Bt2
|
52-67
inches; red (10YR 4/8) sandy clay loam with seams
of reddish yellow (7.5YR 6/8); weak coarse
prismatic structure; thick clay films on ped faces;
firm.
|
|
Table
8. Particle size distribution of representative
pedon at White Sands research site.
|
|
Horizon
|
Depth
|
Sand
|
Silt
|
Clay
|
Textural
class2
|
|
VC1
|
C
|
M
|
F
|
VF
|
Total
|
|---|
|
|
in
|
pct
|
pct
|
pct
|
pct
|
pct
|
pct
|
pct
|
pct
|
|
Ap
|
0-6
|
0.23
|
0.42
|
5.86
|
44.16
|
15.19
|
65.86
|
27.81
|
6.33
|
SL
|
EB
|
6-9
|
0.08
|
0.28
|
4.88
|
39.25
|
13.72
|
58.21
|
32.97
|
8.82
|
SL
|
Bt1
|
9-22
|
0.05
|
0.13
|
3.72
|
29.39
|
11.44
|
44.73
|
25.57
|
29.70
|
CL
|
Btv1
|
22-35
|
0.02
|
0.10
|
3.99
|
35.80
|
14.15
|
54.06
|
19.95
|
25.99
|
SCL
|
Btv2
|
35-52
|
0.00
|
0.06
|
2.68
|
37.31
|
12.23
|
52.28
|
10.86
|
36.86
|
SC
|
Bt2
|
52-67
|
0.00
|
0.05
|
1.43
|
32.70
|
21.09
|
55.27
|
9.86
|
34.87
|
SCL
|
|
1V
= Very Coarse, C = Coarse, M = Medium, F = Fine,
and VF = Very Fine.
2SL = Sandy Loam, CL = Clay Loam, SCL =
Sandy Clay Loam, and SC = Sandy Clay.
|
|
Table
9. Chemical characteristics of representative pedon
at White Sands research site.
|
|
Depth
|
pH
|
Organic
matter
|
Exchangeable
cations (cmolc/kg)
|
Base
saturation
|
|
Ca
|
Mg
|
K
|
Na
|
H
|
Al1
|
CEC2
|
|---|
|
in
|
|
pct
|
|
pct
|
|
0-6
|
4.8
|
2.12
|
0.61
|
0.22
|
0.11
|
0.01
|
5.87
|
1.18
|
6.82
|
13
|
|
6-9
|
5.2
|
0.67
|
0.91
|
0.12
|
0.03
|
0.01
|
3.12
|
0.90
|
4.19
|
25
|
|
9-22
|
5.1
|
0.40
|
1.96
|
0.95
|
0.06
|
0.02
|
6.49
|
2.49
|
9.48
|
31
|
|
22-35
|
5.2
|
0.11
|
1.14
|
0.57
|
0.04
|
0.02
|
5.49
|
2.37
|
7.26
|
24
|
|
35-52
|
4.8
|
0.04
|
0.32
|
0.84
|
0.06
|
0.01
|
8.27
|
4.67
|
9.50
|
12
|
|
52-67
|
4.8
|
0.05
|
0.43
|
0.89
|
0.07
|
0.01
|
8.30
|
5.15
|
9.70
|
14
|
|
1Not
included in the summation of exchangeable
cations
2Summation of exchangeable
cations.
|
|
Table
10. Bulk density, saturated hydraulic conductivity,
and moisture retention of representative pedon at
White Sands research site.
|
|
Depth
|
Bulk
density
|
Hydraulic
conductivity
|
Moisture
retention (Bar)
|
|
1/3
|
1
|
3
|
6
|
15
|
|---|
|
in
|
g/cc
|
in/h
|
pct
|
pct
|
pct
|
pct
|
pct
|
0-6
|
1.46
|
0.55
|
13.6
|
11.3
|
8.4
|
7.2
|
5.5
|
6-9
|
1.47
|
0.50
|
12.3
|
9.7
|
7.0
|
5.7
|
4.5
|
9-22
|
1.60
|
0.33
|
15.3
|
13.3
|
11.5
|
10.6
|
8.9
|
22-35
|
1.61
|
0.03
|
18.7
|
17.5
|
15.7
|
14.7
|
13.6
|
35-52
|
1.53
|
0.03
|
22.1
|
20.8
|
18.9
|
17.4
|
16.2
|
52-67
|
1.56
|
0.01
|
25.4
|
24.1
|
22.5
|
20.8
|
19.0
|
|
Table
11. Mean particle size distribution, bulk density,
and saturated hydraulic conductivity of control and
Aer WayTM treated plots at White
Sands.1
|
|
Depth
|
Sand
|
Silt
|
Clay
|
Bulk
density
|
Saturated
hydraulic conductivity
|
|
in
|
pct
|
pct
|
pct
|
g/cc
|
in/h
|
|
Control
|
|
0-2
|
68.38a
|
26.97a
|
4.66a
|
1.31a2
|
0.88a2
|
|
2-5
|
66.55a
|
27.11a
|
6.34a
|
--
|
--
|
|
Aer
WayTM Treated
|
|
0-2
|
67.57a
|
26.70a
|
5.74a
|
1.31a2
|
1.08a2
|
|
2-5
|
64.92a
|
27.71a
|
7.37a
|
--
|
--
|
1Means not having a letter in common differ
significantly at the 5 percent (P=0.05) level according to
the Least Significance Difference Criterion.
20-4 inches depth.
|
|
Table
12. Mean chemical characteristics of control and Aer
WayTM plots at White Sands.
|
|
Depth
|
pH
|
Organic
Matter
|
Exchangeable
cations (cmolcc/kg)
|
Base
saturation
|
|
Ca
|
Mg
|
K
|
Na
|
H
|
Al1
|
CEC2
|
|---|
|
in
|
|
pct
|
|
pct
|
|
Control
|
|
0-2
|
4.9
|
3.6
|
1.36
|
0.73
|
0.33
|
0.01
|
6.22
|
0.56
|
8.65
|
28
|
|
2-5
|
4.9
|
1.9
|
0.69
|
0.22
|
0.12
|
0.01
|
5.14
|
0.99
|
6.18
|
16
|
|
Aer
WayTM Treatment
|
|
0-2
|
4.9
|
3.2
|
1.15
|
0.62
|
0.32
|
0.01
|
6.14
|
0.67
|
8.24
|
25
|
|
2-5
|
4.9
|
1.8
|
0.67
|
0.19
|
0.10
|
0.02
|
5.37
|
1.08
|
6.35
|
15
|
|
Table
13. Effect of aeration treatments on dry matter yield of
bahiagrass, White Sands Unit, 1993.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
7/06/93
|
8/11/93
|
9/10/93
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Aer
WayTM
|
2,329
|
2,350
|
809
|
5,488
|
|
Shank
renovator
|
1,400
|
1,790
|
561
|
3,751
|
|
Disk
|
1,800
|
1,747
|
582
|
4,129
|
|
Deep
chisel 10"
|
2,235
|
2,135
|
712
|
5,082
|
|
Control
|
2,035
|
2,081
|
647
|
4,763
|
|
Mean
|
1,890
|
1,955
|
656
|
4,501
|
|
LSD(0.05%)
|
458
|
471
|
221
|
866
|
|
CV(%)
|
16.1
|
16.0
|
22.3
|
12.8
|
1Treatments applied 10/10/92.
|
Table
14. Effect of aeration treatments on yield of bahiagrass and
soil penetration resistance, Brown Loam Branch,
1993.
|
|
Treatment1
|
Harvest
date
7/15/93
|
Penetration
resistance2
|
|
7/13/93
|
11/12/93
|
|---|
|
|
lb/A
|
lb/in2
|
lb/in2
|
|
AerWayTM
|
3,373
|
378
|
390
|
|
Shank
renovator
|
2,701
|
289
|
376
|
|
Disk
|
2,477
|
339
|
369
|
|
Deep
chisel 10"
|
3,324
|
291
|
337
|
|
Control
|
3,373
|
372
|
376
|
|
Mean
|
2,957
|
334
|
369
|
|
LSD(0.05)
|
NS
|
28
|
36
|
|
CV(%)
|
18.1
|
10.8
|
5.7
|
1Treatments applied 10/15/92.
2Penetration Resistance measured with a Lang Commercial
Soil Penetrometer.
|
Table
15. Effect of aeration treatments on dry matter yield of
bahiagrass, White Sands Unit, 1994.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
4/20/94
|
5/19/94
|
6/20/94
|
7/14/94
|
7/29/94
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Aer
WayTM
|
517
|
947
|
1,098
|
679
|
666
|
3,908
|
|
Shank
renovator
|
612
|
1,029
|
1,063
|
571
|
486
|
3,759
|
|
Disk
|
859
|
963
|
1,361
|
625
|
523
|
4,331
|
|
Deep
chisel
|
753
|
1,813
|
1,487
|
539
|
575
|
5,166
|
|
Control
|
588
|
1,045
|
1,086
|
690
|
470
|
3,880
|
|
Mean
|
659
|
1,176
|
1,239
|
616
|
560
|
4,249
|
|
LSD(0.05)
|
NS
|
NS
|
NS
|
NS
|
NS
|
NS
|
|
CV(%)
|
29.4
|
43.4
|
31.7
|
23.0
|
24.4
|
20.8
|
1Treatments applied 10/14/93.
|
Table
16. Influence of timing of pasture aeration on dry matter
yield of Coastal bermudagrass, Brown Loam Branch,
1994.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
6/02/94
|
8/10/94
|
9/12/94
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Control
|
3,165
|
8,407
|
2,667
|
12,138
|
|
Spring
|
3,470
|
7,894
|
2,969
|
12,427
|
|
Summer
|
3,577
|
8,223
|
2,708
|
12,452
|
|
Spring
+ summer
|
3,122
|
7,545
|
2,676
|
11,457
|
|
Mean
|
3,334
|
8,040
|
2,755
|
12,118
|
|
LSD(0.05)
|
NS
|
NS
|
NS
|
NS
|
|
CV(%)
|
25.0
|
11.0
|
13.0
|
13.0
|
1Treatments applied: spring, 4/25/94; and summer,
8/16/94.
|
Table
17. Influence of timing of pasture aeration on dry matter
yield of Tifton 78 bermudagrass, Coastal Plain Branch,
1994.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
6/16/94
|
7/29/94
|
9/23/94
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Control
|
3,958
|
3,171
|
1,952
|
9,081
|
|
Spring
|
3,813
|
2,634
|
2,020
|
8,466
|
|
Summer
|
3,680
|
2,844
|
1,789
|
8,312
|
|
Spring
+ summer
|
3,376
|
3,030
|
1,651
|
8,057
|
|
Mean
|
3,707
|
2,920
|
1,853
|
8,479
|
|
LSD(0.05)
|
NS
|
NS
|
NS
|
NS
|
|
CV(%)
|
13.4
|
8.6
|
10.2
|
6.0
|
1Treatments applied: spring, 4/27/94; and summer,
7/30/94.
|
Table
18. Influence of timing of pasture aeration on dry matter
yield of Alicia bermudagrass, White Sands Unit,
1994.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
5/23/94
|
6/27/94
|
8/18/94
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Control
|
3,911
|
2,203
|
2,470
|
8,584
|
|
Spring
|
3,729
|
2,539
|
3,083
|
9,351
|
|
Summer
|
3,838
|
2,520
|
2,642
|
9,001
|
|
Spring
+ summer
|
4,093
|
2,427
|
2,451
|
8,971
|
|
Mean
|
3,893
|
2,422
|
2,661
|
8,976
|
|
LSD(0.05)
|
NS
|
NS
|
NS
|
NS
|
|
CV(%)
|
16.0
|
21.0
|
22.2
|
9.0
|
1Treatments applied: spring, 4/26/94; and summer,
6/29/94.
|
Table
19. Influence of timing of pasture aeration on dry matter
yield of Coastal bermudagrass, Brown Loam Branch,
1995.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
6/06/95
|
7/21/95
|
10/18/95
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Control
|
2,288
|
3,218
|
1,754
|
7,260
|
|
Spring
|
2,188
|
3,150
|
2,321
|
7,659
|
|
Summer
|
2,299
|
3,176
|
1,922
|
7,398
|
|
Spring
+ summer
|
2,558
|
3,319
|
2,259
|
8,136
|
|
Mean
|
2,333
|
3,216
|
2,064
|
7,613
|
|
LSD(0.05)
|
NS
|
NS
|
NS
|
NS
|
|
CV(%)
|
8.7
|
10.3
|
19.1
|
8.7
|
1Treatments applied: spring, 4/4/95; and summer,
6/9/95.
|
Table
20. Influence of timing of pasture aeration on dry matter
yield of Tifton 78 bermudagrass, Coastal Plain Branch,
1995.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
6/05/95
|
7/31/95
|
10/12/95
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Control
|
3,451
|
3,992
|
2,615
|
10,059
|
|
Spring
|
3,290
|
4,012
|
2,537
|
9,839
|
|
Summer
|
3,481
|
3,710
|
2,596
|
9,786
|
|
Spring
+ summer
|
3,259
|
3,649
|
2,734
|
9,641
|
|
Mean
|
3,370
|
3,841
|
2,620
|
9,831
|
|
LSD(0.05)
|
NS
|
NS
|
NS
|
NS
|
|
CV(%)
|
8.5
|
18.0
|
7.2
|
8.4
|
1Treatments applied: spring 4/10/95; and summer,
6/6/95.
|
Table
21. Influence of timing of pasture aeration on dry matter
yield of Alicia bermudagrass, White Sands Unit,
1995.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
5/29/95
|
7/14/95
|
8/17/95
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Control
|
2,614
|
3,191
|
2,011
|
7,815
|
|
Spring
|
2,584
|
3,252
|
1,972
|
7,808
|
|
Summer
|
2,493
|
3,170
|
2,125
|
7,788
|
|
Spring
+ summer
|
2,473
|
3,355
|
2,355
|
8,183
|
|
Mean
|
2,541
|
3,242
|
2,116
|
7,898
|
|
LSD(0.05)
|
NS
|
NS
|
NS
|
NS
|
|
CV(%)
|
13.0
|
8.0
|
22.0
|
11.0
|
1Treatments applied: spring, 5/5/95; and summer,
7/15/95.
|
Table
22. Influence of timing of bermudagrass pasture aeration on
soil penetration resistance, Brown Loam Branch,
1994.
|
|
Treatment
|
Penetration
resistance1
|
|
4/25/94
|
6/15/94
|
|---|
|
|
lb/in2
|
lb/in2
|
|
Check
|
532
|
501
|
|
Spring
|
533
|
485
|
|
Summer
|
548
|
504
|
|
Spring
+ summer
|
521
|
503
|
|
Mean
|
534
|
498
|
|
LSD(0.05)
|
NS
|
NS
|
|
CV(%)
|
3.1
|
5.2
|
1Penetration resistance measured with a Commercial Lang
Penetrometer.
|
Table
23. Dry matter yield of Coastal bermudagrass as affected by
timing of aeration, Brown Loam Branch, 1995.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
6/6/95
|
7/21/95
|
10/18/95
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Spring
only
|
2,609
|
2,672
|
1,943
|
7,224
|
|
Spring
+ every harvest
|
2,680
|
3,237
|
2,033
|
7,950
|
|
Spring
+ fall
|
3,050
|
3,062
|
1,979
|
8,091
|
|
Spring
+ second harvest
|
2,927
|
2,675
|
2,117
|
7,119
|
|
Spring
2X
|
2,700
|
3,325
|
2,109
|
8,134
|
|
Control
|
3,304
|
3,153
|
2,089
|
8,546
|
|
Mean
|
2,878
|
3,020
|
2,045
|
7,944
|
|
LSD(0.05)
|
NS
|
NS
|
NS
|
NS
|
|
CV(%)
|
16.0
|
12.0
|
20.5
|
10.9
|
1Treatments applied: spring, 4/4/95; summer, 6/9/95; and
after second harvest, 7/31/95.
|
Table
24. Dry matter yield of Tifton 78 bermudagrass as affected
by timing of aeration, Coastal Plain Branch,
1995.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
6/5/95
|
7/31/95
|
10/12/95
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Spring
only
|
2,891
|
3,647
|
2,707
|
9,244
|
|
Spring
+ every harvest
|
2,663
|
3,432
|
2,707
|
8,802
|
|
Spring
+ fall
|
2,964
|
3,783
|
2,668
|
9,415
|
|
Spring
+ second harvest
|
3,063
|
3,042
|
2,417
|
8,522
|
|
Spring
2X
|
2,479
|
3,198
|
2,610
|
8,287
|
|
Control
|
2,842
|
3,627
|
2,745
|
9,214
|
|
Mean
|
2,817
|
3,455
|
2,643
|
8,914
|
|
LSD(0.05)
|
349
|
NS
|
NS
|
NS
|
|
CV(%)
|
8.2
|
17.2
|
15.1
|
10.0
|
1Treatments applied: spring, 4/10/95; summer, 6/6/95; and
after second harvest, 8/1/95.
|
Table
25. Dry matter yield of Alicia bermudagrass as affected by
timing of aeration, White Sands Unit, 1995.
|
|
Treatment1
|
Harvest
date
|
Total
|
|
5/29/95
|
7/14/95
|
8/17/95
|
|---|
|
|
lb/A
|
lb/A
|
lb/A
|
lb/A
|
|
Spring
only
|
3,282
|
2,360
|
1,541
|
7,184
|
|
Spring
+ every harvest
|
3,764
|
2,360
|
1,270
|
7,395
|
|
Spring
+ fall
|
3,853
|
2,278
|
1,553
|
7,684
|
|
Spring
+ second harvest
|
3,786
|
2,347
|
1,506
|
7,639
|
|
Spring
2X
|
3,159
|
2,141
|
1,635
|
6,939
|
|
Control
|
3,473
|
1,880
|
1,529
|
6,882
|
|
Mean
|
3,553
|
2,228
|
1,505
|
7,286
|
|
LSD(0.05)
|
NS
|
NS
|
NS
|
NS
|
|
CV(%)
|
15.4
|
15.7
|
15.0
|
8.7
|
1Treatments applied: spring, 5/5/95; summer, 5/29/95; and
after second harvest, 7/14/95.
|
Table
26. Average first harvest dry matter yield of aerated and
nonaerated bermudagrass varieties, Brown Loam Branch,
1994.
|
|
Treatment1
|
Bermudagrass
varieties
harvested 5/5/94
|
|
|
lb/A
|
|
Aer
WayTM
|
1,884
|
|
Not
Aerated
|
2,301
|
|
LSD(0.05)
|
195
|
|
CV(%)
|
21.5
|
1Aeration performed on 2/22/94, 5/5/94, and 8/10/94.
|
Table
27. Total dry matter yield of aerated and nonaerated
bermudagrass variety plots, Brown Loam Branch,
1994.
|
|
Treatment
|
Bermudagrass
varieties
(total of three harvests)
|
|
|
lb/A
|
|
Aer
WayTM
|
13,219
|
|
Not
Aerated
|
13,503
|
|
LSD(0.05)
|
NS
|
1Aeration performed on 2/22/94, 5/5/94, and
8/10/94.