Arizona Upland Cotton Variety
Testing Program, 2003
S. Husman, R. Norton, E. Norton, P. Clay, M. Zerkoune, K. White
University of Arizona Cooperative Extension
Abstract
Each year the University of Arizona conducts variety trials across
the state to evaluate the performance of Upland cotton varieties.
These tests provide unbiased data on the performance of varieties
when tested side-by-side under typical production practices. In
2003, a total of 11 trials were planted. Two in the Yuma region
(Yuma County), two in the western region (La Paz and Mohave
counties), four in the central region (Maricopa and Pinal
counties), one in the southern region (Pima county), and two in the
eastern region (Graham, Greenlee, and Cochise counties). We
tested eight to fourteen commercially available varieties at each
test site. This article presents the results of the 2003 variety tests
conducted at each location.
Introduction
Each year the University of Arizona conducts variety trials across the state to evaluate the performance of upland
cotton varieties. These trials provide many segments of the cotton industry with unbiased data on yield, fiber
quality, and agronomic performance of commercially available varieties when tested side-by-side under typical
production practices.
The Arizona Upland Cotton Variety Trial is our most intensive testing program. The tests in this program are
conducted at several locations throughout the cotton producing regions of the state, usually on grower’s fields. The
test plots are large-scale “strip plots” which are replicated and randomized using proper field-plot techniques.
Several seed companies enter the varieties they feel have the best chance of producing high yields of good quality
fiber. The results of these trials are the closest possible to obtaining “on-farm” experience with a particular variety.
The purpose of this report is to present the results of the 2003 tests conducted in the following regions: Yuma,
western, central, southern, and eastern, Arizona.
Arizona Cotton Report (P-138) May 2004
91
Materials and Methods
Locations and varieties: Trials were planted at eleven locations in 2003 – two in the Yuma region (Somerton and
Wellton), two in the western region (Mohave Valley and Parker), four in the central region (Buckeye, Stanfield,
Maricopa, and Coolidge), one in the southern region (Marana), and two in the eastern region (Thatcher, and Kansas
Settlement). Eight to fourteen varieties were planted at each site. Varieties included in the 2003 tests were
submitted to the university by the cooperating seed companies that included Deltapine, Stoneville, Buttonwillow
Research, the Arizona Cotton Grower’s Association, AgriPro, CPCSD, FiberMax, Salcot Seed Company, and New
Mexico State University.
Experimental design and test protocols: Most tests were conducted on grower-cooperator fields. All cultural
practices, including planting date, fertilizer regimes, pest control, irrigation, defoliation, and harvest date were made
by the cooperator. The tests at Maricopa and Marana were located on University of Arizona Experimental stations,
but production practices typical for the area were used in making all cultural decisions. Insect control regimes were
followed for conventional varieties in all tests. Plots were a minimum of 4 rows wide (38 to 40 inch spacing), and
extended the full length of the irrigation run. All treatments (varieties) were arranged in a randomized complete
block design with three or four replications. At least two rows per plot were machine harvested and the seed cotton
from each plot was weighed at the field. Sub-samples of the harvested seed cotton were ginned for turnout and lint
yield was calculated from the seed cotton and turnout data. Lint from the grab samples was sent to the USDA
classing office for HVI fiber quality analysis. Average premium or discount on the lint for each variety was
determined by applying the CCC loan schedule to the HVI data collected from each plot. Price was determined by
using the base value for Arizona (52.0 cents per pound) and adding or subtracting the proper premium or discount to
the base value. Value per acre was determined by multiplying lint yield by the price per pound.
Results
Variety selection within the last five years has become more complicated with the increasing importance of fiber
quality in the market and with the advent of transgenic technology. In our tests, for example, the value of the crop
depended on both lint yield and fiber quality. The highest yielding varieties did not always produce the highest
value per acre (See Tables).
The introduction of high yielding varieties with transgenic traits has been a great benefit to Arizona growers.
However, new conventional varieties are also being developed and released.
Many sources of information on variety performance are publicly available to the industry. The data presented in
this report is a good source of information on the performance of these varieties, and they represent a solid staring
point for determining the actual performance of a given variety on each individual farm. Other sources of
information should be considered when selecting varieties. Seed companies also provide performance data for their
varieties. Other growers in the area may have experience with a particular variety. If possible, more than one year
of data should be considered in evaluating the performance of a particular variety.
Once the decision to try a new variety is made, incorporating that new variety into each cultural program should
proceed in increments. Growers should test it on a limited scale at first to determine how the variety performs on
their own farm and to gain experience on the cultural needs of the variety.
Acknowledgments
The valuable cooperation, land, and resources provided by the following cooperators are greatly appreciated: CRIT
Farms, Bruce Heiden, Dennis Layton, Marlatt Brothers, Paul Ollerton, John Peach, Milton Schmitt, Lee Smith, and
Del Wakimoto, and the UofA Experiment stations at Maricopa and Marana. The support and cooperation provided
by the participating seed companies – Delta and Pine Land Co., Stoneville, Buttonwillow Research, the Arizona
Cotton Grower’s Association, AgriPro, CPCSD, FiberMax, Salcot Seed Company, and New Mexico State
University is gratefully acknowledged.
Arizona Cotton Report (P-138) May 2004
92
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Mohave, AZ
Planting Date
Total Number of Irrigations
Company
Variety
1 MAY 2003
Lint Yield
Final Irrigation Date
Total N Applied
Percent
Lint
Micronaire
(lbs/Acre)
Stoneville
Delta and Pine
Stoneville
Delta and Pine
Delta and Pine
Salcot
FiberMax
ACGA
LSD0.052
OSL3
CV (%)4
ST5599BR
DP448B
ST5303R
DP555BR
DP449BR
SCX-7
FM960BR
ACG3601
1
961 a
944 ab
943 ab
867 ab
814 bc
686 c
531 d
387 e
143
0.0001
12.7
29.8 a
28.0 ab
28.5 a
31.0 a
30.2 a
29.0 a
28.0 ab
25.0 b
3.2
0.0305
7.6
4.7 a
4.6 ab
4.7 ab
4.4 bc
4.6 ab
4.2 c
4.5 ab
3.9 d
0.3
0.0001
4.2
Harvest Date
General Soil Texture
265 lbs. N
Fiber
Length
(100ths)
1.08 de
1.11 dc
1.11 bc
1.10 cd
1.14 ab
1.12 abc
1.07 e
1.14 a
0.03
0.0002
1.6
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
35.0 cd
35.7 bc
35.7 bc
35.2 cd
36.5 ab
36.5 ab
34.5 d
37.03 a
0.8
0.0001
1.6
27.9 d
28.5 d
31.0 bc
29.2 cd
30.6 bc
31.5 b
30.5 bc
33.6 a
1.8
0.0001
4.1
Uniformity
Index
79.5 de
80.0 cd
81.8 a
78.8 e
81.0 ab
80.5 bc
80.8 bc
81.0 ab
1.0
0.0001
0.8
21 OCT 2003
Sandy loam
Premium/
Discount5
(points)
($/acre)
176
401
429
353
458
485
325
506
515
529
531
482
461
390
293
221
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
3
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
Arizona Cotton Report (P-138) May 2004
93
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Parker, AZ
Planting Date
Total Number of Irrigations
Company
Variety
Delta and Pine
Stoneville
Delta and Pine
Stoneville
Salcot
Delta and Pine
ACGA
FiberMax
LSD0.052
OSL3
CV (%)4
DP449BR
ST5303R
DP555BR
ST5599BR
SCX-7
DP448B
ACG3601
FM960BR
15 MAR 2003
9 Irrigations
Lint Yield
Final Irrigation Date
Total N Applied
Percent
Lint
Micronaire
33.5 bc
33.0 cd
36.0 a
34.3 b
32.8 cd
32.3 d
30.8 e
33.0 cd
1.2
0.0001
2.4
5.5 ab
5.5 ab
5.4 bc
5.4 bc
5.3 cd
5.2 d
5.6 a
5.2 d
0.2
0.0001
2.1
(lbs/Acre)
842 a1
815 a
804 a
791 a
781 ab
734 ab
669 bc
621 c
112
0.0060
10.1
14 SEP 2003
125 lbs. N
Fiber
Length
(100ths)
1.06
1.06
1.04
1.03
1.07
1.06
1.08
1.06
NS
0.0945
2.2
Harvest Date
General Soil Texture
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
34.0
33.8
33.3
33.0
34.5
34.0
34.8
34.0
NS
0.1253
2.5
29.0 cd
30.0 bc
27.4 de
26.5 e
31.0 ab
28.0 de
33.0 a
31.4 ab
1.9
0.0001
4.4
10 OCT 2003
Silt loam
Uniformity
Index
Premium/
Discount5
(points)
($/acre)
80.3 cd
82.0 a
79.5 d
79.8 cd
81.3 ab
80.5 bc
81.8 a
81.5 a
1.0
0.0001
0.8
-316
-323
-531
-557
-101
-219
-131
-170
413
398
376
365
398
367
338
313
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
3
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
Arizona Cotton Report (P-138) May 2004
94
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Somerton, AZ
Planting Date
Total Number of Irrigations
Company
Variety
Stoneville
Stoneville
Delta and Pine
Delta and Pine
Buttonwillow
Stoneville
FiberMax
AgriPro
Salcot
FiberMax
Delta and Pine
ACGA
LSD0.052
OSL3
CV (%)4
ST5599BR
ST4892BR
DP444BR
DP449BR
BR303
ST5303R
FM989BR
AP7126
SCX-7
FM960BR
DP555BR
ACG3601
1 APR 2003
8 Irrigations
Lint Yield
Final Irrigation Date
Total N Applied
Percent
Lint
Micronaire
33.8 abc
34.3 ab
34.7 ab
32.8 bc
29. de
32.9 bc
33.3 bc
31.4 cd
31.3 cd
32.8 bc
35.9 a
28.4 e
2.6
0.0001
4.5
5.3 abc
5.5 a
4.8 f
5.4 ab
4.9 ef
5.4 abc
5.1 cde
5.2 bcd
5.0 def
5.3 abcd
5.3 abcd
5.1 cde
0.3
0.0007
3.2
(lbs/Acre)
1370 a1
1318 ab
1260 ab
1248 abc
1179 abcd
1175 abcd
1119 bcde
1049 cdef
1044 cdef
1021 def
925 ef
893 f
199
0.0009
10.0
9 AUG 2003
127 lbs. N
Fiber
Length
(100ths)
1.07 ef
1.10 cde
1.07 ef
1.08 def
1.18 a
1.08 def
1.06 f
1.14 ab
1.11 cd
1.11 cd
1.08 def
1.13 bc
0.03
0.0001
1.9
Harvest Date
General Soil Texture
Fiber Quality
Staple
Fiber
Length
Strength
(32nds)
(g/tex)
34.3 fg
35.3 cdef
34.3 fg
34.7 efg
37.7 a
35.0 defg
34.0 g
36.7 ab
36.0 bcd
35.7bcde
35.0 defg
36.3 bc
1.2
0.0001
2.0
29.3 def
29.6 cdef
27.8 f
29.2 ef
31.3 abcde
31.9 abcd
28.2 f
30.9 bcde
32.0 abc
32.4 ab
29.1 ef
33.8 a
2.6
0.0016
5.0
15 SEP 2003
Sandy loam
Uniformity
Index
Premium/
Discount5
(points)
($/acre)
81.3 bc
82.7 ab
82.0 abc
81.0 dc
82.3 abc
83.0 a
82.3 abc
81.7 abc
82.0 abc
82.3 abc
81.0 cd
82.7 ab
1.3
0.0018
0.9
-165
-80
265
-170
372
-55
-253
75
303
5
-123
90
693
674
689
627
658
605
552
554
623
531
470
473
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
3
Arizona Cotton Report (P-138) May 2004
95
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Wellton, AZ
Planting Date
Total Number of Irrigations
Company
Variety
20 MAR 2003
7 Irrigations
Lint Yield
Final Irrigation Date
Total N Applied
Percent
Lint
Micronaire
(lbs/Acre)
Stoneville
Delta and Pine
Delta and Pine
Stoneville
Buttonwillow
Salcot
AgriPro
Stoneville
FiberMax
FiberMax
Delta and Pine
ACGA
LSD0.052
OSL3
CV (%)4
ST5599BR
DP449BR
DP555BR
ST4892BR
BR303
SCX-7
AP7126
ST5303R
FM989BR
FM960BR
DP444BR
ACG3601
2015
1864
1797
1744
1741
1677
1608
1595
1594
1533
1442
1327
NS
0.0579
7.7
34.2
33.8
33.7
32.6
32.1
32.7
32.1
33.9
32.9
32.6
29.2
29.0
NS
0.6673
6.4
1
4.7 abc
4.5 abcd
4.4 bcd
4.8 ab
4.3 cde
4.4 cde
4.3 def
4.5 abcd
4.3 de
4.3 cde
4.0 e
4.9 a
0.4
0.0197
3.8
24 JUL 2003
165 lbs. N
Fiber
Length
(100ths)
Harvest Date
General Soil Texture
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
1.08 de
1.13 bcd
1.07 de
1.09 de
1.22 a
1.11 bcd
1.15 b
1.09 cde
1.09 bcde
1.05 e
1.11 bcd
1.14 bc
0.05
0.0013
2.1
35.0 bcd
36.0 bc
34.5 bc
35.0 bcd
38.5 a
35.5 bc
36.5 b
34.5 cd
35.5 bc
33.5 d
36.0 bc
36.5 b
1.6
0.0035
2.1
27.7
30.4
26.4
27.3
28.8
27.9
29.1
30.9
28.2
28.8
26.3
29.8
NS
0.0656
4.5
Uniformity
Index
80.0 cd
81.5 ab
78.5 e
81.5 ab
81.0 bc
80.0 cd
81.5 ab
82.5 a
79.5 de
80.0 cd
88.5 bcd
81.5 ab
1.4
0.0029
0.8
3 SEP 2003
Silt loam
Premium/
Discount5
(points)
($/acre)
365
433
205
360
420
395
415
363
388
88
445
470
1121
1049
949
970
978
939
904
887
891
812
814
758
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
3
Arizona Cotton Report (P-138) May 2004
96
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Buckeye, AZ
Planting Date
15 APR 2003
Final Irrigation Date
Total Number of Irrigations
21 Irrigations
Total N Applied
Company
Variety
Delta and Pine
Delta and Pine
Delta and Pine
FiberMax
Delta and Pine
Stoneville
Stoneville
Stoneville
Salcot
FiberMax
ACGA
Buttonwillow
LSD0.052
OSL3
CV (%)4
DP448B
DP555BR
DP449BR
FM960BR
DP33B
ST5599BR
ST4892BR
ST5303R
SCX-7
FM989BR
AG3601
BW303
Lint Yield
Percent
Lint
Micronaire
31.4 bcd
34.6 a
32.1 b
31.7 bc
29.5 e
31.9 bc
32.3 b
30.3 de
30.8 cd
30.2 de
28.2 f
28.0 f
1.2
0.0001
2.7
4.4 d
4.9 b
4.9 cb
4.8 bc
4.7 bc
4.9 bc
5.3 a
5.2 a
4.7 bc
4.8 bc
4.7 c
4.7 cb
0.2
0.0001
2.8
(lbs/Acre)
1792 a1
1758 ab
1677 b
1494 c
1483 c
1425 cd
1336 de
1312 e
1300 ef
1248 efg
1225 fg
1200 g
97
0.0001
4.7
25 SEP 2003
10 tons manure/ac,
50 lbs. N
Fiber
Length
(100ths)
1.10 c
1.07 d
1.10 c
1.08 cd
1.09 cd
1.04 e
1.06 de
1.09 cd
1.10 bc
1.08 cd
1.13 ab
1.15 a
0.02
0.0001
1.7
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
35.2 bc
34.3 cde
35.2 bc
35.0 c
34.8 cd
33.3 e
33.8 ed
34.8 cd
35.2 bc
34.8 cd
36.2 ab
36.5 a
1.1
0.0001
2.1
28.5 cde
28.5 cde
30.1 bcd
34.2 a
30.0 bcde
27.7 de
27.2 e
31.0 b
31.7 b
30.4 bc
31.3 b
31.0 b
2.5
0.0001
5.7
Harvest Date
General Soil Texture
8 DEC 2003
Silt loam
Uniformity
Index
Premium/
Discount5
(points)
($/acre)
80.5 bc
79.5 c
80.8 b
81.2 ab
80.5 bc
79.5 c
80.8 b
82.3 a
81.0 b
81.0 b
81.0 b
80.5 bc
1.1
0.0009
0.9
344
70
369
308
269
-134
-369
-79
310
271
406
245
993
928
934
822
812
721
646
672
689
684
687
653
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
3
Arizona Cotton Report (P-138) May 2004
97
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Stanfield, AZ
Planting Date
Total Number of Irrigations
Company
Variety
23 APR 2003
9 Irrigations
Lint Yield
Final Irrigation Date
Total N Applied
Percent
Lint
Micronaire
(lbs/Acre)
Stoneville
Delta and Pine
Stoneville
Delta and Pine
Salcot
Buttonwillow
FiberMax
Stoneville
ACGA
Delta and Pine
FiberMax
LSD0.052
OSL3
CV (%)4
ST5599BR
DP449BR
ST4892BR
DP448B
SCX-7
BR303
FM960BR
ST5303R
AG3601
DP555BR
FM989BR
1
1264 a
1250 a
1220 a
1155 ab
1061 bc
1017 c
982 cd
974 dc
966 cd
955 cd
885 d
123
0.0001
8.0
34.1 c
33.5 d
34.9 b
31.4 I
32.5 f
30.3 j
33.3 e
31.9 h
29.1 k
36.5 a
32.0 g
----
4.8 b
4.8 b
5.2 a
4.3 c
4.2 c
4.6 b
4.6 b
4.3 c
4.0 d
4.0 d
4.7 b
0.3
0.0001
3.9
13 SEP 2003
199 lbs. N
Fiber
Length
(100ths)
1.10 b
1.12 b
1.11 b
1.12 b
1.13 b
1.22 a
1.09 b
1.13 b
1.20 a
1.10 b
1.10 b
0.04
0.0001
1.9
Harvest Date
General Soil Texture
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
35.3 b
36.0 b
35.6 b
36.3 b
36.3 b
39.0 a
35.3 b
36.3 b
38.3 a
35.6 b
35.6 b
1.0
0.0001
1.7
29.5 e
32.5 abc
30.7 de
30.3 de
32.5 abc
31.9 bcd
33.2 ab
32.9 abc
34.0 a
30.5 de
31.3 cd
1.7
0.0003
3.1
Uniformity
Index
79.3 c
81.0 ab
81.3 ab
80.0 bc
80.6 bc
81.0 bc
80.3 bc
82.3 a
81.3 ab
79.3 c
80.3 bc
1.5
0.0127
1.1
4 NOV 2003
Sandy loam
Premium/
Discount5
(points)
($/acre)
253
350
27
420
472
452
413
457
485
395
373
669
683
615
625
581
587
533
551
524
525
506
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
3
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
Arizona Cotton Report (P-138) May 2004
98
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Maricopa, AZ
Planting Date
Total Number of Irrigations
Company
Variety
Delta and Pine
Stoneville
Delta and Pine
ACGA
Stoneville
Stoneville
Salcot
Delta and Pine
FiberMax
Buttonwillow
FiberMax
LSD0.052
OSL3
CV (%)4
DP449BR
ST5599BR
DP448B
AG3601
ST4892BR
ST5303R
SCX-7
DP555BR
FM960BR
BR303
FM989BR
18 APR 2003
11 Irrigations
Lint Yield
Final Irrigation Date
Total N Applied
Percent
Lint
Micronaire
33.9
33.7
32.8
30.9
34.8
32.7
32.6
36.0
32.9
29.8
32.2
----
5.1 a
5.3 a
5.0 a
5.3 a
5.2 a
5.1 a
5.1 a
5.0 a
5.3 a
5.2 a
5.4 a
NS
0.5301
4.7
(lbs/Acre)
1532 a1
1430 ab
1396 ab
1340 bc
1337 bc
1315 bc
1307 bc
1240 cd
1133 d
1121 d
1098 d
152
0.0001
6.9
25 AUG 2003
180 lbs. N
Fiber
Length
(100ths)
1.10 a
1.06 a
1.08 a
1.11 a
1.10 a
1.08 a
1.10 a
1.10 a
1.08 a
1.11 a
1.08 a
NS
0.7182
3.3
Harvest Date
General Soil Texture
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
35.7 a
34.0 a
34.3 a
35.7 a
35.3 a
34.7 a
35.7 a
35.3 a
34.7 a
35.3 a
34.7 a
NS
0.7361
3.5
32.6 a
29.8 a
31.4 a
31.6 a
32.3 a
32.1 a
31.0 a
31.7 a
32.0 a
31.7 a
31.3 a
NS
0.8288
6.3
7 NOV 2003
Loam
Uniformity
Index
Premium/
Discount5
(points)
($/acre)
80.7 a
80.7 a
80.7 a
81.0 a
80.7 a
81.3 a
80.3 a
81.0 a
80.0 a
81.7 a
80.7 a
NS
0.5899
1.1
120
-277
62
-15
75
-32
148
2
-107
83
-148
817
704
734
695
700
680
699
645
577
595
555
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
3
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
Arizona Cotton Report (P-138) May 2004
99
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Coolidge, AZ
Planting Date
Total Number of Irrigations
Company
Variety
Delta and Pine
Delta and Pine
Stoneville
Delta and Pine
Stoneville
Salcot
Stoneville
Buttonwillow
ACGA
FiberMax
FiberMax
LSD0.052
OSL3
CV (%)4
DP448B
DP555BR
ST5599BR
DP449BR
ST4892BR
SCX-7
ST5303R
BR303
AG3601
FM960BR
FM989BR
11 APR 2003
10 Irrigations
Lint Yield
Final Irrigation Date
Total N Applied
Percent
Lint
Micronaire
34.6
37.5
35.9
34.4
36.9
33.0
34.0
31.5
30.7
34.0
32.4
----
4.9cdef
4.6 f
5.3 ab
4.7 ef
5.5 a
4.7 ef
5.2 abc
4.7 def
5.1 bcd
5.0 bcde
5.0 bcde
0.4
0.0001
5.0
(lbs/Acre)
1475 a1
1465 ab
1456 ab
1450 ab
1384 bc
1363 c
1342 c
1334 c
1190 d
1189 d
1147 d
82
0.0001
4.2
1 SEP 2003
280 lbs. N
Fiber
Length
(100ths)
1.11 de
1.12 bcd
1.06 g
1.22 bcd
1.08 fg
1.14 bc
1.11 cde
1.19 a
1.15 b
1.09 efg
1.10 def
0.03
0.0001
1.7
Harvest Date
General Soil Texture
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
35.5 bcd
36.5 ab
34.0 e
36.0 abc
34.7 de
36.5 ab
36.0 abc
37.0 a
37.0 a
35.0 cde
35.7 bcd
1.2
0.0002
2.3
29.8 de
30.6 cd
29.2 e
31.9 bc
29.6 de
32.6 ab
32.8 ab
32.8 ab
33.8 a
33.1 ab
32.1 b
1.3
0.0001
2.8
24 OCT 2003
Loam
Uniformity
Index
Premium/
Discount5
(points)
($/acre)
80.0 ef
80.2 def
79.5 f
81.0 bcd
81.0 bcd
81.0 bcd
82.7 a
81.7 b
81.2 bc
81.5 b
80.5 cde
0.9
0.0001
0.7
230
371
-289
789
-154
496
41
300
294
109
189
801
815
716
825
699
776
704
734
656
631
617
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
3
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
Arizona Cotton Report (P-138) May 2004
100
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Marana, AZ
Planting Date
Total Number of Irrigations
Company
Variety
9 APR 2003
8 Irrigations
Lint Yield
Final Irrigation Date
Total N Applied
Percent
Lint
Micronaire
(lbs/Acre)
Delta and Pine
Stoneville
Stoneville
Delta and Pine
Delta and Pine
Salcot
FiberMax
ACGA
Buttonwillow
LSD0.052
OSL3
CV (%)4
DP449BR
ST5599BR
ST5303R
DP448B
DP555BR
SCX-7
FM960BR
AG3601
BR303
1
1230 a
1223 a
1220 a
1185 ab
1144 b
1127 bc
1125 bc
1065 cd
1050 d
67
0.0001
3.4
35.1 d
36.9 b
34.9 e
32.7 h
38.7 a
32.9 g
35.6 c
32.9 g
33.0 f
----
5.2 bc
5.2 bc
5.4 a
5.0 ef
5.0 de
4.9 f
5.1 cd
5.2 b
5.0 de
0.1
0.0001
1.6
25 AUG 2003
136 lbs. N
Fiber
Length
(100ths)
1.09 bc
1.06 c
1.06 c
1.07 bc
1.07 bc
1.10 b
1.10 b
1.13 a
1.15 a
0.03
0.0001
1.8
Harvest Date
General Soil Texture
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
35.0 cd
34.2 de
34.0 e
34.7 cde
24.7 cde
35.5 bc
35.0 cd
36.2 ab
37.0 a
0.9
0.0001
1.7
29.3 bc
28.7 bc
29.8 bc
27.4 d
27.5 d
30.0 bc
31.4 a
31.8 a
30.5 ab
1.4
0.0001
3.3
Uniformity
Index
80.2 cde
80.7 bcd
81.7 a
79.7 e
78.5 f
80.0 ed
81.0 abc
81.2 ab
80.0 de
0.9
0.0001
0.8
30 OCT 2003
Clay loam
Premium/
Discount5
(points)
($/acre)
-19
-72
-298
228
-6
434
50
0
176
637
624
598
643
594
635
591
554
564
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
3
Arizona Cotton Report (P-138) May 2004
101
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Thatcher, AZ
Planting Date
Total Number of Irrigations
Company
Variety
28 APR 2003
7 Irrigations
Lint Yield
Final Irrigation Date
Total N Applied
Percent
Lint
Micronaire
(lbs/Acre)
FiberMax
Stoneville
Delta and Pine
FiberMax
Delta and Pine
Delta and Pine
Salcot
Delta and Pine
ACGA
Stoneville
CPCSD
FiberMax
LSD0.052
OSL3
CV (%)4
FM991BR
ST5303R
DP655BR
FM991R
DP5690R
DP555BR
SCX-7
DP449BR
AG3601
ST5599BR
Riata
FM989BR
1
1690 a
1661 a
1661 ab
1632 abc
1618 abc
1593 abc
1517 bcd
1496 cde
1398 def
1395 def
1363 ef
1292 f
144
0.0001
6.0
36.0 a
35.8 a
35.0 a
34.1 a
35.5 a
36.0 a
33.9 a
34.8 a
32.3 a
34.8 a
35.5 a
32.3 a
NS
0.1218
5.0
4.3 a
4.4 a
4.4 a
4.5 a
4.7 a
4.4 a
4.4 a
4.3 a
5.1 a
4.3 a
4.7 a
4.3 a
NS
0.0797
5.4
26 SEP 2003
83 lbs. N
Fiber
Length
(100ths)
1.10 a
1.04 a
1.07 a
1.05 a
1.07 a
1.06 a
1.08 a
1.10 a
1.08 a
1.07 a
1.08 a
1.08 a
NS
0.1035
2.5
Harvest Date
General Soil Texture
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
35.2 a
33.5 a
34.5 a
33.5 a
34.5 a
34.2 a
34.5 a
35.2 a
34.5 a
33.5 a
34.5 a
34.7 a
NS
0.2394
2.7
32.6 a
30.3 a
30.5 a
28.8 a
30.9 a
30.1 a
31.0 a
31.7 a
32.0 a
30.8 a
31.8 a
31.9 a
NS
0.1690
5.2
Uniformity
Index
81.2 ab
80.0 abc
80.5 abc
79.0 c
81.2 ab
79.7 bc
80.0 abc
81.5 ab
81.0 ab
80.2 abc
81.7 a
81.5 ab
1.8
0.0488
1.4
30 OCT 2003
Clay loam
Premium/
Discount5
(points)
($/acre)
85
81
334
430
281
231
360
423
-13
280
354
380
864
877
920
952
886
863
844
841
725
766
757
721
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound.
2
3
Arizona Cotton Report (P-138) May 2004
102
University of Arizona
Cooperative Extension
2003 Upland Cotton Variety Trial Results
Kansas Settlement, AZ
Planting Date
Total Number of Irrigations
Company
Variety
FiberMax
FiberMax
Stoneville
Stoneville
Salcot
FiberMax
CPCSD
NMSU
CPCSD
CPCSD
Delta and Pine
ACGA
Delta and Pine
NMSU
LSD0.052
OSL3
CV (%)4
FM991BR
FM991R
ST5303R
ST5599BR
SCX-7
FM989BR
Riata
1517-99
Nova
Sierra
DP451BR
AG3601
PM1199R
1517-95
10 APR 2003
Final Irrigation Date
Center Pivot
Lint Yield
Total N Applied
Percent
Lint
Micronaire
36.3
35.7
38.3
37.5
35.5
37.2
37.7
32.7
37.2
34.6
32.9
33.0
36.2
32.7
----
3.9
3.8
4.5
3.8
3.6
4.1
4.0
3.8
4.5
4.0
4.1
3.7
4.6
4.0
----
(lbs/Acre)
1112 a1
999 ab
907 bc
879 bc
855 bcd
848 bcd
817 cd
798 cde
793 cde
735 cde
709 de
697 de
687 de
632 e
170
0.0001
15.0
10 SEP 2003
Harvest Date
104 lbs. N
Fiber
Length
(100ths)
1.12
1.11
1.07
1.03
1.09
1.00
1.12
1.16
1.11
1.12
1.06
1.07
1.06
1.42
----
General Soil Texture
Fiber Quality
Staple
Fiber
Length Strength
(32nds)
(g/tex)
36.0
36.0
34.0
33.0
35.0
32.0
36.0
37.0
36.0
36.0
34.0
34.0
34.0
37.0
----
32
31
31
28
30
27
32
33
33
31
27
31
28
33
----
11 NOV 2003
Sandy loam
Uniformity
Index
Premium/
Discount5
(points)
($/acre)
81.0
79.0
83.0
80.0
81.0
79.0
82.0
82.0
83.0
82.0
80.0
97.0
83.0
83.0
----
505
415
300
300
400
-280
505
535
525
5105
235
260
215
540
634
561
497
451
479
417
466
458
454
419
385
381
372
363
Value6
1
Means followed by the same letter are not significantly different according to a Fisher’s LSD means separation test.
LSD: Least Significant Difference.
OSL: Observed Significance Level.
4
CV: Coefficient of Variation.
5
Average premium or discount applied to the lint based on CCC loan schedule.
6
Value of lint per acre based on CCC loan schedule of discounts and premiums and assuming a base value of 52.00 cents per pound
2
3
Arizona Cotton Report (P-138) May 2004
103