Yield Stability of Cotton Varieties

— Written By

One is tempted to want to look at the nearest cotton variety test and place a lot of emphasis on those results for variety selection for the coming year. What happened at a particular test is not the best predictor of what will do best next year. For example, if I want to predict what varieties will perform best in the coming year at Rocky Mount, I have found that the results averaged over all locations is a better predictor than the previous years results at Rocky Mount.

The yeild stability of a variety is how well adapted the variety is to a number of environments, all of which may be possible for the coming year. Some varieties will do well in a certain environment and then bomb in other environments. A variety with good yeild stability will perform well across most environments. The table below, compiled by Dr. Mike Jones of Clemson, list the percentage of times a variety ranked in the top 25%, top 50% and top 75% for yield of all varieties. The data is presented averaged over North Carolina, South Carolina and Georgia (in bold) and by each state.

                   Lint Yield Rankings of Selected Varieties in Southeast University Variety Trials (North Carolina, South Carolina and Georgia) – 1998 to 2013 (data compiled by Mike Jones, Clemson University)

# of

Trials

% of Trials Ranked in Top 25% in Yield

% of Trials Ranked in Top 50% in Yield

% of Trials Ranked in Top 75% in Yield

Variety

SE

NC

SC

GA

SE

NC

SC

GA

SE

NC

SC

GA

PX 444413WRF

8

88

88

100

100

100

100

PHY 499WRF

129

74

67

70

78

95

93

96

94

99

100

100

98

DPL 1028B2RF

65

65

60

54

79

88

 87

81

96

98

100

96

100

MON 13R352B2R2

17

65

25

80

75

82

75

100

75

94

75

100

100

DPL 555BR1

217

63

71

55

71

86

 94

80

91

94

100

 92

 96

PX 444414WRF

22

59

25

60

75

91

75

90

100

95

100

90

100

PX 300310WRF

17

59

50

20

88

76

75

60

88

82

75

80

88

DPL 1137B2RF

99

58

56

60

57

84

72

89

85

98

100

100

 96

DPL 1252B2RF

71

58

60

54

59

75

67

79

75

92

87

96

 91

ST 4747GLB2

22

55

50

50

63

59

75

50

63

100

100

100

100

DPL 1050B2RF

69

54

50

56

53

83

67

80

91

94

92

92

97

PX 554010WRF

13

54

20

75

69

20

100

85

60

100

PX 553840WRF

17

53

100

40

38

71

100

80

50

76

100

80

63

DPL 0912B2RF

91

51

56

54

45

78

89

77

74

93

89

 94

95

NG 1511B2RF

98

49

60

50

46

73

80

78

69

95

90

100

 92

DPL 444BR1

135

46

 76

39

39

67

 88

64

61

87

 96

 82

 92

PHY 333WRF

29

45

43

36

63

72

43

79

88

90

86

86

100

DPL 0935B2RF

78

45

38

34

56

68

54

59

81

90

92

 93

 86

ST 5599BR1

179

44

64

31

52

72

85

59

83

92

97

 89

 94

DPL 1034B2RF

85

42

20

40

53

74

67

80

73

92

93

93

 90

MON 12R352B2R2

17

41

50

80

13

82

100

100

63

94

100

100

88

DG 2570B2RF

68

41

58

42

30

66

74

68

60

90

100

84

 87

DPL 0924B2RF

66

39

25

50

40

71

75

 80

63

95

100

 95

 93

DPL 1219B2RF

26

38

0

42

63

62

33

58

88

88

83

 88

100

PHY 339WRF

38

37

29

47

31

71

71

73

69

100

100

100

100

DPL 0920B2RF

41

37

29

40

41

66

57

100

64

90

86

100

 91

DPL 1048B2RF

66

36

25

33

46

76

67

73

79

95

92

97

 96

PHY 575WRF

37

35

67

22

44

62

67

44

81

84

100

83

81

ST 5458B2RF

91

33

14

38

39

63

62

67

57

86

86

86

 86

FM 1740 B2RF

86

33

25

25

42

58

50

59

61

79

69

84

 79

CG 3787B2RF

 28

32

 0

 –

 38

82

25

 –

92

 93

75

 –

 96

ST 4427B2RF

65

32

 50

16

36

64

 83

52

61

92

 96

 90

 92

DPL 1133B2RF

55

31

64

20

25

69

100

60

63

87

100

95

75

DPL 1032B2RF

29

31

60

13

31

66

100

50

63

97

100

100

 94

ST 4554B2RF

88

31

39

31

25

64

83

52

 61

 92

 96

 90

 92

DPL 1321B2RF

33

30

43

40

19

64

71

70

56

88

100

90

81

DPL 1454NRB2RF

7

29

29

71

71

86

86

DPL 0949B2RF

43

28

13

23

36

63

38

54

77

 91

 75

85

100

DPL 1311B2RF

25

28

29

30

25

60

43

60

75

80

43

90

100

AM 1550B2RF

123

28

39

23

27

59

75

 49

58

83

89

83

 80

PHY 375WRF

179

28

43

19

30

58

71

48

61

79

86

71

84

FM 1944GLB2

40

28

25

25

31

55

75

50

56

85

100

85

81

ST 6448GLB2

43

26

14

30

25

63

43

60

75

86

86

75

100

ST 4946GLB2

38

26

57

20

19

50

57

40

56

74

86

60

81

PHX 5409-3WRF

8

25

0

40

38

0

60

88

67

100

CG 3428B2RF

12

25

0

38

25

0

38

58

50

63

NG 5315B2RF

35

23

25

20

25

54

50

47

63

83

50

80

94

DPL 1359B2RF

26

23

33

25

13

42

50

50

25

73

83

75

63

PHY 367WRF

69

22

29

12

27

46

36

44

53

81

86

84

77

DPL 1044B2RF

9

22

25

20

44

75

20

67

100

40

ST 4288B2RF

66

21

18

28

17

48

55

56

40

83

91

92

73

PHY 485WRF

129

21

14

24

21

43

32

53

40

74

64

82

 73

DG 2610B2RF

26

19

14

0

25

58

43

100

56

77

71

100

75

MON 12R224B2R2

17

18

25

20

13

65

75

40

75

76

100

40

88

PHY 417WRF

22

18

50

20

0

36

100

30

13

59

100

70

25

ST 5288B2RF

76

16

18

11

21

46

36

46

50

86

 82

 86

 86

PHY 440W

 69

16

20

30

13

38

80

50

31

67

100

 80

 61

PHY 565WRF

74

16

7

17

20

34

21

27

47

66

71

50

 80

SSG CT LINWOOD

38

16

16

26

26

50

 50

ST 4145LLB2

20

15

0

19

55

25

63

85

50

94

DG CT13125F

14

14

25

0

13

64

75

50

63

86

100

100

75

PHY 427WRF

22

14

50

10

0

36

75

30

25

82

100

70

88

PHX 5403-5WRF

7

14

0

25

14

0

25

71

67

75

FM 1845LLB2

24

13

 –

 0

21

33

 –

30

 36

75

 –

70

 79

PHX 4433-14WRF

9

11

33

0

56

67

50

89

100

83

AT LA122

18

11

0

13

39

0

44

78

0

88

DPL 1212B2RF

10

10

0

14

40

33

43

50

33

57

AT 7A21

20

10

0

13

35

0

44

60

0

75

DG CT12353

10

10

50

0

20

50

13

40

50

38

DG 2285B2RF

12

8

25

0

42

75

25

67

100

50

AT NITRO44B2RF

24

8

0

0

13

25

0

40

25

67

33

80

69

SSG AU222

14

7

0

0

13

29

0

0

50

71

25

50

100

SSG HQ210CT

36

6

0

0

8

25

0

13

33

50

25

38

58

PHY 599WRF

17

6

0

0

13

12

0

0

25

24

50

0

25

DG CT13414

4

0

0

25

25

75

75

1High-yielding standard check variety for Southeast; not legally available for planting after the 2010 growing season (NOT ENTERED IN OVTs AFTER 2010).