Soil:

Embden Sandy Loam; pH=7.2; 2.5% organic matter; soil-P and soil-K were very high; soil-S was very low.

Previous crop:

2000 - cabbage, cauliflower, radish and broccoli; 1999 - onion; 1998 - pepper.

Seedbed

Preparation:

Chisel plow twice April 29. Multiweed (field cultivate) three times; once on May 9 to incorporate fertilizer and smooth seed bed and twice on May 14 to incorporate herbicide.

Planting:

Direct seeded raw carrot seeds with a barley cover crop (one bu/acre) on May 15 with a Monosem precision planter. Planting pattern was 3 lines per row (2 inches between lines in the row) on 18-inch centers. Planting rate was about 500,000 seeds/acre for processing, 800,000 seeds/acre for cello, 1.2 million seeds/acre for cut & peel and 1.4 million for baby carrots.

Plots:

Plots were 17 ft long by three feet wide (two rows wide plus the wheel track) . There were 4 reps.

Fertilizer:

On April 23, broadcast 14 lbs N/acre and 70 lbs P₂O₅/acre as 10-50-0, 16 lbs N/acre and 19 lbs S/acre as 21-0-0-24. Sprayed 50 lbs N/acre as 28-0-0 on May 9. Fertigated 35 lbs N/acre as 28-0-0 on July 2 on all carrots.

Irrigation:

Overhead sprinkler irrigation as needed.

Pest

control:

Weeds were controlled using Treflan (1.5 pt/acre on May 14), Poast + Dash (1.5 pt + 1 pt/acre on June 12), Lorox (1 lb/acre on May 16 and 2 lbs/acre on June 22) and by hand weeding. We sprayed Sevin (1 qt/acre on July 12, July 30 and Aug 27) and Asana (8 oz/acre on July 20, Aug 8 and Aug 15) to control leafhopper.

Harvest:

The baby carrots were harvested three times; July 11, July 18 and July 25. The cut and peel baby carrots were harvested three times; July 23-24, Aug 1 and Aug 15. The cello carrots were harvested twice; Aug 21 and Aug 28. The processing carrots were harvested once on October 8. The harvest area was two rows wide by three feet long for all carrots.

Hybrid

Seed source¹

US #1 carrots

Total yield

Total roots

yield (by root diameter)

% of total yield

>13/16"

¾ to 13/16"

⅝ to ¾”

⅜ to ⅝”

total

----------------------------- tons/acre -------------------------

%

tons/acre

1000s/acre

Harvested July 11

Adelaide

BE

0.1

0.8

2.1 a

1.7 b

4.8 b

82 a

5.8 b

546 b

Mignon

BE

0.0

0.0

0.1 b

1.2 b

1.3 c

62 b

2.0 c

407 c

Mokum

JS

0.0

0.9

2.4 a

2.9 a

6.2 a

86 a

7.3 a

645 a

C.V (%)

233

90

17

29

16

6

13

9

Probability

0.19

0.09

<0.0001

0.01

0.0001

0.0009

<0.0001

0.004

Harvested July 18

Adelaide

BE

1.0 b²

2.7 b

3.7 a

1.7

9.1 b

86 a

10.6 b

615 a

Mignon

BE

0.0 b

0.4 c

1.2 b

1.4

 3.0 c

74 b

4.0 c

465 b

Mokum

JS

3.1 a

4.6 a

3.6 a

1.5

12.8 a

87 a

14.8 a

662 a

C. V. (%)

62

19

37

21

22

5

21

14

Probability

0.006

<0.0001

0.03

0.35

0.0008

0.005

0.0008

0.03

Harvested July 24

Adelaide

BE

4.7 b

5.0 a

2.5

0.5 b

12.7 a

86

14.6 a

601

Mignon

BE

0.9 c

1.5 b

1.4

0.9 a

 4.6 b

83

 5.5 b

414

Mokum

JS

8.4 a

4.5 a

1.9

0.7 ab

15.5 a

85

18.1 a

659

C. V. (%)

34

43

37

20

26

8

22

21

Probability

0.002

0.04

0.16

0.04

0.004

0.73

0.002

0.054

Hybrid

Seed source¹

Multiple root

Average length

Root diameter

Core diameter

Cortex color²

Core color²

Contrast³

Uni-formity

Overall score

US #1 size

%

-------------- inches ---------

  -----1 to 4 ---

----- 1 to 5 ---

1 to 10

oz/root

Harvested July 11

Adelaide

BE

10

4.2 b⁴

0.56 ab

0.28

2.0 b

3.0

3.3 b

3.1 b

6.5 a

0.41 a

Mignon

BE

5

3.3 c

0.49 b

0.23

2.0 b

2.8

3.5 b

3.8 a

3.0 b

0.25 b

Mokum

JS

4

4.8 a

0.61 a

0.26

3.0 a

3.0

4.5 a

3.8 a

7.5 a

0.43 a

C.V (%)

67

8

10

19

0

9

15

8

25

10

Probability

0.22

0.002

0.04

0.36

<0.0001

0.42

0.04

0.03

0.01

0.001

Harvested July 18

Adelaide

BE

9

4.2 b

0.69

0.27

2.8 a

3.3

3.8

3.0

6.0 a

0.61 b

Mignon

BE

10

3.7 b

0.58

0.25

1.8 b

3.0

2.8

2.8

4.0 b

0.36 c

Mokum

JS

9

5.3 a

0.72

0.25

3.0 a

3.0

2.8

3.8

6.9 a

0.78 a

C. V. (%)

30

7

12

12

18

9

51

25

17

11

Probability

0.85

0.0008

0.10

0.58

0.02

0.42

0.61

0.26

0.01

0.0002

Harvested July 24

Adelaide

BE

9

4.4 b

0.67

0.28

1.5

3.8

2.3

2.8

5.3

0.86 a

Mignon

BE

8

4.1 b

0.67

0.29

1.8

3.0

3.0

2.4

5.3

0.51 b

Mokum

JS

6

5.4 a

0.74

0.28

2.5

3.3

2.0

2.8

5.0

0.95 a

C. V. (%)

37

9

11

10

29

11

33

23

17

12

Probability

0.29

0.01

0.37

0.96

0.10

0.07

0.26

0.61

0.90

0.001

Hybrid

Seed source¹

US #1 carrots

Total yield

Total roots

yield (by root diameter)

% of total yield

>13/16"

¾ to 13/16"

⅝ to ¾”

⅜ to ⅝”

total

------------------------------- tons/acre ------------------------------

%

tons/A

1000s/A

Harvested July 24

Indiana

BE

1.6 ab

2.0 b

2.7 b

1.7

8.0 bc

85

9.5 bc

540

Intruder (1812)

BE

0.4 d

1.8 b

2.8 b

2.3

 7.3 bc

83

 8.7 bc

603

Newport

BE

0.4 d

2.0 b

2.8 b

1.6

 6.9 c

86

 8.0 c

512

PrimeCut 59

SS

0.7 cd

1.8 b

2.8 b

2.3

 7.5 bc

83

 9.0 bc

553

SugarSnax

JS

2.0 a

3.4 a

3.5 ab

1.4

10.3 a

87

11.8 a

545

SugarSnax 54

SS

1.2 bc

3.8 a

3.5 ab

1.7

10.1 a

86

11.8 a

604

SXC 3293

SS

0.7 cd

1.8 b

4.2 1

2.1

 8.8 ab

86

10.3 ab

564

C.V (%)

43

23

19

33

14

7

11

15

Probability

0.0002

<0.0001

0.02

0.28

0.002

0.94

0.0004

0.69

Harvested August 1

Indiana

BE

5.1 bc

2.9

2.0

1.0

10.9 b

83

13.1 c

503 b

Intruder (1812)

BE

3.0 c

2.5

2.7

1.6

 9.8 b

82

11.9 c

583 a

Newport

BE

4.6 bc

2.7

2.4

1.1

10.8 b

83

13.0 c

531 ab

PrimeCut 59

SS

3.0 c

3.9

2.6

1.2

10.6 b

82

12.9 c

538 ab

SugarSnax

JS

7.4 a

3.8

2.4

1.0

14.5 a

84

17.3 a

560 ab

SugarSnax 54

SS

6.4 ab

3.5

2.1

1.0

12.9 a

80

16.3 ab

583 a

SXC 3293

SS

5.2 b

3.6

3.6

1.4

13.9 a

89

15.6 b

595 a

C. V. (%)

29

21

31

39

11

6

7

9

Probability

0.003

0.06

0.14

0.35

0.0002

0.31

<0.0001

0.14

Harvested August 15

Indiana

BE

9.6 b

3.8

1.9

1.0

16.2

81

19.9

537

Intruder (1812)

BE

 7.8 b

3.5

2.4

1.4

14.9

78

19.1

594

Newport

BE

 8.1 b

2.9

2.1

1.0

14.1

82

17.2

512

PrimeCut 59

SS

10.6ab

3.8

2.1

0.6

17.1

83

20.8

561

SugarSnax

JS

14.1 a

3.0

1.7

0.7

19.5

83

23.4

734

SugarSnax 54

SS

14.0 a

2.8

1.2

0.3

18.3

85

21.4

432

SXC 3293

SS

 8.7 b

3.4

3.1

1.2

16.4

86

18.9

541

C. V. (%)

25

34

37

52

20

7

17

25

Probability

0.009

0.76

0.08

0..06

0.34

0.57

0.27

0.17

Hybrid

Seed source¹

Multiple root

Average length

Root diameter

Core diameter

Cortex color²

Core color²

Contrast³

Uni-formity

Overall score

US #1 size

%

----------- inches -----------

----- 1 to 4 -----

----- 1 to 5 ----

1 to 10

oz/root

Harvested July 24

Indiana

BE

8

6.9

0.63

0.31 ab

3.0

3.0 ab

3.0

3.3

6.5

0.73 bc

Intruder (1812)

BE

5

6.6

0.61

0.30 ab

2.8

2.5 abc

3.0

3.5

6.5

0.60 d

Newport

BE

5

6.8

0.68

0.37 a

2.8

2.3 bc

3.0

3.5

6.0

0.66 bcd

PrimeCut 59

SS

9

6.8

0.60

0.25 b

2.8

2.3 bc

2.8

3.5

6.8

0.65 cd

SugarSnax

JS

5

7.2

0.67

0.27 b

3.0

2.8 abc

4.0

3.3

6.5

0.81 a

SugarSnax 54

SS

5

7.4

0.61

0.31 ab

3.0

3.3 a

2.3

3.3

6.0

0.73 ab

SXC 3293

SS

6

7.1

0.59

0.25 b

3.0

2.0 c

2.5

3.8

6.3

0.69 bc

C.V (%)

68

7

13

21

11

21

30

21

18

8

Probability

0.70

0.40

0.61

0.11

0..66

0.04

0.22

0.94

0.95

0.0009

Harvested August 1

Indiana

BE

 6

7.0 abc⁴

0.72 c

0.31

3.0

3.5

3.0 bc

2.4

6.8

0.97 bc

Intruder (1812)

BE

 8

6.6 c

0.80 a

0.33

3.0

2.9

3.3 bc

2.0

6.3

0.83 d

Newport

BE

 6

6.6 c

0.74 bc

0.32

2.8

3.5

3.5 abc

2.3

6.9

0.91 cd

PrimeCut 59

SS

 5

6.9 bc

0.75 bc

0.31

3.0

2.6

2.9 bc

2.9

7.0

0.90 cd

SugarSnax

JS

 8

7.2 ab

0.78 ab

0.32

3.0

2.6

4.5 a

2.6

6.8

1.10 a

SugarSnax 54

SS

11

7.3 a

0.73 c

0.31

3.0

2.8

3.8 ab

2.1

6.1

1.05 ab

SXC 3293

SS

 6

6.9 abc

0.72 c

0.27

3.0

2.0

2.5 c

3.3

7.8

0.97 bc

C. V. (%)

46

4

4

14

6

30

22

40

12

7

Probability

0.28

0.02

0.02

0.42

0.46

0.21

0.03

0.59

0.18

0.0004

Harvested August 15

Indiana

BE

7

7.5

0.79

0.35 a

3.3 ab

2.9

3.8

3.3

6.8

1.35 b

Intruder (1812)

BE

11

6.8

0.75

0.27 b

2.9 bc

2.6

4.5

2.8

6.0

1.15 b

Newport

BE

8

7.1

0.74

0.31 b

3.6 a

3.1

3.5

2.6

6.3

1.25 b

PrimeCut 59

SS

7

7.1

0.76

0.30 b

2.9 bc

2.8

4.0

3.1

6.5

1.39 b

SugarSnax

JS

7

7.1

0.78

0.31 b

2.5 c

2.8

4.0

3.3

6.8

1.27 b

SugarSnax 54

SS

8

7.6

0.75

0.30 b

3.3 ab

2.6

4.3

3.7

7.4

1.75 a

SXC 3293

SS

7

6.7

0.76

0.29 b

3.4 ab

3.0

4.0

3.3

7.3

1.25 b

C. V. (%)

64

6

5

11

14

23

15

14

14

16

Probability

0.92

0.06

0.64

0.04

0.04

0.90

0.37

0.051

0.37

0.02

Hybrid

Seed source¹

US #1 carrots

Total yield

Total roots

yield (by root diameter)

% of total yield

>1.5"

1.0 to 1.5"

¾ to 1"

total

>1.0"

total

----------------------- tons/acre ---------------------

------ % -----

tons/A

1000s/A

Harvested August 21

1909

BE

15.9 a²

10.5

0.7 c

27.1 ab

77

80 bc

34.0 ab

414

Apache

SS

 5.3 de

12.8

3.1 a

21.1 def

73

86 ab

24.6 ef

405

Bangor

BE

14.9 ab

12.3

0.3 c

27.4 a

75

76 c

36.2 a

414

Bergen

BE

 8.9 cde

13.5

0.9 bc

23.3 b-f

79

82 abc

28.4 d

405

Berlanda

BE

 7.4 cde

15.0

0.9 bc

23.4 b-f

74

77 c

30.1 cd

428

Bolero

VL

 8.6 cde

14.9

0.9 bc

24.4 a-d

79

82 abc

29.8 cd

371

Choctaw

SS

 5.0 e

12.0

2.9 a

19.9 f

75

88 a

22.5 f

384

Fontana

BE

 9.7 cde

12.3

0.5 c

22.5 c-f

79

81 abc

27.9 de

376

Idaho

BE

10.0 bcd

14.4

1.6 b

25.9 abc

75

80 bc

32.4 bc

439

Kamaran

BE

12.1 abc

11.5

0.6 c

24.2 a-e

75

77 c

31.6 bcd

380

Navajo

SS

 5.0 e

11.6

3.8 a

20.3 ef

71

87 ab

23.4 f

380

C.V (%)

37

21

45

12

8

6

9

14

Probability

0.0005

0.27

<0.0001

0.005

0.59

0.03

<0.0001

0.72

Harvested August 28

1909

BE

23.7 a

9.8

0.5 c

34.0 a

78

79

42.9 a

399

Apache

SS

 8.5 efg

13.6

2.9 b

25.0 cde

78

87

28.7 cd

411

Bangor

BE

19.5 ab

11.5

0.2 c

31.1 ab

79

79

39.2 a

384

Bergen

BE

14.6 bcd

12.1

0.5 c

27.2 cb

78

79

34.3 b

375

Berlanda

BE

 9.4 d-g

15.7

0.7 c

25.8 bcd

78

80

32.0 bc

397

Bolero

VL

 9.5 d-g

15.3

0.5 c

25.4 cde

76

77

32.7 bc

438

Choctaw

SS

 6.1 g

10.4

4.3 a

20.8 de

65

82

25.3 de

404

Fontana

BE

12.2 c-e

10.5

0.3 c

23.0 cde

81

82

28.2 cde

316

Idaho

BE

13.6 cde

10.9

0.8 c

25.3 cde

76

79

32.0 bc

367

Kamaran

BE

15.2 bc

11.3

0.1 c

26.7 bc

81

82

32.5 bc

338

Navajo

SS

 6.9 fg

11.0

2.1 b

20.0 e

75

84

23.8 e

350

C. V. (%)

31

24

58

15

9

8

10

15

Probability

<0.0001

0.10

<0.0001

0.001

0.19

0.63

<0.0001

0.17

Hybrid

Seed source¹

Multiple root

Average length

Root diameter

Core diameter

Cortex color²

Core color²

Contrast³

Uni-formity

Overall score

US #1 size

%

----------- inches ------------

--- 1 to 4 ---

----- 1 to 5 ----

1 to 10

oz/root

Harvested August 21

1909

BE

5

5.8 cd⁴

1.10

0.53

2.6 abc

3.3

2.3

2.1

6.0

3.6 ab

Apache

SS

4

6.9 a

1.05

0.50

2.6 abc

2.8

3.0

2.3

6.3

2.3 ef

Bangor

BE

6

5.7 d

1.20

0.54

2.5 bc

2.9

2.0

2.4

6.0

3.8 a

Bergen

BE

7

6.1 bcd

1.19

0.63

2.4 bc

3.4

2.4

2.4

6.4

3.1 bcd

Berlanda

BE

7

6.4 a-d

1.10

0.56

2.0 c

3.4

2.5

3.1

7.3

2.9 d

Bolero

VL

8

5.9 cd

1.24

0.54

2.8 abc

2.8

3.3

2.5

6.4

3.0 cd

Choctaw

SS

5

6.8 ab

1.14

0.53

3.4 a

3.5

3.0

2.9

7.1

2.2 f

Fontana

BE

8

6.1 bcd

1.20

0.55

2.5 bc

3.0

2.8

2.4

6.4

2.9 cd

Idaho

BE

8

6.4 bcd

1.13

0.58

2.9 ab

3.6

2.4

2.4

6.4

2.8 de

Kamaran

BE

6

6.1 bcd

1.25

0.57

2.9 ab

3.8

2.6

2.8

6.8

3.5 abc

Navajo

SS

7

6.6 ab

1.23

0.57

3.4 a

3.5

2.9

2.8

6.9

2.1 f

C.V (%)

77

8

11

18

20

22

30

25

11

13

Probability

0.98

0.03

0.96

0.95

0.04

0.28

0.37

0.58

0.35

<0.0001

Harvested August 28

1909

BE

6

6.1 cd

1.26

0.55

3.1 ab

3.5

3.6 ab

3.1

6.0 bc

4.2 ab

Apache

SS

4

6.8 a

1.09

0.50

3.3 a

3.5

4.0 ab

3.1

7.4 a

2.5 ef

Bangor

BE

6

6.1 cd

1.27

0.67

3.0 ab

3.0

2.0 cd

2.9

5.8 c

4.3 a

Bergen

BE

7

6.5 abc

1.17

0.63

2.3 c

2.9

1.5 d

2.6

7.0 ab

3.7 bc

Berlanda

BE

7

6.2 bcd

1.14

0.64

2.3 c

3.3

2.1 cd

3.4

7.0 ab

3.1 d

Bolero

VL

7

5.8 d

1.21

0.48

3.0 ab

3.0

3.8 ab

2.6

6.6 abc

3.0 de

Choctaw

SS

12

6.9 a

1.15

0.50

3.5 a

3.4

4.4 a

3.1

7.1 a

2.2 f

Fontana

BE

7

6.4 abc

1.18

0.51

3.0 ab

3.3

2.3 cd

3.6

7.4 a

3.4 cd

Idaho

BE

12

6.5 abc

1.20

0.52

3.0 ab

3.9

3.0 bc

3.3

6.6 abc

3.3 cd

Kamaran

BE

7

6.0 cd

1.30

0.48

3.0 ab

2.8

4.0 ab

3.4

7.3 a

3.7 bc

Navajo