July, 2012
Field Crops 28.33 - 94

Corn Transgenic and Trait Technologies in UW Trials during 2012

Joe Lauer, Corn Agronomist

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The weather during 2012 is proving to be similar to other drought years like 1976, 1988, 1989 and 2005. Yields decreased during these years, except for the 2005 season when record grain yields were recorded. A big difference between 2005 and previous drought years was the presence of transgenic traits in corn hybrids, especially Bt-ECB traits.

European corn borer and increased stalk tunneling damage is often associated with drought stressed environments. Water transpiration cools important plant parts when it is able to get to those structures. If ECB tunnels are present, water flow to leaves and the ear is interrupted and surface temperature can increase along with stress. Modern hybrids have a greater capacity to maintain the integrity of the stalk for efficient water use. I often hear comments from farmers that "these hybrids can withstand greater stress." However, when the water in the soil profile runs out, it runs out regardless of whether or not it is transgenic.

The objective of the University of Wisconsin Corn Hybrid Performance Trials is to provide unbiased performance comparisons of hybrid seed corn available in Wisconsin. In 2012, a total of 510 corn hybrids are being evaluated in 53 experiments at 14 locations (Figure 1).

Below is a list of technologies included in the program with the corresponding number of hybrids being evaluated in various zones and trials (Table 1.). These include both transgenic and trait technologies. In the table below, an “_S” indicates a silage trial for the region, while an “_ORG” indicates and organic trial. Leafy and bmr traits are not listed.

New transgenic technologies include Optimum AcreMax Xtra. New native trait technologies include Agrisure Artesian.

Table 1. List of transgenic and native trait technologies in the 2012 UW Corn Hybrid Performance Trials.

Transgenic Technology

Trait Technology

N

N_S

NC

NC_ORG

NC_S

SC

SC_S

S

S_ORG

S_S

Total

Agrisure Viptera 3111

 

3

2

7

0

7

9

3

7

0

2

40

Agrisure 3000GT

 

12

10

26

0

14

12

13

23

0

8

118

Agrisure 3000GT

Agrisure Artesian

0

0

0

0

0

1

2

1

0

1

5

Agrisure CB/LL/RW

 

0

0

0

0

0

0

1

0

0

1

2

Agrisure GT

 

5

1

1

0

3

1

1

5

0

1

18

Agrisure GT/CB/LL

 

5

2

4

0

2

3

0

1

0

1

18

Conventional

 

4

3

6

13

13

9

14

12

17

11

102

DAS  SmartStax

 

8

1

12

0

3

8

4

7

0

3

46

Genuity SmartStax

 

0

0

5

0

3

14

4

12

0

2

40

Genuity VT Double Pro

 

4

0

5

0

1

2

0

1

0

1

14

Genuity VT Triple Pro

 

13

2

51

0

18

40

14

36

0

18

192

Herculex I plus Roundup Ready Corn 2

 

6

2

8

0

3

13

3

11

0

1

47

Herculex XTRA

 

0

0

0

0

0

0

0

0

0

1

1

Herculex XTRA plus Roundup Ready Corn 2

 

3

1

5

0

4

4

7

3

0

11

38

Optimum AcreMax  1

 

0

2

0

0

2

3

2

1

0

2

12

Optimum AcreMax Xtra

 

0

1

1

0

0

1

1

2

0

1

7

Roundup Ready Corn 2

 

3

0

5

0

1

1

0

2

0

0

12

YieldGard VT Triple

 

4

1

13

0

4

13

6

10

0

6

57

Total

 

70

28

149

13

78

134

75

134

17

71

769

* _S = Silage Trials
_ORG = Organic Trials

  

 

 

 

 

 

 

 

 

 

 

 

Further Reading

Wisconsin Corn Hybrid Trials


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