2010 SCC-33/UCTA Meetings

Evaluation of University Variety Testing Programs

Lanny Ashlock, Cullum Seeds Agronomist

SSC-33 MeetingPoint Clear, Alabama

Marriott Grand Hotel and Resort January 27, 2009 

Topic: Use of OVT data by farmers:

will this decrease or increase over time?

2009 SSC-33 MeetingTopic: Use of OVT data by farmers:

will this decrease or increase over time?

 

To get a grasp on the present situation, I sent a 4 question

survey to some select growers and consultants.

2009 SSC-33 MeetingTopic: Use of OVT data by farmers:

will this decrease or increase over time?

 

2009 limited AR survey conclusions : • The base perception in support of the for OVT among key farmers (influential producers) was very positive .• The base perception in support of the OVT by crop advisors was also mostly positive (limited responders).

2009 SSC-33 MeetingTopic: Use of OVT data by farmers:

will this decrease or increase over time?

 

Survey inferences to this agronomist:

Seed companies (esp. regional) should continue to enter at least the newer material into the OVT (many reasons).

2010 SCC-33/UCTA Meetings

What I didn’t survey in 2009:

What is the perception of Seed Company personnel (agronomists & management) regarding

the value of the results obtained from the University OVTs?

2010 SCC-33/UCTA Meetings

My 2009 Perception:

Our regional company relies heavily upon University OVT testing program.

In the Mid-South screening for pest tolerances & rating info is just about

as important as the yield data.

2010 SCC-33/UCTA Meetings

Our 2009 Perception:

With new trait development on the immediate horizon (it’s here) some had questions regarding just how

much confidence to place in both the genetic suppliers &/or the University

OVT program.

2010 SCC-33/UCTA Meetings

Rationale for Multiple Entries: Yield Differences

(cross company entries) Disease/Nematode Ratings

New Traits (Decisions) Herbicide Ratings Salt Tolerances

(Need to make smart decisions)

SCC2010 Meeting

Material and Methods:Submitted 3 MG 4 experimental lines

for testing in 2009 Submitted to 6 Southern

University OVT programs Duplicate samples submitted

Same lot & same bag

Same seed treatment

Results: Yield Evaluation

2010 SCC-33/UCTA Meetings

2010 SCC-33/UCTA MeetingsA

Variety 1 2 3 4 5 MeanX0431 63.6 64.1 61.4 68.9 59.3 63.4X0432 61.5 60.6 68 72.5 60.8 64.7

N.Sig. N.Sig. N.Sig. N.Sig. N.Sig. N.Sig.X0461 73.9* 66.6 73.6 74.7* 67.1 71.2X0462 73.9* 68.1* 79.4* 70.6 61.8 70.8

N.Sig. N.Sig. N.Sig. N.Sig. N.Sig. N.Sig.X0471 69.4 67.1* 82.1* 81.5* 58.9 71.8*X0472 78* 69.6* 74.7* 80.2* 60.4 72.6*

Sig. N.Sig. N.Sig. N.Sig. N.Sig. N.Sig.X0473 65.8 58.9 71.2 69.7 62.4 65.6X0474 67 62.5 61,5 68.1 57.1 63.2

  N.Sig. N.Sig. N.Sig. N.Sig. N.Sig. N.Sig.LSD.10 6.5 7 9.4 7.1 5.9 3.2C.V.% 6.9 8.1 10.2 7.3 7.2 7.9

2010 SCC-33/UCTA MeetingsB

Variety 1 2 3 4X0431 43.4* 51.5 41.9* 57.1*X0432 48.3* 52.3 37.0 48.6

N.Sig. N.Sig. N.Sig. N.Sig.X0461 42.4* 58.5 35.6 51.8X0462 42.7* 57.7 40.5 61.2*

N.Sig. N.Sig. N.Sig. N.Sig.LSD.10 15.7 6.9 10.2 10.6C.V.% 19.9 10.9 14.1 16.9

   X0471 56.3** NA 48.5 54.2X0472 56.2* NA 45.9 54.8

N.Sig. N.Sig. N.Sig.X0473 43.9 NA 53.1 61.0X0474 47.1* NA 48.5 55.2

  N.Sig. N.Sig. N.Sig.LSD.10 12.1 NA 11.4 8.7C.V.% 13.7 NA 13.1 11.3

2010 SCC-33/UCTA MeetingsC

Variety 1 2 3 4X0431 69.9* 59.6* 71.3 71.3X0432 70.8* 65.2* 70.7 74.2*

N. Sig. N. Sig. N. Sig. N. Sig.X0461 70.1* 62.3* 68.6 81.7*X0462 67.2 69** 74.4* 75.3*

N. Sig. N. Sig. N. Sig. N. Sig.LSD.10 5.1 11.5 8.9 10.1

C.V.% 5.5 12.5 8.8 10       

X0471 74.1 58.2 57.3 74.1X0472 76.9* 55 67.1* 79.9*

N. Sig. N. Sig. Sig. N. Sig.X0473 66.5 64.9** 55.1 77.3*X0474 62.8 53.7 63.3* 79.8*

N. Sig. Sig. N. Sig. N. Sig.LSD.10 9.3 8.5 8.5 7.1

C.V.% 9.9 11.1 9.2 6.8

2010 SCC-33/UCTA Meetings

DVariety 1 2 3 4X0431 72.3 59.1 69.5 39.0X0432 71.1 61.0 73.3 39.4

N.Sig. N.Sig. N.Sig. N.Sig.X0461 72.0 68.3 82 52.7X0462 69.6 66.3 77.9 54.7

N.Sig. N.Sig. N.Sig. N.Sig.LSD.05 8.3 7.2 7.2 9.7C.V.% 7.7 6.9 6.4 11.1

         X0471 79.2 74.1 81.2 82.3X0472 78.5 77.5 76.3 79.8

N.Sig. N.Sig. N.Sig. N.Sig.X0473 75.3 69.5 64.6 66.3X0474 76.7 73.0 68.6 70.1

N.Sig. N.Sig. N.Sig. N.Sig.LSD.05 3.9 6.9 9.5 8.0C.V.% 3.4 6.2 8.7 6.7

2010 SCC-33/UCTA Meetings

E Variety 1 2 3 4 Mean

X0431 67.1 65.2 70.7 74.6 71.6

X0432 71.2 68.4 69.7 66.3 71.2

N.Sig. N.Sig. N.Sig. Sig. N.Sig.

LSD.10 6.2 5.1 6.6 6.7 2.7

X0461 74.4 70.6 81.3 88.3 81.7

X0462 79.2 73.7 79.5 82.3 78.8

  N.Sig. N.Sig. N.Sig. N.Sig. N.Sig.

X0471 78.7 69.8 76.4 81.1 78.0

X0472 79.2 69.2 76.3 86.3 80.0

N.Sig. N.Sig. N.Sig. N.Sig. N.Sig.

X0473 73.7 69.8 73.6 69.7 73.8

X0474 73.8 67.2 74.3 63.7 73.2

N.Sig. N.Sig. N.Sig. N.Sig. N.Sig.LSD.10 5.8 4.8 5.1 8.3 2.9

Results: Selected Disease Evaluation

2010 SCC-33/UCTA Meetings

2010 SCC-33/UCTA Meetings

Stem Canker Stem Canker RKN SDS SCN-R2 Variety B D D F D

X0431 R NT 5 1% 14-MR

X0432 R NT 5 1% 64-S

X0461 NT R 5 32% 64-S

X0462 NT R 5 20% 43-MS

X0471 MS MR 5 15% 50-MS

X0472 MS R 5 23% 50-MS

X0473 R R 4.75 1% 43-MSX0474 R R 4.75 1% 36-MS

2010 SCC-33/UCTA Meetings

OVT : What did we learn

(Our Company Perspective)Increased confidence in OVT

Decision-making toolSignificant but necessary

expense

2010 SCC-33/UCTA Meetings

University PerspectivePolicy of experimental entriesDo you insert a check anyway

Land & Labor constraintsDisease ratings & Nursery space?

Questions and Comments

Cullum Seeds Website

www.cullumseeds.com

Or

lannyashlock@cullumseeds.com

cell phone:870.588.1110