The success of flax production is affected by choice of variety. Variety characteristics such as seed yield, oil content, disease resistance, and maturity should be examined carefully when deciding which variety or varieties to plant. In some cases oil content or other traits may offset a yield advantage

Gilbertson, Lee

Grady, Kathleen

English

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South Dakota State UniversityOpen PRAIRIE: Open Public Research Access InstitutionalRepository and Information ExchangeExtension Extra SDSU Extension10-1-2009South Dakota Flax Variety Evaluations 2009Kathleen GradySouth Dakota State UniversityLee GilbertsonSouth Dakota State UniversityFollow this and additional works at: http://openprairie.sdstate.edu/extension_extraThis Other is brought to you for free and open access by the SDSU Extension at Open PRAIRIE: Open Public Research Access InstitutionalRepository and Information Exchange. It has been accepted for inclusion in Extension Extra by an authorized administrator of Open PRAIRIE: OpenPublic Research Access Institutional Repository and Information Exchange. For more information, please contact michael.biondo@sdstate.edu.Recommended CitationGrady, Kathleen and Gilbertson, Lee, "South Dakota Flax Variety Evaluations 2009" (2009). Extension Extra. Paper 265.http://openprairie.sdstate.edu/extension_extra/265The success of flax production is affected by choice of vari-ety. Carefully examine variety characteristics such as seedyield, oil content, and maturity.  In some cases oil contentor maturity may offset a yield advantage.YieldEvaluate as much yield data as possible, looking at relativeperformance over many locations and years.  For example,in this publication, variety comparisons from 3 years andfive locations are better than those from a single year orlocation.  Consistently good performance over many envi-ronments is called “yield stability.”Good yield stability means that a variety may or may not bethe best yielder at all locations, but it does rank high inyield potential at many locations.  A variety that ranks inthe upper 20% over all locations exhibits better yield stabil-ity than one that is the top yielder at two locations but ranksin the lower 40% at two other locations.Table 1 presents flax yield data from 2003 (or the mostrecent year for which data are available) for several sites inSouth Dakota.  Three-year and statewide yield averages arealso provided.  Table 2 summarizes the characteristics ofthe varieties included in the performance trials.To determine if one variety is better than another for agiven trait, use the least significant difference (LSD.05)value at the bottom of each data column.  The LSD value isa statistical way to indicate if a trait like yield differs whencomparing two varieties.  If two varieties differ by morethan the indicated LSD value for a given trait, they willlikely differ when grown again under highly similar condi-tions.For example, if the trial at Webster could be repeated exact-ly as it was in 2003 (see Table 1), the yield ranking of ACEmerson (35.6 bu/A) and AC Watson (30.8 bu/A) mightchange places since their yield difference (4.8 bu/A) is lessthan the indicated LSD value of 5.5 bu/A.  However, wewould expect AC Emerson (35.6 bu/A) to yield more thanCathay (29.2 bu/A) if the test was repeated since their yielddifference (6.4 bu/A) is greater than the indicated yieldLSD value of 5.5 bu/A.In Table 1, the minimum yield of varieties in the top-yield-ing group at a particular location is at the bottom of eachdata column (when significant differences in yield weremeasured).  Any variety meeting or exceeding this mini-mum yield value differed by less than the LSD.05 valuefrom the highest-yielding variety in the test and is thereforeconsidered to be in the top-yielding group.  For example, inthe 2003 trial at Webster there were 12 varieties in the top-yield group.  Numerically, AC Emerson had the highestyield (35.6 bu/A).  However, 11 other varieties were also inthe top-yield group because their yields were within oneLSD value (5.5 bu/A) of AC Emerson.If the LSD.05 value is indicated as ‘ns,’ there were nostatistically significant differences in yield among thevarieties.  In other words, the variety yields were all closeenough to each other to be essentially the same, consideringthe amount of error inherent in the test.When evaluating yield, look at as many trials as possible.It is unlikely that the environmental conditions of a test willrepeat in any future year.The coefficient of variability (C.V.) listed at the bottom ofthe data table is a relative measure of the precision or relia-bility of a test.  Generally, trials with low C.V. rates aremore reliable for making variety choices than trials withhigher C.V. rates.  Trials with C.V. rates not exceeding 15-20% may be considered reliable.ExEx 8055January 2004Plant ScienceCOLLEGE OF AGRICULTURE & BIOLOGICAL SCIENCES / SOUTH DAKOTA STATE UNIVERSITY / USDASouth Dakota Flax Variety Evaluations2003 Kathleen Grady, oilseed breeder and Extension specialistLee Gilbertson, senior ag research technician Oil ContentAmong varieties with similar yield potential, select theone with the highest oil content.MaturityLater-maturing varieties generally will produce higheryields than early varieties when seeded at normal plantingdates.  Maturity is particularly important if planting isdelayed.  In many cases of late seeding only an earlyvariety will mature properly and exhibit its best yieldpotential and oil content.Seed Availability and QualitySeed sources for Canadian and some older flax varietiesmay be limited.  Be sure to plant only high quality seedwith good germination.  Certified seed is recommended toassure varietal purity, viability, and freedom frompathogens and weed seed.Table 1.  2003 and three-year average flax yields(bu/A) at several locations in South Dakota.Brookings Brookings State- Yield*Origin            Early-Seeded              Late-seeded Watertown Webster Highmore         Statewide wide Sta-Variety -Year           2000         3-yr         2003          3-yr          2002        3-yr          2003         3-yr           2003         2003        3-yr Rank      bility-3-                      -4-                        -3-                         -3- -3-      -14-AC Carnduff CAN-99 28.2 21.8 18.9 13.1 15.5 16.1 31.7 22.4 23.6 24.8 19.0 2 8/14AC Emerson CAN-95 29.5 21.2 18.2 14.8 11.0 12.7 35.6 20.0 20.8 25.3 17.7 18 11/14AC Hanley CAN-02 -- -- 18.2 -- 11.7 -- 30.9 -- 16.3 22.4 17.6 20 5/6AC Watson CAN-97 25.4 17.0 16.6 14.8 12.8 13.0 30.8 24.2 22.2 23.2 17.9 15 9/14Cathay ND-97 26.2 19.1 18.9 13.2 13.9 14.1 29.2 23.2 18.8 22.7 17.9 15 5/14CDC Arras CAN-00 31.7 20.8 23.1 14.7 13.8 13.1 31.8 24.2 19.5 25.4 18.6 6 9/14CDC Bethume CAN-00 27.8 18.7 19.7 15.4 12.3 12.9 30.8 23.3 21.0 24.1 18.1 12 9/14CDC Mons CAN-03 -- -- 15.7 -- -- -- 30.6 -- -- -- -- -- 2/2CDC Normandy CAN-96 25.7 18.4 24.0 14.5 12.3 14.4 29.8 21.9 21.5 25.5 18.2 11 5/14CDC Valour CAN-97 25.6 17.5 18.0 12.3 13.3 15.9 26.3 18.7 18.2 21.1 16.6 22 6/14Day SD-90 32.3 21.2 19.1 14.7 12.5 14.2 27.4 21.6 20.4 22.5 18.3 9 9/14Linora CAN-92 26.5 20.4 26.8 14.2 12.3 15.6 29.0 24.0 19.5 25.7 19.4 1 8/14Linott CAN-66 28.1 18.9 18.9 13.6 13.4 14.1 26.9 21.5 21.0 22.3 17.7 18 6/14McGregor CAN-82 28.7 17.8 20.7 14.3 9.9 10.7 28.1 23.0 17.4 22.6 16.9 21 5/14Neche ND-88 33.0 21.0 19.4 13.8 13.1 14.8 32.3 25.2 18.5 23.9 19.0 2 8/14Nekoma ND-02 -- 18.5 23.5 14.6 11.6 16.8 28.6 21.7 18.8 24.2 18.3 9 6/14Omega ND-90 28.8 21.4 18.9 14.0 14.1 13.8 30.1 24.3 19.5 23.1 18.7 5 9/14Pembina ND-97 25.8 17.7 22.3 13.6 10.2 12.6 26.3 21.2 14.3 21.7 16.4 23 4/14Prairie Blue CAN-03 -- -- 20.6 -- 11.0 -- 29.0 -- 21.6 23.9 -- -- 3/4Prompt SD-89 24.0 18.7 21.6 15.1 10.9 15.1 25.5 20.9 19.8 22.5 18.1 12 8/14Rahab 94 SD-94 27.2 17.7 22.0 15.1 10.6 14.5 33.8 22.8 19.0 25.6 18.0 14 7/14Selby SD-00 27.5 18.3 22.7 14.5 15.1 16.3 26.3 22.6 20.6 23.5 18.6 6 8/14Verne 93 SD-93 26.4 19.9 21.5 15.1 14.2 16.6 27.2 22.3 20.3 23.2 19.0 2 8/14Webster SD-98 31.6 18.9 20.4 13.0 14.6 16.6 29.4 22.1 17.1 22.8 17.8 17 7/14York ND-02 28.2 21.2 23.4 16.3 12.6 14.2 29.6 21.3 17.2 24.1 18.5 8 8/14ExperimentalsN0010 ND-exp. -- -- 15.3 -- 12.2 -- 32.0 -- 19.3 22.5 18.8 -- 5/6FP1096 CAN-exp. -- -- 20.0 -- 12.4 -- 30.5 -- 20.7 24.0 17.2 -- 5/6N0009 ND-exp. -- -- 21.5 -- 14.0 -- 26.7 -- 20.4 23.1 -- -- 3/4Grand Mean 27.8 19.4 20.4 14.3 12.6 14.4 29.6 22.4 19.5 23.5 18.1LSD.05 4.2 ns^ ns ns ns ns 5.5 ns 3.9 ns nsMinimum yield of top group 28.8 ns ns ns ns ns 30.1 ns 19.7 ns nsC.V. 9.3 12.0 14.6 13.9 16.0 15.6 11.4 14.2 9.7 13.3 13.9* Yield stability = number of times in top yield group/total number of tests.^ ns = there were no significant differences in yield among the varieties.Issued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the USDA. Larry Tidemann, Director ofExtension, Associate Dean, College of Agriculture & Biological Sciences, South Dakota State University, Brookings. SDSU is an Affirmative Action/EqualOpportunity Employer (Male/Female) and offers all benefits, services, and educational and employment opportunities without regard for ancestry, age,race, citizenship, color, creed, religion, gender, disability, national origin, sexual preference, or Vietnam Era veteran status.ExEx 8055(rev), January 2004. Access at http://agbiopubs.sdstate.edu/articles/ExEx8055.pdfTable 2.  Characteristics of flax varieties.Statewide Averages DiseaseOrigin Days to Seed Color Height             Yield (bu/A) Lodging         ResistanceVariety -Year Flower Size Flower Seed      Oil % (cm) 2003          3-yr         (1-9)*      Wilt Rust-3- -11- -13- -3- -14- -3-AC Carnduff CAN-99 51 Small Blue Brown 39.4 49 24.8 19.0 3 MR RAC Emerson CAN-95 50 Medium Blue Brown 38.8 50 25.3 17.7 5 R RAC Hanley CAN-02 50 Small Blue Brown 37.4 45 22.4 17.6 -- MR RAC Watson CAN-97 48 Med-Lg Blue Brown 39.2 48 23.2 17.9 4 MS RCathay ND-97 51 Medium Blue Brown 40.1 53 22.7 17.9 1 R RCDC Arras CAN-00 51 Medium Blue Brown 39.7 51 25.4 18.6 6 R RCDC Bethume CAN-00 51 Medium Blue Brown 40.1 52 24.1 18.1 2 MR RCDC Mons CAN-03 -- -- Blue Brown -- -- -- -- -- -- RCDC Normandy CAN-96 48 Med-Sm Blue Brown 38.9 51 25.5 18.2 4 MR RCDC Valour CAN-97 46 Medium Blue Brown 38.8 46 21.1 16.6 5 S RDay SD-90 47 Small Blue Brown 40.4 49 22.5 18.3 3 MR RLinora CAN-92 48 Med-Sm Blue Brown 39.7 50 25.7 19.4 3 MR RLinott CAN-66 47 Med-Sm Blue Brown 39.6 51 22.3 17.7 4 MS RMcGregor CAN-82 53 Medium Blue Brown 38.6 52 22.6 16.9 2 MR RNeche ND-88 49 Small Blue Brown 39.8 51 23.9 19.0 2 MS RNekoma ND-02 50 Med-Sm Blue Brown 40.1 51 24.2 18.3 1 MR ROmega ND-90 49 Medium Blue Yellow 39.8 50 23.1 18.7 3 MS RPembina ND-97 51 Med-Sm Blue Brown 39.5 52 21.7 16.4 2 R RPrairie Blue CAN-03 -- -- Blue Brown -- -- 23.9 -- -- MR RPrompt SD-89 44 Small Blue Brown 39.4 47 22.5 18.1 2 MR RRahab 94 SD-94 51 Medium Blue Brown 40.1 49 25.6 18.0 1 MR RSelby SD-00 51 Medium Blue Brown 40.3 53 23.5 18.6 2 MR RVerne 93 SD-93 47 Med-Sm Blue Brown 39.9 51 23.2 19.0 3 R RWebster SD-98 52 Med-Sm Blue Brown 39.9 55 22.8 17.8 3 MR RYork ND-02 52 Medium Blue Brown 39.3 49 24.1 18.5 2 MR RExperimentalsN0010 ND-exp. 48 Small Blue Yellow 39.2 49 22.5 18.8 -- S RFP1096 CAN-exp. 51 Medium Blue Brown 40.3 51 24.0 17.2 -- MR RN0009 ND-exp. -- -- Blue Yellow -- -- 23.1 -- -- MS RGrand Mean 50 39.5 50 23.5 18.1 3LSD.05 2 0.6 2 ns ns 2C.V. 2.6 1.8 4.8 13.3 13.9 40* Lodging rated on a scale of 1 to 9, where 1=no lodging and 9=flat.

South Dakota Flax Variety Evaluations 2009

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South Dakota Flax Variety Evaluations 2009

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