The success of flax production is affected by choice of variety. Carefully examine variety characteristics such as seed yield, oil content, and maturity. In some cases oil content or maturity 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 Extension12-1-2004South Dakota Flax Variety Evaluations 2004Kathleen 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 2004" (2004). Extension Extra. Paper 267.http://openprairie.sdstate.edu/extension_extra/267The success of flax production is affected by choice ofvariety. Carefully examine variety characteristics such asseed yield, oil content, disease resistance, and maturity. Insome cases oil content or other traits may offset a yieldadvantage.YieldEvaluate as much yield data as possible when selecting a variety, looking at relative performance over many loca-tions and years. For example, in this publication, varietycomparisons from 3 years and 4 locations are better thanthose from a single year or location. Consistently goodperformance over many environments is called “yield stability.”Good yield stability means that a variety may or maynot be the best yielder at all locations, but it does rankhigh in yield potential at many locations. A variety thatranks in the upper 20% over all locations exhibits betteryield stability than one that is the top yielder at two locations but ranks in the lower 40% at two other locations.Table 1 presents flax yield data from 2005 for severalsites in South Dakota. Three-year and statewide yield averages also are provided. Table 2 summarizes the characteristics of the varieties included in the performancetrials.To determine if one variety is better than another for a given trait, use the least significant difference (LSD.10)value at the bottom of each data column. The LSD value is a statistical way to indicate if a trait like yield differswhen comparing two varieties. If two varieties differ bymore than the indicated LSD value for a given trait, theywill likely differ when grown again under highly similarconditions.For example, if the trial at Webster could be repeatedexactly as it was in 2005 (see Table 1), the yield ranking ofSelby (27.3 bu/A) and Webster (24.8 bu/A) might changeplaces since their yield difference (2.5 bu/A) is less thanthe indicated LSD value of 3.5 bu/A.However, we would expect Selby (27.3 bu/A) to yieldmore than CDC Valour (23.1 bu/A) if the test was repeat-ed since their yield difference (4.2 bu/A) is greater than the indicated yield LSD value of 3.5 bu/A.In Table 1, the minimum yield of varieties that were inthe top-yielding group at a particular location is printedat the bottom of each data column (when significant dif-ferences in yield were measured). Any variety meeting orexceeding this minimum yield value differed by less thanthe LSD.10 value from the highest-yielding variety in thetest and is therefore considered to be in the top-yieldinggroup. For example, in the 2005 trial at Webster there weresix varieties in the top-yield group. Numerically, Selby hadthe highest yield (27.3 bu/A). However, York, CDCBethume, Webster, CDC Arras, and FP2119 were also inthe top-yield group, because their yields were within oneLSD value (3.5 bu/A) of Selby.If the LSD.10 value is indicated as ‘ns’, it means thatthere were no statistically significant differences in yieldamong the varieties. In other words, the variety yields wereall close enough to each other to be essentially the same,considering the amount of error inherent in the test.When evaluating yield, look at as many trials as possi-ble. It is unlikely that the environmental conditions of atest will repeat in any future year.The coefficient of variability (C.V.) listed at the bottomof the data table is a relative measure of the precision orreliability 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 exceeding15–20% may be considered reliable.1ExEx8055Rev October 2005Plant ScienceSOUTH DAKOTA STATE UNIVERSITY / COLLEGE OF AGRICULTURE & BIOLOGICAL SCIENCES / USDA2005 South Dakota Flax Variety EvaluationsKathleen Grady, oilseed breeder and extension specialistand Lee 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 early varietywill mature properly and exhibit its best yield potentialand 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, seed viability, and freedom frompathogens and weed seed.2Table 1.  2005 and three-year average flax yields(bu/A) at several locations in South Dakota.State- Yield*Origin wide Sta-Variety -Year 2005 2-yr 2005 3-yr 2005 2-yr 2005 3-yr 2005 3-yr Rank bility-2- -3- -2- -3- -4- -10-AC Carnduff CAN-99 25.4 29.8 21.7 21.1 30.8 32.2 23.0 33.7 25.1 28.9 2 3/9AC Hanley CAN-02 23.6 25.9 18.1 20.3 31.6 30.7 21.0 32.5 23.5 27.1 18 1/9AC Watson CAN-97 25.9 25.4 18.9 19.6 22.8 28.8 22.7 34.7 22.5 27.3 16 2/9Carter ND-05 26.0 29.3 22.6 19.9 33.8 32.6 22.5 32.6 26.1 28.1 10 3/9Cathay ND-97 27.6 25.9 20.6 21.3 26.2 26.9 21.5 30.2 23.9 26.1 25 2/9CDC Arras CAN-00 23.6 25.4 22.7 23.1 29.5 35.2 25.2 35.1 25.2 29.4 1 6/9CDC Bethume CAN-00 23.7 26.5 21.7 21.4 21.4 29.7 26.3 34.9 23.2 28.2 8 5/9CDC Mons CAN-03 25.4 28.6 20.3 19.0 29.0 29.7 21.6 32.6 24.0 27.5 14 3/9CDC Normandy CAN-96 28.7 27.7 21.5 24.2 28.0 27.2 22.4 31.3 25.1 27.5 15 3/9CDC Valour CAN-97 25.5 24.8 19.9 20.1 26.7 28.9 23.1 32.7 23.7 26.6 22 1/9Linora CAN-92 21.2 27.0 20.9 23.2 18.8 26.9 20.0 31.3 20.1 27.3 17 3/9Linott CAN-66 25.4 26.5 22.0 21.0 27.0 29.5 22.5 31.4 24.2 26.8 19 1/9McGregor CAN-82 27.2 23.3 19.2 19.6 29.5 31.1 21.7 32.5 24.3 26.7 20 2/9Nekoma ND-02 24.8 28.5 20.2 21.7 33.3 32.5 22.0 29.9 25.0 27.9 11 2/9Omega ND-90 26.4 25.4 19.8 17.7 25.1 24.6 22.1 31.9 23.3 25.5 26 1/9Pembina ND-97 26.1 27.6 20.2 22.6 28.2 31.0 22.2 30.4 24.1 27.7 12 0/9Prairie Blue CAN-03 23.9 29.0 20.7 23.5 26.7 29.8 22.5 30.1 23.4 27.6 13 2/9Rahab 94 SD-94 26.6 26.3 20.0 21.9 32.9 34.6 21.2 33.6 25.1 28.7 4 2/9Selby SD-00 26.8 27.2 22.7 22.6 26.5 30.0 27.3 31.9 25.7 28.3 7 4/9Verne 93 SD-93 25.9 27.7 19.7 22.1 25.5 26.3 19.8 31.1 22.7 26.7 21 1/9Webster SD-98 27.8 28.1 20.3 23.6 29.5 31.8 24.8 32.4 25.5 28.5 6 3/9York ND-02 25.4 27.3 21.4 21.6 33.0 33.4 24.0 33.1 25.9 28.9 3 3/9ExperimentalsFP2112 CAN-exp. 24.4 28.7 22.3 23.4 29.3 30.6 22.5 32.0 24.6 28.5 5 4/9FP2114 CAN-exp. 21.3 23.1 18.9 20.8 29.3 30.4 20.3 31.3 22.4 26.5 23 1/9FP2118 CAN-exp. 22.1 24.9 20.6 21.5 21.9 28.3 19.5 30.4 21.0 26.2 24 3/9FP2119 CAN-exp. 29.3 29.2 17.1 18.6 28.4 30.7 25.1 34.9 24.9 28.2 9 3/9FP2137 CAN-exp. 28.0 -- 20.9 -- 39.0 -- -- -- -- -- -- 3/3N2010B ND-exp. 25.8 -- 19.4 -- 33.3 -- 22.7 -- 25.2 -- -- 1/6N2014 ND-exp. 28.1 -- 19.6 -- 27.4 -- 21.7 -- 24.2 -- -- 1/6N320 ND-exp. 29.5 -- 18.6 -- 28.2 -- 23.1 -- 24.8 -- -- 1/6N325 ND-exp. 24.1 -- 22.1 -- 31.1 -- 22.5 -- 24.9 -- -- 2/6Grand Mean 25.6 26.9 20.4 21.4 28.3 30.1 22.5 32.3 24.0 27.6LSD.10 3.2 ns^ 2.4 ns 4.8 ns 3.5 ns 2.7 nsMinimum yield of top group 26.3 -- 20.3 -- 34.2 -- 23.8 -- 23.4 --C.V. 9.3 11.4 8.7 13.5 12.3 11.2 11.3 10.1 11.2 10.0* Yield stability = number of times in top yield group/total number of tests having significant differences.^ ns = differences among the varieties were not statistically significant.Webster StatewideEarly-seededBrookingsLate-seeded WatertownBrookings3Access at http://agbiopubs.sdstate.edu/articles/ExEx8055-05.pdfIssued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the USDA. Gerald Warmann, Director of Extension, Associate Dean,College of Agriculture & Biological Sciences, South Dakota State University, Brookings. SDSU is an Affirmative Action/Equal Opportunity Employer (Male/Female) and offers allbenefits, 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.  ExEx8055:PDF. October 2005.Table 2.  Characteristics of flax varieties.Origin Days to Seed Height LodgngVariety -Year Flower Size Flower Seed Oil % (cm) 2005 3-yr (1-9)* Wilt Rust-2- -11- -11- -4- -10- -2-AC Carnduff CAN-99 53 Small Blue Brown 40.4 56 25.1 28.9 1.3 MR RAC Hanley CAN-02 51 Small Blue Brown 39.0 52 23.5 27.1 2.2 MR RAC Watson CAN-97 50 Med-Lg Blue Brown 40.5 55 22.5 27.3 1.0 MS RCarter ND-05 51 Small Blue Yellow 40.1 54 26.1 28.1 1.5 MS RCathay ND-97 52 Medium Blue Brown 40.6 57 23.9 26.1 1.0 R RCDC Arras CAN-00 54 Medium Blue Brown 40.5 57 25.2 29.4 1.0 R RCDC Bethume CAN-00 52 Medium Blue Brown 40.3 55 23.2 28.2 1.8 MR RCDC Mons CAN-03 53 Small Blue Brown 40.2 53 24.0 27.5 1.0 MR RCDC Normandy CAN-96 51 Med-Sm Blue Brown 40.2 56 25.1 27.5 1.2 MR RCDC Valour CAN-97 49 Medium Blue Brown 39.5 55 23.7 26.6 2.3 S RLinora CAN-92 50 Med-Sm Blue Brown 40.5 55 20.1 27.3 2.2 MR RLinott CAN-66 51 Med-Sm Blue Brown 40.2 58 24.2 26.8 1.7 MS RMcGregor CAN-82 54 Medium Blue Brown 39.3 56 24.3 26.7 1.0 MR RNekoma ND-02 51 Med-Sm Blue Brown 40.4 54 25.0 27.9 1.0 S ROmega ND-90 51 Medium Blue Yellow 40.6 54 23.3 25.5 1.5 MS RPembina ND-97 51 Med-Sm Blue Brown 40.3 56 24.1 27.7 1.0 R RPrairie Blue CAN-03 51 Small Blue Brown 41.2 54 23.4 27.6 1.0 MR RRahab 94 SD-94 51 Medium Blue Brown 40.8 54 25.1 28.7 1.0 MR RSelby SD-00 52 Medium Blue Brown 40.6 58 25.7 28.3 1.3 MR RVerne 93 SD-93 49 Med-Sm Blue Brown 40.3 55 22.7 26.7 1.8 R RWebster SD-98 54 Med-Sm Blue Brown 40.9 58 25.5 28.5 1.0 MR RYork ND-02 53 Medium Blue Brown 39.2 54 25.9 28.9 1.0 MR RExperimentalsFP2112 CAN-exp. -- Medium Blue Brown 41.1 56 24.6 28.5 2.0 S RFP2114 CAN-exp. -- Large Blue Brown 40.4 52 22.4 26.5 2.2 MR RFP2118 CAN-exp. -- Med-Lg Blue Brown 41.0 56 21.0 26.2 3.0 R RFP2119 CAN-exp. -- Medium Blue Brown 39.6 51 24.9 28.2 1.3 S RFP2137 CAN-exp. -- -- Blue Brown -- -- -- -- -- -- --N2010B ND-exp. -- Medium Blue Brown -- -- 25.2 -- -- MR RN2014 ND-exp. -- Large Blue Brown -- -- 24.2 -- -- MR RN320 ND-exp. -- Med-Sm Blue Brown -- -- 24.8 -- -- -- RN325 ND-exp. -- Medium Blue Brown -- -- 24.9 -- -- -- RGrand Mean 51 40.3 55 24.0 27.6 1.5LSD.10 ns^ 0.4 2 2.7 ns 1.5C.V. 2.3 1.7 5.3 11.2 10.0 85.3* Lodging rated on a scale of 1 to 9, where 1=no lodging and 9=flat.^ ns = differences among the varieties were not statistically significant.DiseaseResistanceYield (bu/A)ColorStatewide Averages

South Dakota Flax Variety Evaluations 2004

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South Dakota Flax Variety Evaluations 2004

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