Varietal Trials Results

Varietal Trials Results January 2008 Wheat, Hard Red Spring Jim Anderson, Jochum Wiersma, Gary Linkert, Catherine Springer and Susan Reynolds differ for their response to each of those diseases, the rating does not differentiate among them. Consequently, the rating should be used as a general indication and only for varietal selection in areas where these diseases have been a problem or if the previous crop was wheat or barley. Table. Origin and agronomic characteristics of hard red spring wheat varieties in Minnesota in single-year and multiple-year comparisons (2005-2007). Spring wheat varieties are compared in trial plots at Waseca, Lamberton, Morris, Crookston, Stephen, Roseau and St. Paul, where they are grown in replicated plots at each location. These plots are handled so that the factors affecting yield and other characteristics are as nearly the same for all varieties at each location as possible. These hard red spring wheat trials are not designed for crop (species) comparisons, because the various crops are grown on different fields or with different management. The data should only be used to compare varieties within a table. Tested hard red spring wheat varieties are listed in the tables in the order of their flowering date. Variety Selection Criteria While grain yield is an important economic trait, return per acre also is affected by grain quality. Fusarium Head Blight (FHB), or scab, is an important consideration because it can reduce grain quality and yield dramatically. The foliar disease rating, which represents the total complex of leaf diseases other than leaf and stripe rust, includes the Septoria complex, tan spot, powdery mildew, and bacterial blight. Although varieties may Days to Height Straw Variety Origin PVP Status Heading 2 inches 2 strength 3 Rush 2006 WestBred PVP (94) 53 29 Very Strong Ulen 2005 MN PVP (94) 53 32 Medium Kelby 2006 AgriPro PVP (94) 53 28 Strong Briggs 2002 SDSU PVP (94) 53 32 Medium Trooper 2004 WestBred PVP (94) 53 29 Very Strong Samson 2007 WestBred PVP (pend) 53 29 Traverse 2006 SDSU PVP (94) 54 34 Medium Banton 2004 Trigen PVP (94) 54 32 Strong Glenn 2005 NDSU PVP (94) 54 34 Strong Oklee 2003 MN PVP (94) 54 3 Medium Granger 2004 SDSU PVP (94) 54 35 Medium Oxen 996 SDSU PVP (94) 54 3 Medium Strong Norwell 2006 Thunder Seed PVP (pend) 54 34 Steele-ND 2004 NDSU PVP (94) 55 33 Medium Freyr 2004 AgriPro PVP (94) 55 32 Medium Howard 2006 NDSU PVP (94) 55 32 Medium Kuntz 2007 AgriPro PVP (94) 55 29 Alsen 2000 NDSU PVP (94) 55 32 Strong Knudson 200 AgriPro PVP (94) 55 30 Medium Strong FBC-Dylan 2006 NPSAS/FBC none 55 3 Medium Ada 2006 MN PVP (94) 55 3 Medium Strong Blade 2007 WestBred PVP (pend) 55 3 RB07 2007 MN PVP (pend) 55 30 Medium Strong Bigg Red 2004 WestBred PVP (94) 55 34 Medium Faller 2007 NDSU PVP (pend) 56 32 Medium Strong Hat Trick 2007 Trigen PVP (pend) 56 30 Strong Cromwell 2007 Thunder Seed PVP (pend) 57 3 Granite 2002 WestBred PVP (94) 57 29 Very Strong Fireball 2006 N. Star G. PVP (94) 57 29 Strong Marshall 982 MN none 58 30 Strong Vantage 2007 WestBred PVP (pend) 58 29 Very Strong Hot Shot 2007 N. Star G. PVP (pend) 58 30 Polaris 2003 N. Star G. PVP (94) 6 3 Very Strong Bakker Gold 2006 N. Star G. PVP (94) 6 3 Very Strong Mean 55.4 3. Abbreviations: MN = Minnesota Agricultural Experiment Station; NPSAS/FBC = Northern Plains Sustainable Agriculture Society/Farmer Breeder Club; N. Star G. = North Star Genetics; NDSU = North Dakota State University Research Foundation; SDSU = South Dakota Agricultural Experiment Station; Trigen = Trigen Seed Services LLC. 2 2007 data. 3 2005-2007 data. 42

Control of leaf diseases with fungicides may be warranted, even for varieties with an above-average rating. Disease ratings are now on a - 9 scale where = most resistant and 9 = most susceptible. Rating differences of 2 or more should be considered significant. Variety selection for 2007 continues to be a balance between yield potential, disease responses and grain quality. Leading varieties in Minnesota, based on acres planted, include Freyr, Oklee, Knudson, Glenn, Briggs, and Alsen. New releases for 2007 are Blade (WestBred), Cromwell (Thunder Seed), Faller (NDSU), Hat Trick (Trigen), Hot Shot (North Star Genetics), Kuntz (AgriPro), RB07 (MN), Samson (WestBred), and Vantage (WestBred). Leaf rust caused substantial damage on susceptible varieties in 2007. Varieties with ratings of 5 or higher should be closely monitored during the season for rust development. Varieties with ratings of 4 or better should not experience economic levels of damage in most years. Stripe rust was a serious problem on susceptible varieties in some locations in 2004. This disease is not as widespread and does not occur as regularly as leaf rust, but can be very damaging when temperatures remain unseasonably cool into early July. Most varieties are resistant or moderately resistant. Stem rust ratings are included in the disease tables because there are differences in variety reaction. The levels of this disease have been very low in production fields in recent years, even on susceptible varieties. Due to the increased use of fungicides in wheat in Minnesota, we initiated an additional variety trial in 2004 in which fungicides are applied at the time of herbicide application (Feekes 5), flag leaf emergence (Feekes 9), and at the onset of flowering (Feekes 0.5). The practice of three fungicide applications during the growing season is not recommended. This fungicide regime was implemented to measure performance of varieties Table 2. Grain quality of hard red spring wheat varieties in Minnesota in single-year (2007) and multiple-year comparisons (2006-2007). Test Weight (Lb/Bu) Protein (%) Baking Pre-Harvest Variety 2007 2-Year 2007 2-Year Quality 2 Sprouting 3 Rush 6.6 6.5 4.7 4.7 Medium-High 2 Ulen 60.0 60.5 4.8 4.7 Medium 5 Kelby 6. 6.0 4.9 4.8 Medium 2 Briggs 6.3 6.4 5.0 4.6 Medium 2 Trooper 6.6 6.7 3.8 3.9 Medium-High 2 Samson 59.6 3.9 3 4 Traverse 58. 58.6 3.8 3.6 Low 4 Banton 62.2 62.3 4.7 4.6 High-Medium 3 Glenn 63.2 63.4 5.7 5.2 High Oklee 60.8 6.0 4.8 4.8 Low-Medium 3 Granger 60.8 6.0 4.5 4.5 Medium 4 Oxen 57.8 59. 4.3 4.3 High-Medium 2 Norwell 60.6 4.2 4 Steele-ND 6.4 6.7 5.3 4.9 High 2 Freyr 60.0 60.5 4.4 4.3 Medium Howard 6.5 6.7 5.0 4.8 Medium-High Kuntz 60.2 4.0 2 4 Alsen 60.8 6.2 5.2 4.9 High 2 Knudson 60.8 60.9 4. 4.0 Medium-High 3 FBC-Dylan 59.9 60.6 4. 4. Medium-Low 3 Ada 6.4 6.7 4.3 4.3 Medium-High 2 Blade 62.6 4.9 5 4 RB07 60.4 60.6 5.2 4.9 Medium-High 2 Bigg Red 6.9 62. 3.4 3.4 Medium-Low 4 Faller 60.9 60.7 4.3 4.0 Medium 2 Hat Trick 6.2 6.5 4. 4. Medium-Low 4 Cromwell 6.6 4.8 3 4 Granite 62.0 62. 5.3 5.2 Medium-Low 2 5 Fireball 58.2 58.8 5.8 5.5 Medium 5 Marshall 57.3 58.7 3.5 3.4 Low 2 Vantage 6.8 5.3-2 4 Hot Shot 58.6 2.9 4 Polaris 58.4 59. 3.3 3.3 Medium Bakker Gold 58.5 59.2 3.4 3.4 Low Mean 60.5 60.8 4.4 4.4 2% moisture basis. 2 200-2006 crop years. 3-9 scale in which is best and 9 is worst. Values of -3 should be considered as resistant. 4 These ratings are based on -year data (2007). The rating may change by as much as after additional data is collected. 5 Granite s falling numbers are typically 25-50 seconds (on a scale to 400) less than other varieties. 43

when fungal diseases were controlled to the maximum extent possible. Grower s decisions regarding fungicide applications should be based on the available decision-support systems, and fungicides applied only if and when disease levels are forecasted to reach economic damaging levels. The additional performance evaluations were carried out adjacent to the conventional (no fungicides applied) trials, so results can be compared directly. The trials were conducted in Lamberton, Morris, Crookston and Roseau in 2007. The fungicide regime as applied in these trials increased grain yield on average by more than 9 bu/acre. The 2- and 3-year comparisons showed an increase in grain yield of 6 to 7 bu/acre. Rather than the average increases in grain yield, the responses of individual varieties provide the most useful information; varieties rated susceptible to leaf rust and other leaf diseases benefited most from fungicide applications. Test Plot Research Test plot establishment and management were supervised by John Wiersma, George Nelson, Steve Quiring, Tom Hoverstad, Donn Vellekson, Galen Thompson and Derek Crompton. Table 3. Disease reactions of hard red spring wheat varieties in Minnesota in multiple year comparisons (2005-2007). Variety Leaf Rust Stripe Rust Stem Rust 2 Other Leaf Diseases 3 Scab Rush 5 4 5 5 Ulen 4 6 6 Kelby 3 4 5 Briggs 2 4 5 Trooper 6 7 8 4 6 Samson 5 Traverse 5 2 5 5 Banton 3 5 5 Glenn 4 3 Oklee 5 5 5 Granger 3 4 5 Oxen 7 3 7 8 Norwell 7 7 Steele-ND 4 6 Freyr 4 4 4 4 Howard 4 6 Kuntz 3 4 Alsen 5 6 4 Knudson 2 3 3 3 6 FBC-Dylan 7 7 7 Ada 4 2 4 4 6 Blade 2 RB07 4 5 Bigg Red 8 2 7 3 Faller 3 4 Hat Trick 4 3 5 4 4 Cromwell 5 Granite 6 3 3 5 5 6 Fireball 5 3 6 Marshall 8 7 7 Vantage 4 Hot Shot 7 7 Polaris 6 8 4 7 Bakker Gold 5 7 5 5-9 scale where =most resistant, 9=most susceptible. 2 This rating is based on limited data. 3 Includes tan spot, septoria, bacterial leaf blight, and powdery mildew. 4 These varieties are more susceptible to powdery mildew. 5 This variety is more susceptible to bacterial leaf blight. Hard red spring wheat planting rate and date. Calculating and seeding the appropriate amount of seed is an important first step towards maximizing yield. The seeding rate is a function of the number of kernels per pound of seed, the percent germination of the lot, the expected stand loss as a function of the quality of the seedbed, and the desired stand. In Minnesota, an average optimum stand for hard red spring wheat when planted early is between 28 to 30 plants per square foot or approximately.25 million plants per acre. This number should increase by to 2 plants per square foot for every week planting is delayed past the early, optimum, seeding date. Expected stand loss even under good seedbed conditions is between 0% to 20% and will increase with a poor seedbed or improper seed placement due to poor depth control. The general formula for calculating a seeding rate is: Seeding Rate (Pounds/Acre) = Desired Stand (Plants/Acre) x ( Expected Stand Loss) (Seeds/Pound) x Percentage Germination Calculate the seeding rate for every single seed lot and calibrate the drill accordingly. Example: Early variety. Desired Stand, (Plants/Acre) Expected Seeds per Percentage Stand Loss Pound Germination.25 million 0.20 4,000 0.95 3 44 Seeding Rate, (Lb/Acre)

Table 4. Relative grain yield, percent of the mean, of hard red spring wheat varieties in northern Minnesota locations. Crookston Roseau Stephen On-Farm Variety 2007 2-Year 3-Year 2007 2-Year 2007 2-Year 3-Year 2007 2-Year 3-Year Rush 90 88 08 94 93 97 97 94 Ulen 97 98 98 05 07 98 02 97 03 0 0 Kelby 0 02 20 02 97 93 94 98 Briggs 03 0 05 27 4 02 04 00 04 09 05 Trooper 92 99 98 00 89 05 94 97 92 98 97 Samson 4 09 7 3 Traverse 6 9 7 2 5 2 9 8 Banton 97 97 97 04 0 94 95 97 94 0 97 Glenn 00 96 98 98 05 90 94 99 02 02 0 Oklee 96 96 00 03 96 94 95 96 98 0 00 Granger 95 94 02 05 05 9 97 03 00 07 05 Oxen 97 02 0 79 92 97 03 04 95 96 94 Norwell 97 84 93 90 Steele-ND 0 03 02 06 09 96 02 99 08 05 Freyr 09 03 06 03 0 0 99 06 08 03 03 Howard 00 05 06 07 09 0 07 05 Kuntz 3 95 99 2 Alsen 89 92 94 80 93 90 93 92 93 95 94 Knudson 09 08 09 06 2 09 0 3 09 07 FBC-Dylan 93 95 87 96 9 95 95 Ada 95 96 00 03 00 97 92 95 0 99 98 Blade 0 06 07 07 RB07 0 09 0 86 90 06 3 0 08 09 09 Bigg Red 93 94 73 88 93 92 86 86 95 Faller 3 8 27 20 26 4 8 Hat Trick 93 87 89 89 7 98 06 06 03 Cromwell 0 8 98 07 Granite 96 99 02 94 92 08 97 99 92 94 89 Fireball 98 94 85 96 88 92 92 94 Marshall 72 85 87 73 83 83 82 80 63 74 Vantage 02 9 04 95 Hot Shot 83 73 92 84 84 Polaris 85 88 00 90 98 93 98 92 92 94 Bakker Gold 89 88 93 0 04 0 96 97 94 Mean (Bu/Acre) 76.7 76.3 7.8 49. 63.9 69.0 69.5 72.8 77.7 69.4 68.8 LSD (0.05).2 4.4 3.5 2.5 2.5 2.6 7.0 9.0 9.9 4.3 3. The 2005 Roseau trial was lost due to flooding. 45

Table 5. Relative grain yield, percent of the mean, of hard red spring wheat varieties in southern Minnesota locations. Lamberton Morris St. Paul Waseca Variety 2007 2-Year 3-Year 2007 2-Year 3-Year 2007 2-Year 3-Year 2007 2-Year 3-Year Rush 92 90 93 88 96 93 95 89 Ulen 0 00 05 97 03 02 05 07 09 08 3 9 Kelby 02 94 94 84 34 7 6 06 Briggs 23 5 6 07 08 05 05 0 02 04 Trooper 7 73 73 05 06 08 83 99 00 74 82 8 Samson 08 06 03 08 Traverse 6 22 35 4 5 20 00 05 03 2 7 22 Banton 9 88 96 97 90 96 6 07 05 95 93 96 Glenn 04 96 94 86 82 84 0 93 03 02 94 02 Oklee 88 9 00 94 95 97 2 03 00 8 09 4 Granger 20 6 8 2 05 05 99 97 97 24 6 29 Oxen 87 89 85 96 06 96 6 3 99 85 95 97 Norwell 92 95 09 00 Steele-ND 3 09 5 06 07 3 05 4 9 08 4 Freyr 0 02 09 03 09 09 06 00 95 98 99 Howard 09 2 98 07 06 6 09 2 2 09 7 Kuntz 03 07 00 98 Alsen 90 93 90 9 89 94 93 92 95 95 99 97 Knudson 26 7 08 2 09 0 87 94 05 99 0 0 FBC-Dylan 82 87 94 05 0 98 85 9 Ada 06 08 05 99 0 80 92 87 6 79 89 Blade 09 02 04 04 RB07 07 08 4 88 00 95 06 0 98 97 03 Bigg Red 93 97 99 99 0 98 05 0 Faller 33 23 20 5 07 09 9 Hat Trick 2 03 0 05 8 87 5 07 Cromwell 86 97 98 89 Granite 03 04 09 97 9 94 03 99 97 07 07 0 Fireball 88 89 90 97 95 92 89 9 Marshall 64 7 60 69 83 7 72 87 73 47 72 58 Vantage 98 97 80 89 Hot Shot 73 82 77 68 Polaris 86 97 84 89 05 99 59 76 83 66 89 83 Bakker Gold 79 93 9 95 58 77 70 88 Mean (Bu/Acre) 76.7 46.7 42.2 70.8 68.9 58.6 59.9 75.9 66.8 52.0 59.8 52.5 LSD (0.05) 7.5 6.8 9.3 0.7 7.3 6. 8.4 9.3 23.7 2.0 24.2 22.6 Table 6. Relative grain yield, percent of the mean, of hard red spring wheat varieties in Minnesota. State North South Variety 2007 2-Year 3-Year 2007 2-Year 3-Year 2007 2-Year 3-Year Rush 95 9 97 93 94 90 Ulen 02 04 05 00 02 97 03 06 09 Kelby 09 00 06 99 00 Briggs 0 08 07 0 09 03 0 07 09 Trooper 90 92 93 99 94 97 83 90 90 Samson 09 4 06 Traverse 3 5 8 4 4 4 3 5 20 Banton 99 96 98 98 98 97 00 95 98 Glenn 97 94 97 96 98 99 98 9 96 Oklee 0 98 0 98 96 98 03 99 03 Granger 07 04 09 97 99 03 4 09 2 Oxen 94 00 97 9 99 03 96 0 94 Norwell 96 9 99 Steele-ND 08 07 08 0 05 0 3 08 2 Freyr 03 03 05 04 0 06 03 04 04 Howard 09 08 0 05 07 05 09 2 Kuntz 02 02 02 Alsen 90 93 94 86 93 93 92 93 94 Knudson 08 06 07 0 08 0 06 05 06 FBC-Dylan 90 95 90 95 9 95 46

Table 6 (continued). Relative grain yield, percent of the mean, of hard red spring wheat varieties in Minnesota. State North South Variety 2007 2-Year 3-Year 2007 2-Year 3-Year 2007 2-Year 3-Year Ada 92 95 97 98 96 97 88 94 97 Blade 05 05 05 RB07 0 03 06 0 04 0 0 03 03 Bigg Red 94 96 86 9 99 99 Faller 23 6 28 7 20 5 Hat Trick 0 97 00 92 02 0 Cromwell 98 06 93 Granite 0 98 00 99 96 0 03 00 00 Fireball 90 93 90 94 90 92 Marshall 68 80 7 76 83 83 63 78 65 Vantage 94 99 9 Hot Shot 78 83 75 Polaris 8 93 93 89 95 06 75 92 87 Bakker Gold 84 92 95 97 75 88 Mean (Bu./Acre) 60.3 65.8 64.0 65.0 70.0 70.0 56.8 65.8 55.0 LSD (0.05) 9.6 6.6 6. 2.2 8.8 9.3 3.9 9.2 0.0 No. of Environments 7 4 20 3 6 8 4 8 2 Table 7. Grain yield (percent of the mean) of hard red spring wheat varieties grown under conventional and intensive management. North South State -Year 2-Year 3-Year -Year 2-Year 3-Year -Year 2-Year 3-Year Variety Conv. Inten. Conv. Inten. Conv. Inten. Conv. Inten. Conv. Inten. Conv. Inten. Conv. Inten. Conv. Inten. Conv. Inten. Rush 60.8 68. 62.8 70.0 - - 53.3 54.3 50.7 50.9 - - 57. 6.2 57.0 60.4 - - Ulen 62.5 73.9 7.8 74.9 69.6 73.0 56.7 59.9 57.2 58.2 54.3 56.2 59.6 66.9 64.8 66.6 62.2 64.9 Kelby 68. 74.0 70.3 75. - - 55.8 59. 50.8 56.3 - - 6.9 66.6 6.0 65.7 - - Briggs 70.2 76.9 77.3 83.3 73.9 80.3 65. 66.2 62.8 63.7 60.3 60.8 67.7 7.6 70.3 73.5 67.3 70.9 Trooper 59.4 79.3 65.4 8.9 64. 78.0 52.9 57.4 52.0 53.6 5.3 52.7 56.2 68.3 59.0 67.8 57.9 65.8 Samson 70. 80.9 - - - - 6.3 69.7 - - - - 65.7 75.3 - - - - Traverse 7.6 76.6 79.4 80.6 - - 66. 78.3 67. 73.5 - - 68.9 77.4 73.5 77.0 - - Banton 62.4 73.7 69.0 78.8 67. 76. 54.6 57.5 5.2 54. 50.2 52.5 58.5 65.6 60.5 66.4 58.9 64.7 Glenn 62. 67.6 70.6 70.5 69.3 69.5 53.3 58.5 50.3 54.2 47.6 52.4 57.7 63. 60.9 62.4 58.8 6.2 Oklee 6.9 72.5 66.8 72.6 67.0 70.6 52.8 6.8 53.0 59.9 50.9 58.3 57.4 67. 60.2 66.2 59.2 64.6 Granger 6.9 67.3 69.6 73.3 70.3 73.2 66.2 70.9 63.0 68.7 59.3 65.9 64.0 69. 66.4 7.0 65.0 69.7 Oxen 56.4 76.5 69.3 85.7 67.9 80.5 53.4 72.5 55.2 68.8 50.7 66.4 54.9 74.5 62.6 77.3 59.6 73.7 Norwell 57.5 64.3 - - - - 54. 68.4 - - - - 55.8 66.4 - - - - Steele-ND 64.7 70.8 74.6 79.0 72. 75.0 62.7 63.0 62.2 60.5 58. 57.4 63.7 66.9 68.7 69.8 65.3 66.5 Freyr 66.6 76.6 7.4 80.3 70.9 76.9 58.9 66.0 59.9 65.4 57.2 62.9 62.7 7.3 65.9 72.9 64.3 70.2 Howard 64.2 74.3 75. 78.0 - - 59.0 67.8 60.6 66.7 - - 6.6 7.0 68. 72.3 - - Kuntz 66.2 75.2 - - - - 60.7 60.5 - - - - 63.5 67.8 - - - - Alsen 53.6 62.9 65.6 70.9 - - 52.4 6.0 5.9 58.2 - - 53.0 62.0 59. 64.5 - - Knudson 68. 75.0 75. 80.9 74.5 78.8 67.5 73.5 64.0 67.2 62.0 64.9 67.8 74.3 69.8 74. 68.5 72. FBC-Dylan 56.5 73.7 67.6 75.9 - - 5.4 62.0 54.2 63. - - 53.9 67.8 6.2 69.5 - - Ada 6.4 76.5 66.7 8.2 64.8 69.6 60.7 62.4 58.9 62.3 50.5 55.7 6.0 69.4 63.0 7.8 57.9 62.9 Blade 64.7 65.8 - - - - 60.4 66. - - - - 62.6 66.0 - - - - RB07 62.8 65.6 - - - - 54.8 60. - - - - 58.8 62.9 - - - - Bigg Red 53. 68.7 65.2 77.0 - - 55.4 69.7 55.7 64.2 - - 54.3 69.2 60.7 70.6 - - Faller 8.0 83.4 - - - - 72.0 73.6 - - - - 76.5 78.5 - - - - Hat Trick 57.3 67.3 - - - - 60.6 66.0 - - - - 58.9 66.7 - - - - Cromwell 67.4 73.2 - - - - 53.5 56.8 - - - - 60.4 65.0 - - - - Granite 59.7 69.9 66.5 74.0 66.7 72.9 57.3 67.0 55.4 62.4 54.6 60.5 58.5 68.4 6.2 68.2 60.9 66.9 Fireball 58.2 62.7 - - - - 5.2 58.9 - - - - 54.7 60.8 - - - - Marshall 45. 77.7 59.7 8.5 59. 80.0 38.6 6. 43.3 60.6 38.5 58.5 4.9 69.9 5.9 7.0 49.2 69.6 Vantage 6.2 68.4 - - - - 56. 67.2 - - - - 58.7 67.8 - - - - Hot Shot 49.4 78. - - - - 44.9 74.0 - - - - 47.2 76.0 - - - - Polaris 54.4 68.8 65.6 77.7 67.8 78.9 50.5 75.4 56.6 69.8 54.2 67. 52.4 72. 6.3 73.7 6.2 73.2 Bakker Gold 56.7 62.2 - - - - 49.8 6.6 - - - - 53.3 6.9 - - - - Mean 6.7 72.0 69.3 77.4 68.3 75.6 56.6 65.0 56.2 6.9 53.3 59.5 59. 68.5 63.0 69.7 6. 67.8 LSD 9.6.0 9.3 7.5 8.5 5.7 7.2.8 5.8 7.8 4.8 7.2 5.8 8.6 4.8 5.3 4.6 4.7 Env. 2 2 4 4 6 6 2 2 4 4 6 6 4 4 8 8 2 2 Intensive trials received fungicide treatments at Feekes 5 (Stratego @ 5 fl.oz/acre), Feekes 9 (Tilt @ 4 fl.oz/acre), and Feekes 0.5 (Folicur @ 4 fl.oz./acre). Conventional trials received no fungicide. 47