2001 Red River Valley On-Farm Yield Trials

Following are the results of the 2001 Red River Valley On-Farm Yield Trials. These regional trials were located throughout northwestern Minnesota.  Yield trials for Crookston, Morris and St. Paul were included in the November-December Issue of Prairie Grains, and can be viewed online at www.prairiegrains.com.

About the Trials:
The 2001 Red River Valley On-Farm Yield Trials were grown in 8 locations throughout the region. The locations, cooperators, and planting dates are summarized in Table 1. This year prooved to be a difficult year for conducting high-quality yield trials. Wet weather caused delays in planting and problems with seedbed preparation especially in the northern locations. The trial at Humboldt consequently was not harvested.

Table 1: Locations of the 2001 Red River Valley On-Farm Yield Trials Location Cooperator Planting Date 1 Fergus Falls Don Vigen 05-01-01 2 Ulen Wayne Zimmerman 05-11-01 3 Perley Brian Hest 05-03-01 4 Brooks Ray Swenson 05-10-01 5 Stephen Leif Aakre 05-18-01 6 Thief River Falls Curtis W. Swanson 05-16-01 7 Strathcona Jim kukowski 05-16-01 8 Humboldt Gerald Olsonowski 05-18-01

About the Entries:
The entries of the 2001 Red River On-Farm Yield Trials, including the breeder and the year of release, are listed in Table 2. Two new and recently released cultivars were added for 2000: ‘AC Vista’, a hard white spring wheat from Agriculture and Food Canada and ‘Ozzie’ from Trigen Genetics. Testing of ‘AC Barrie’ and ‘Lars’ was discontinued.

Table 2: Hard Red Spring Wheat entries in the Red River On-Farm Yield Trials (1999-2001). Breeder Cultivar Year Released 1999 2000 2001 Agriculture Canada AC Vista 1997     x AgriPro Gunner 1996 x x x AgriPro Ivan 1998 x x x AgriPro NorPro 2000   x x Cropland Genetics McKenzie 1998   x x Northstar Genetics Mercury 1998   x x Northstar Genetics Dandy 1999   x x NDSU Parshall 1999 x x x NDSU Reeder 1999 x x x NDSU Alsen 2000   x x Pioneer Hi-bred 2375 1990 x x x SDSU Oxen 1996 x x x SDSU Russ 1995 x x x SDSU Forge 1997 x x x SDSU Ingot 1998 x x x SDSU Walworth 2000     x TriGen Genetics Ozzie 1999     x Univ. of Minnesota Marshall 1982 x x x Univ. of Minnesota Verde 1995 x x x Univ. of Minnesota HJ98 1998 x x x Univ. of Minnesota McVey 1999 x x x

Interpretation of the Data:
This year one-year, two and three-year averages are reported. Within the table, the varieties are listed in the order of their maturity. No single location data is presented to avoid misinterpretation of data. Single environment data has to be interpreted with caution.

Performance data across multiple environments; either single location/multiple year, or multiple location/single year, and/or a combination of years and locations is more reliable. Performance data of individual locations is only available upon request. No data may be reproduced without written consent of the author.

In each table, the three highest performers for each trait are printed in bold. The grain yield in each table is expressed as a percentage of the trial mean with the overall mean in bu/A listed below. Presenting the data this way allows for better comparisons over years. Secondly, variety selection is based on the relative ranking of the cultivars, rather than the absolute yield.

Comparisons between varieties should only be made within each column and not between columns or between tables. In addition to the overall mean for the trial, the Least Significant Difference is printed at the bottom of each column. The LSD is calculated using an alpha level of 5%. This indicates that, if and when the observed difference between two varieties is larger than the LSD unit, with 95% confidence the observed difference is a real difference rather than experimental error.

Table 3.  Relative yield expressed as a percentage of the trial mean across alllocations 2001 and multi-year (1999-2001) comparisons and agronomic characteristics of cultivars entered in the Red River Valley On-Farm Yield Trials         3 Year Data     1-year 2-year 3-year Height Lodge Tst. Wt Pro Variety % of Mean (Inches) (1-5) (lbs/bu) (%) Forge 100.9 97.7 103.4 33.2 2.3 58.4 14.0 Ingot 99.3 98.7 107.4 35.4 2.8 60.7 14.8 Oxen 108.1 103.8 115.5 31.8 1.9 57.8 14.7 P2375 101.9 99.5 07.1 31.8 3.7 58.7 14.5 Alsen 96.3 93.0 - - - - - Dandy 105.9 103.4 - - - - - Walworth 108.5 - - - - - - McKenzie 89.8 88.8 - - - - - Mercury 106.8 108.3 - - - - - Parshall 95.2 93.5 101.1 35.9 2.1 59.6 14.9 Reeder 104.9 103.0 109.9 33.1 1.8 57.5 15.0 Russ 98.8 97.9 110.7 34.4 2.5 57.5 14.4 HJ98 96.0 104.3 109.3 31.8 3.5 56.9 14.3 NorPro 104.9 107.2 - - - - - Verde 97.1 100.2 107.3 32.0 2.2 57.9 13.9 Ivan 101.0 105.6 116.3 31.2 1.5 57.7 13.4 Ozzie 88.6 - - - - - - Marshall 95.9 98.9 101.5 30.5 2.5 56.4 14.2 McVey 100.4 106.5 113.6 33.1 3.4 56.2 13.3 Gunner 93.1 89.8 89.1 34.5 2.3 58.0 15.6 AC Vista* 101.3 - - - - - - LSD (5%) 9.7 6.4 7.7 0.7 - 0.7 0.3 Mean (bu/A) 59.8 66.7 55.5 - - - - * AC Vista is a hard white spring wheat.