Blackleg Evaluations

Arlington, Georgia: Canola Variety Trial, 1996-97 ____________________________________________________________________________________________ Company or Test Plant Brand Name Variety Yield1 Blackleg2 Oil Wt. Bloom Maturity Ht. Lodg.3 Shatter4 ____________________________________________________________________________________________ lb/A % % lb/bu date date in rating % UGA G96202 3202 18 40.0 50.4 . . 66 1.9 0 UGA RPX04-2-7 3035 10 40.5 49.8 . . 58 1.3 0 UGA G96200 3000 15 40.2 50.9 . . 64 1.4 0 UGA RPX06-5-1 2749 23 38.6 51.2 . . 66 1.4 0 UGA G96203 2649 20 39.0 51.1 . . 63 1.4 0 AG-Seed Dunkeld 2145 18 42.3 49.9 . . 51 1.6 0 UGA G96198 2100 28 40.1 49.1 . . 59 1.6 0 Calgene Oscar 1942 13 39.6 50.0 . . 49 1.9 0 UGA CL87-24 1733 40 40.9 49.8 . . 55 2.3 0 UGA CL104-11 1726 45 40.2 50.4 . . 51 2.3 0 UGA CL100 1543 48 40.3 50.4 . . 58 3.1 0 UGA G96225 1509 75 40.9 48.3 . . 59 3.0 0 UGA CL106-6 1482 38 40.2 49.9 . . 58 2.1 0 Hungnong Seed HN 9466 1228 58 41.6 48.5 . . 52 3.3 0 Calgene Cyclone 1140 75 42.5 47.4 . . 55 3.8 0 UGA 188-20BC 463 90 39.2 . . . 49 5.0 0 Average 19785 38 40.4 49.8 . . 57 2.3 0 LSD at 10% Level 335 10 1.1 0.5 3 0.7 - Std. Err. of Entry Mean 132 4 0.5 0.2 2 0.3 - ____________________________________________________________________________________________ 1. Yields calculated as 50 lb/bu at 8.5% moisture. 2. Blackleg rated as total percentage of plants killed by blackleg or with severe basal stem canker. 3. Lodging rating: 1.0 = no lodging to 5.0 = all plants down. 4. Shattering %: Estimated yield lost to shattering. 5. C.V. = 13.5% and df for EMS = 38. C = Included as a susceptible check. Planted: October 30, 1996. Harvested: June 4, 1997. Seeding Rate: 5 lb/acre. Soil Test: P = Very High, K = Very High, and pH = 5.4. Fertilization: Preplant: 60 lb N, 60 lb P2O5, 60 lb K2O, and 10 lb S/acre. Topdress: 50 lb N and 10 lb S/acre on January 21, 1997 and 120 lb N and 30 lb S/acre on February 6, 1997. Previous Crop: Canola. Test conducted by C. B. Hill, D. Spradlin, B. Dowell, W. Davis, and P. L. Raymer. NOTE: This variety test was located directly adjacent to a Phoma blackleg disease nursery that was inoculated by spreading infected stubble over the field shortly after planting.



Field Ratings for Resistance to Phoma Blackleg
____________________________________________________________________

                                   Blackleg Rating1
Company or                   -----------------------------          
Brand Name       Variety     Griffin   Midville  Arlington   Average
____________________________________________________________________
                              ----------- % ------------        %

State Spring Commodity Canola Trial Entries
  Interstate     Brigade        60        13        60          44
  Interstate     Crusher        53        37        47          46
  Interstate     Defender       57        13        40          37
  UGA            G96198         37        10        13          20
  UGA            G96200          7         3         0           3

  UGA            G96202         10         0         7           6
  UGA            G96203         17         3         7           9
  UGA            G96214         77        25        37          46
  UGA            G96225         60        27        30          39
  Hungnong Seed  HN 9466        53         7        17          26

  Interstate     Impulse        63        23        67          51
  Ag. W.A.       Narendra       57        37        23          39
  UGA            RPX 04-2-7      7         0         7           4
  UGA            RPX 06-5-1     10         0         7           6
  OAC            SC95-04        40        23        47          37

  Svalof         Sponsor        70        17        63          50

  Checks
    AG Seed      Dunkeld        30         4        24          19
    Ag Canada    Westar          .        78        85           .

State Laurate Canola Trial Entries

  Calgene        LA 910          .        43         3          23
  Calgene        LA 161          .        73        83          78
  Calgene        LA 128          .        90        73          82
  Calgene        LA 269          .        93        87          90
 
  Check
    Calgene      Oscar           .        70        20          45

Southeastern Regional Uniform Spring Canola Trial Entries

  Interstate     Brigade        77        40        50          56
  UGA            CL100          10        23        37          23
  UGA            CL106/6        13        10        23          16
  Interstate     Crusher        65        30        60          52
  Calgene        Cyclone        90        17        68          58
 
  Interstate     Defender       88        23        66          59
  Limagrain      Ebony          57        13        30          33
  Hungnong Seed  HN 9466        40        17        33          30
  Interstate     Hyola 308       .        50        87           .
  Interstate     Hyola 330       .        60        87           .


  Interstate     Hyola 401      90        60        80          77
  Interstate     Hyola 420       .        37        80           .
  Interstate     Hysyn 100       .        90        80           .
  Interstate     Hysyn 110      90        83        90          88
  Interstate     Impulse        70        37        77          61

  Interstate     IP3589          .        37        87           .
  Limagrain      Jewel          37        17        50          34
  Svalof         Legacy         70        37        57          54
  Svalof         Legend         87        20        70          59
  Limagrain      LG 3310        70        17        63          50

  Limagrain      Magnum         70        20        67          52
  Svalof         Norseman       60        47        80          62
  UGA            RPX 04-2-7      3         0         7           3
  UGA            RPX 06-5-1     35         3        10          16
  Ag Canada      Tobin          80        88        82          83

  Checks
    AG Seed      Dunkeld        25        10        18          18
    Calgene      Oscar          40        12        27          26
    Ag Canada    Westar          .        85        90           .
    UGA          188-20B        85        68        87          80

State Winter Commodity Canola Trial Entries

  Calgene        Falcon         10        20         .          15
  UGA            G96008         23        13         .          18
  UGA            G96010         20        13         .          17
  UGA            G96012         13        23         .          18
  UGA            G96016         30        27         .          28

  Calgene        Jetton         10        20         .          15
  Calgene        ST9/94         23        10         .          17
  UGA            514-69B         .         .         .           .
  Calgene        W4689E         25         7         .          16
  UGA            488-7H         10        20         .          15

  Checks
    Calgene      Cyclone        10        50         .          30
    AG Seed      Dunkeld         .        17         .           .
    UGA          188-20B        30        70         .          50

Advanced Winter Canola Variety Trial Entries

                 Aspen          30        46         .          38
                 Bor            24        30         .          27
                 Bridger        20        28         .          24
                 Casino         15        17         .          16
                 Ceres          18        13         .          16

                 Debut          74        45         .          60
                 Ericka         22        12         .          17
                 Falcon         18        15         .          16
                 Jetton         10        15         .          13
                 Kaystar 11     17        12         .          14
          
                 KS1701         15        20         .          18
                 KS3203         17        17         .          17
                 KS3505         17        23         .          20
                 KS3579         20        28         .          24
                 KS3580         17        15         .          16

                 Leo            24        23         .          24
                 MO-503-1       18        16         .          17
                 MO-503-9       30         .         .           .
                 MO-513-9       24        30         .          27
                 PI535849       27        22         .          24
          
                 Polo           26        35         .          31
                 Selkirk        13        18         .          16
                 ST 9/94        18        20         .          19
                 Winfield       20        17         .          18
                 W4689E         23        17         .          20
          
                 Checks
                   Dunkeld      20        23         .          22
                   Oscar         .        15         .           .
                   Cyclone       .        50         .           .
                   Westar       90        85         .          88
                   188-20B       .        83         .           .
____________________________________________________________________
         
1.  Blackleg rated as total percentage of plants killed by blackleg or with severe 
    basal stem canker.

NOTE:  These nurseries were located on or adjacent to fields infected with Phoma 
       blackleg the previous season.  Disease severity was further increased by 
       spreading infected stubble over the nurseries shortly after planting.

Data collected by D. V. Phillips, C. B. Hill, L. Denmon, and D. Spradlin.