Field performance of commercial and experimental sugarbeet varieties in rhizomania conditions,

USDA-ARS, Salinas, CA, 2000.1
Root Sugar Gross Harvest
Yield Content Sugar Count Beets/ Rhizomania Resistance3
VARIETY COMPANY (T/A) (%) (lbs/A) Number2 100' row2 DI %R (0-4)
Idaho Varieties 
Crystal 9906 ACH Seeds 21.85 17.45 7611 35 167 3.12 89.0
Crystal 9908 ACH Seeds 28.00 17.48 9707 36 167 3.32 87.0
Beta 4006R Betaseed 22.98 17.60 8099 27 132 3.35 87.8
Beta 4035R Betaseed 28.69 16.34 9316 37 165 3.23 85.7
Beta 4490R Betaseed 26.78 18.13 9710 41 186 3.01 96.3
Beta 8CG7299 Betaseed 24.08 17.89 8601 32 177 3.05 95.4
Beta 7KJ5073 Betaseed 28.38 17.73 10059 39 177 2.96 98.0
HM 125RzRR Hilleshog 26.57 16.85 8979 36 168 3.17 86.7
HM 2980 Hilleshog 25.94 17.52 8995 35 161 3.08 93.8
HM 2983Rz Hilleshog 24.87 16.63 8257 33 161 3.97 60.6
HM 2984Rz Hilleshog 28.40 16.38 9302 36 165 3.59 74.3
HM 2985Rz Hilleshog 21.00 16.83 7039 31 152 4.10 58.2
SX 1517 Seedex 21.84 16.66 7218 34 165 3.33 86.3
Resistant Checks
Beta 4430R Betaseed 27.95 18.08 10059 41 181 2.87 95.2
Beta 4776R Betaseed 31.08 17.70 11010 40 187 3.09 95.4
Rizor Spreckels 27.84 17.84 9914 37 117 3.14 93.2
Susceptible Checks
KW 6770 Betaseed 19.28 16.41 6307 37 168 5.03 21.5
Monohikari Seedex 15.95 15.96 5058 35 173 5.49 7.2
Monohikari Seedex 17.92 15.36 5499 38 186 5.25 11.4
US H11 USDA 14.83 14.16 4166 37 186 5.33 7.4
US H11 USDA 15.70 14.39 4537 37 180 5.35 7.3
US H11 USDA 14.81 13.52 4100 35 186 5.77 4.3
Mean 24.78 17.05 8510 36 171 3.57 75.4
LSD (0.05) 5.20 1.11 1791 5 19 0.37 12.0
CV (%) 15.0 4.7 15.0 10.8 8.0 7.4 11.3
F Value 6.18** 9.20** 8.80** 2.50** 3.10** 44.25** 55.20**
When comparing data of two varieties, values must differ by a value equal to or greater than the LSD given at the bottom of each data column.  If they do not, they were probably not different in this test.
1Design was a randomized complete block with 8 replications.  Plots were 1-row, 22 ft long.  The test was planted May 2, 2000 and harvested October 23, 2000.
2Beets/100' of row were calculated from stand counts a few weeks after thinning.  Harvest count is the mean number of roots per plot scored for reaction to rhizomania.
3Four of the eight replications were scored for reaction to rhizomania.  Roots were mechanically lifted and each root was scored on a scale of 0 to 9, where 9 is the most severe.  Roots scored 0 to 4 were considered resistant and 5 to 9 considered susceptible.  Most roots in the resistant category were scored as 3 and most in the susceptible category were scored as 5 to 7. 

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