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Table 4. Visual root scores for wheat grown at three locations in southwestern North Dakota, 1997.
--Root disease rating1-- | ||||
Treatment | Five leaf stage | Soft dough stage | Color index2 | Root mass3 |
Beach | ||||
Fumigated | 0.333 | 0.356 | 1.667 | 3.167 |
Natural | 0.493 | 1.000 | 2.333 | 2.667 |
Mean | 0.413 | 0.678 | 2.000 | 2.917 |
CV% | 29.8 | 33.5 | 20.4 | 21.0 |
LSD.10 | NS | 0.542 | NS | NS |
Amidon | ||||
Fumigated | 0.537 | 1.263 | 2.000 | 2.500 |
Natural | 0.737 | 1.501 | 2.750 | 2.125 |
Mean | 0.637 | 1.382 | 2.375 | 2.313 |
CV% | 34.3 | 33.9 | 14.9 | 7.64 |
LSD.10 | NS | NS | 0.588 | 0.294 |
Pick City | ||||
Fumigated | 0.460 | 1.038 | 2.375 | 2.500 |
Natural | 0.489 | 1.460 | 3.000 | 2.625 |
Mean | 0.475 | 1.249 | 2.688 | 2.563 |
CV% | 20.5 | 22.4 | 16.6 | 13.2 |
LSD.10 | NS | NS | NS | NS |
1 Root disease rating, 0 to 4 for sub-crown internode. 0 = no infection, 1 = less than 25% of internode infected, 2 = 25 to 50% of internode infected, 3 = 51 to 75% of internode infected, multiple lesions, and 4 = 75 to 100% of internode infected, lesions coalesced.
2 Root color index at soft dough stage, 1 to 4. 1 = white and 4 = dark brown.
3 Root mass rating at soft dough stage, 1 to 4. 1 = few roots and 4 = substantial root system.
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