Field Evaluation of Corn Root Clumps1
- D. L. Thompson2
Corn root clumps were extracted from the soil with a potato digger and rated for size on a scale from 1 (small) to 5 (large). Root clump ratings were at a maximum approximately 1 month after flowering and subsequently deteriorated .14 rating (approximately 6%) per week. Correlations between ratings and root, stalk, and total lodging were -.59*, -.58*, and -.78**, respectively. Correlations bsetween ratings and root clump weights were .92** or larger. Ratings estimates for pooled additive genetic effects were large. An evaluation advantage was indicated for the tester with a small root clump rating. This root clump method is an efficient and relatively effortless procedure for evaluating corn roots for anchorage and related factors.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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