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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 23, Number 2 (1972) → Root Fibrosity Proves Insignificant in Survival, Growth of Black Walnut Seedlings

Root Fibrosity Proves Insignificant in Survival, Growth of Black Walnut Seedlings

In test plantings with black walnut in Illinois and Indiana, fibrous rooted seedlings did not survive better or grow faster than single taprooted seedlings. Stem diameter appears a better indicator of early height growth than root fibrosity.Black walnut seedlings normally develop a single, carrotshaped taproot, but root fibrosity can be greatly enhanced by modifying soil texture and by certain cultural practices. 1 Foresters have speculated that a more fibrous rooted seedling would survive better and grow faster than the normal taprooted seedling. But field plantings in Illinois and Indiana have not shown the expected advantages to survival and growth of fibrous multiple rooted seedlings. Rather, stem diameter of the seedlings appears to be a better indicator of early height growth than does fibrous root development.


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Author(s): Robert D. Williams

Publication: Tree Planters' Notes - Volume 23, Number 2 (1972)

Volume: 23

Number: 2