Abstract
The effect of dates of undercutting on morphological and root growth potential (RGP) traits of 2 + 0 seedlings of black walnut (Juglans nigra), white oak (Quercus alba) and red oak (Quercus rubra) was studied. The results on morphological traits showed that the response of treatments was species specific. The response on morphological traits in each species also varied with dates of undercutting. Various treatments affected the RGP traits in black walnut and red oak but in white oak except short roots, none of the RGP traits were affected by the treatments. The response of undercutting dates to RGP also varied with species. Undercutting on June 29 + July 27 gave positive response to RGP traits in black walnut while undercutting on July 27 gave positive response to RGP traits in red oak but white oak performed poorly for morphological and RGP traits on this date of undercutting.
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