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    Author(s): W.D. "Dusty" Walter; H.E. "Gene" Garrett; Larry D. Godsey
    Date: 2004
    Source: In: Michler, C.H.; Pijut, P.M.; Van Sambeek, J.W.; Coggeshall, M.V.; Seifert, J.; Woeste, K.; Overton, R.; Ponder, F., Jr., eds. Proceedings of the 6th Walnut Council Research Symposium; Gen. Tech. Rep. NC-243. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 106-109
    Publication Series: General Technical Report (GTR)
    Station: North Central Research Station
    PDF: View PDF  (145.23 KB)

    Description

    When establishing an agroforestry practice, the number of trees planted will often exceed the densities needed to achieve a final spacing or configuration. While tight spacings may facilitate certain growth parameters, such as height development, timely thinnings of plantings are required in order to maintain desirable growth rates. In managed plantations especially, the stump sprouts that often result from thinnings may be deemed undesirable for aesthetic reasons, and inhibit other management activities, such as harvesting nuts and mowing. By applying select herbicides to the stump surface following thinning operations, sprouting that often develops can be eliminated. This study was established during the thinning of an eastern black walnut (Juglans nigra L.) plantation, with stumps treated immediately following tree felling. Four treatments, including 3 herbicides (Garlon 3A®, Banvel® and Roundup®) and a control (no stump treatment), were applied in a randomized complete block design to 36 stumps. Treatments were applied during April of 2001, with damage to adjacent crop trees assessed later that same growing season. For 2 years following stump treatment, sprouts were counted. Garlon 3A® provided the best results with no sprouting observed over the 2 year study period.

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    Citation

    Walter, W.D. Dusty; Garrett, H.E. Gene; Godsey, Larry D. 2004. Use of herbicide to reduce stump-sprouting following thinning of an eastern black walnut agroforestry planting. In: Michler, C.H.; Pijut, P.M.; Van Sambeek, J.W.; Coggeshall, M.V.; Seifert, J.; Woeste, K.; Overton, R.; Ponder, F., Jr., eds. Proceedings of the 6th Walnut Council Research Symposium; Gen. Tech. Rep. NC-243. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 106-109

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