Title: Screening cut-stump control of Chinese tallowtree, sweetgum and yaupon with aminocyclopyrachlor
Author: Yeiser, J. L.; Link, M.; Grogan, J.;
Source: In: Butnor, John R., ed. 2012. Proceedings of the 16th biennial southern silvicultural research conference. e-Gen. Tech. Rep. SRS-156. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 389-393.
Publication Series: Paper (invited, offered, keynote)
Description: Aminocyclopyrachlor (MAT28) was investigated for the potential control of unwanted woody rootstocks of Chinese tallowtree (Triadica sebifera), sweetgum (Liquidambar styraciflua), and yaupon (Ilex vomitoria). A cutstump application of MAT28+Brush and Basal Oil by Helena was tested against standard treatments: (1) MAT28 2.5%, (2) MAT28 5%, (3) MAT28 10%, (4) MAT28 15%, (5) Garlon 4 Ultra 30%, (6) Garlon 4 Ultra+Stalker 20+1%, (7) MAT28+Stalker 10+1% and (8) untreated check. Herbicides were applied on February 4, 2009. Stems were severed with a chainsaw and herbicide applied immediately and sufficiently to thoroughly wet the surface, edges and top 2 inches of the stump. All rootstocks were free of sprouts 30 and 60 days after treatment (DAT). The total height of Chinese tallowtree checks averaged 8.8-feet initially and 7.5-feet 540 DAT. MAT28 (10%), MAT28+Stalker and Garlon Ultra mixtures all provided 100 percent control 540 DAT. For sweetgum, total height for check rootstocks averaged 11.8-feet initially and 5.9-feet 540 DAT. Least sprouting and best control occurred on rootstocks treated with Garlon Ultra alone. Sprouts averaged 2.4-feet 540 DAT. For yaupon, total height of checks averaged 11.1-feet initially and 4.8-feet 540 DAT. No sprouts (100 percent control) were detected 540 DAT on rootstocks treated with Garlon Ultra, Garlon Ultra+Stalker, or MAT28+Stalker. Cut-stump treatments of MAT28 show potential for reducing unwanted rootstocks of Chinese tallowtree, sweetgum and yaupon.
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Yeiser, J. L.; Link, M.; Grogan, J. 2012. Screening cut-stump control of Chinese tallowtree, sweetgum and yaupon with aminocyclopyrachlor. In: Butnor, John R., ed. 2012. Proceedings of the 16th biennial southern silvicultural research conference. e-Gen. Tech. Rep. SRS-156. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 389-393.
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