Impact of Season of Harvest and Site Quality on Cut-Stump Treatment of Piedmont Hardwoods

Abstract

Herbicide treatments were made to the cambial area of Piedmont hardwoods immediately after chainsaw clear-felling using Roundup® Velpar L ®, Tordon 101R®, Garlon 3A®, and Banvel CST®. Evaluations of the materials used were based on both percent kill of treated stumps and percent control of sprouting. Efficacy was determined for stumps treated during the dormant and growing season and for those growing on good versus poor sites. The interaction between herbicide and season of harvest was significant, with Tordon 101R, Velpar L, and Banvel CST all performing better on the dormant season-harvested areas. Garlon 3A and Roundup gave slightly better control of sprouting on the growing season-harvested areas. Based on percent kill, the Roundup, Garlon 3A, and Tordon 101R treatments were significantly more effective in controlling resprouting than the Velpar L and Banvel CST treatments. Two years after treatment, plots receiving the herbicide treatments had significantly less hardwood competition present. The hardwood basal area averaged 16.1 ft²/ac on untreated areas as opposed to 7.0 ft²/ac on the stump treated areas. South.J. AppL For. 11(1):46-49.

The Influence of Treatment Timing and Shrub Size on Chinese Privet (Ligustrum sinense) Control with Cut Stump Herbicide Treatments in the Southeastern United States

“…Individual L. sinense shrubs or small trees across a range of sizes from approximately 2 to 30 cm (measured by root collar diameter) served as experimental units in a completely randomized experimental design. This size range was slightly larger than reported for operational cut stump treatment of L. sinense from Arkansas (Young et al 2017) and consistent with other forests sampled in Alabama (Hart and Holmes 2013). Three treatments were applied at two seasonal timings at each of the two sites, and each treatment was replicated on 50 individual shrubs for a total of 600 experimental units.…”

“…The lack of significant interactions with evaluation date indicated that most mortality likely occurred by the time of the first evaluation at 6 MAT. This is noteworthy, because woody plant mortality following herbicide treatment often occurs one to two full growing seasons after treatment (Zedaker et al 1987). However, for L. sinense , this is more likely an indication that any sprouting following cutting or cut stump treatment will generally occur within 6 mo, regardless of spring or fall cutting.…”

“…], honey locust ( Gleditsia triacanthos L.), shoebutton ardisia ( Ardisia elliptica Thunb. ), and many others (Burch and Zedaker 2003; DiTomaso and Kyser 2007; Enloe et al 2016; Harmoney 2016; Hartman and McCarthy 2004; Meloche and Murphy 2006; Miller et al 2013; Siso and Burzycki 2004; Young et al 2017).…”

Methods of testing and their costs to control r-growth of coppiced <i>Eucalyptus camaldulensis</i> in harvested plantations in Naula, Matale District, Sri Lanka

“…Leitner (1984) noted the limited effectiveness of Roundup, even when attempting to account for possible errors in formulation or application. Stott and Parker (1995) and Ballard andNowak (2006), Troth et al (1986) and Zedaker et al (1987) found a high degree of variability of responses to Glyphosate in hardwoods, with success varying between seasons according to tree species. Given the failure rate in the current study it is worth noting that a two year study of mortalities on cut stumps treated with Glyphosate at different times of year gave broadly similar results of between 49% and 56% (growth period) and 46% and 66% mortality (dormant period) (Zedaker et.…”

ÍNDICE DE SITIO (IS) DE Calycophyllum spruceanum Benth. EN RELACIÓN CON LA ALTURA DOMINANTE DEL RODAL EN ENSAYOS DE PLANTACIÓN EN LA CUENCA DEL AGUAYTÍA, UCAYALI, PERÚ

“…(Chapman & Myers, 1949;Froese et al, 2002). Las tasas de crecimiento en altura son menores en estadios iniciales, se incrementan en árboles jóvenes y tienden a estabilizarse en individuos adultos (Zedaker et al, 1987;Armitage & Burley, 1980). Los modelos de crecimiento en altura se usan comúnmente por su buen ajuste a los modelos de crecimiento (Lencar & Marshall, 2000;Wykoff, 1990;García 1999;McNab & Ritter, 1999).…”