Hemp Dogbane Growth and Control

Robison, L. R.; Jeffery, L. S.

doi:10.1017/s0043174500035244

Cited by 14 publications

(13 citation statements)

References 4 publications

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“…Lateral roots spread from just below the crown of hemp dogbane and buds on lateral roots develop into new plants the following spring to form dense, circular patches that can reduce crop yields (Schultz and Burnside 1979a;Triplett 1985). Crown buds are the primary source of vegetative regrowth following disturbance of the shoots, and like lateral roots, crown buds can overwinter (Becker and Fawcett 1998;Robison and Jeffery 1972). To adequately control hemp dogbane, the vegetative buds in the crown and lateral roots must be destroyed or new shoots will develop.…”

Section: Introductionmentioning

confidence: 99%

Translocation of Nicosulfuron and Dicamba in Hemp Dogbane (Apocynum cannabinum)¹

Kálnay¹,

Glenn²

2000

Weed Technology

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Absorption and translocation of nicosulfuron and dicamba applied alone and combined was studied in 25-cm-high hemp dogbane originating from lateral roots that had overwintered. Absorption of 14C-nicosulfuron by hemp dogbane was not affected by applications of 70 g ai/ha unlabeled dicamba. Upward translocation of 14C-nicosulfuron in hemp dogbane was 86% greater 6 d after treatment (DAT) when dicamba was tank mixed with nicosulfuron, compared to nicosulfuron applied alone. Combinations of nicosulfuron plus dicamba increased translocation of nicosulfuron to hemp dogbane crown and roots 237 and 130%, 1 and 6 DAT, respectively, compared to nicosulfuron applied alone. Absorption of 14C-dicamba by hemp dogbane was not affected by the addition of 31 g ai/ha nicosulfuron. Upward translocation of dicamba in hemp dogbane was 42% greater 6 DAT for nicosulfuron plus dicamba compared to dicamba applied alone. Increased hemp dogbane control with nicosulfuron plus dicamba compared to either herbicide applied alone can be explained by enhanced translocation of both herbicides.

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Section: Introductionmentioning

confidence: 99%

Translocation of Nicosulfuron and Dicamba in Hemp Dogbane (Apocynum cannabinum)¹

Kálnay¹,

Glenn²

2000

Weed Technology

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“…The species can be found throughout much of the United States and southern Canada (5, 6). Hemp dogbane reproduces from seed, basal crown buds, and budding roots (6,24,26). Roots are usually found 15 cm below the soil surface or deeper and grow in a lateral direction away from the parent plant.…”

Section: Introductionmentioning

confidence: 99%

Differential Response of Hemp Dogbane (Apocynum cannabinum) to Clopyralid, Dowco 433, and 2,4-D

Orfanedes

Wax

1991

Weed technol.

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Field studies were conducted to compare the short- and long-term control of hemp dogbane by POST applications of Dowco 433, clopyralid, and 2,4-D amine. Dowco 433 at 140 g ae ha–1controlled 81 to 93% of weeds at 8 wk after treatment. Good control (79 to 89%) was also achieved with 560 g ae ha–12,4-D amine at 8 wk after treatment. Twelve months after treatment, control of hemp dogbane averaged 65 to 75% where Dowco 433 was applied at rates of 140 g ha–1or higher. Similar results were obtained with 2,4-D amine at 560 g ha–1. Control with clopyralid was minimal. Weed height and dry weight were reduced with all treatments except clopyralid. The effect of early versus late application was also evaluated in two studies. In certain situations, control 8 wk after treatment was greater when application was made during the early reproductive growth stage as opposed to the vegetative growth stage.

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“…Herbicide applications in September provide better control than those applied in June wfiile treatments applied 16 June, 21 September, and 4 October resulted in 0 to 61%. 85%, and 52% control of hemp dogbane, respectively (13,14,21).…”

mentioning

confidence: 99%

Control of Hemp Dogbane with Foliar and Soil Applied Herbicides

Schultz¹,

Burnside

1979

Agronomy Journal

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Hemp dogbane (Apocynum cannabinum L.) has become a serious weed problem in eastern and southcentral Nebraska. Greenhouse and field studies were conducted to evaluate control of hemp dogbane with herbicides. In greenhouse studies, postemergence applications of herbicide combinations which included 2,4‐D [(2,4‐dichlorophenoxy)acetic acid] ester, 2,4‐D amine, or glyphosate [N‐phosphonomethyl)glycine] controlled hemp dogbane more effectively than those containing dicamba (3,6‐dichloro‐o‐anisic acid) or amitrole (3‐amino‐s‐triazole). Control was greater with equivalent rates of 2,4‐D ester than with 2,4‐D amine. Control with 2,4‐D increased with longer slide‐chain lengths of both ester and amine formulations. Postemergence control of hemp dogbane with herbicides was erratic in field studies over years. Glyphosate generally provided better control than 2,4‐D, and amitrole consistently gave poor control. A preliminary study showed that growth of hemp dogbane from crown and lateral roots could be suppressed or controlled with preplant treatments of thiocarbamate herbicides. Increasing order of effectiveness for controlling hemp dogbane was vernolate (S‐propyl dipropylthiocarbamate), EPTC (S‐ethyl dipropylthiocarbamate), and butylate (S‐ethyl diisobutylthiocarbamate). In the field, butylate + R‐25788 (N,N‐diallyl‐2,2‐dichloroacetamide) and EPTC + R‐25788 at 4.5 + 0.2 kg/ha provided good control (60 to 98%) of hemp dogbane during the first 2 months after corn (Zea mays L.) planting, but decreased to 0 to 40% at harvest. Higher rates of butylate + R‐25788 controlled hemp dogbane slightly longer. Thiocarbamate herbicides inhibited deposition of epicuticular wax on the leaves of hemp dogbane in 1977 but not in 1978. It appears that preplant applications of the thiocarbamate herbicides may aid in controlling hemp dogbane via delayed emergence, reduced plant vigor, and possibly greater adsorption of 2,4‐D applied subsequently as a foliar application.

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Hemp Dogbane Growth and Control

Cited by 14 publications

References 4 publications

Translocation of Nicosulfuron and Dicamba in Hemp Dogbane (Apocynum cannabinum)¹

Translocation of Nicosulfuron and Dicamba in Hemp Dogbane (Apocynum cannabinum)¹

Differential Response of Hemp Dogbane (Apocynum cannabinum) to Clopyralid, Dowco 433, and 2,4-D

Control of Hemp Dogbane with Foliar and Soil Applied Herbicides

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Hemp Dogbane Growth and Control

Cited by 14 publications

References 4 publications

Translocation of Nicosulfuron and Dicamba in Hemp Dogbane (Apocynum cannabinum)1

Translocation of Nicosulfuron and Dicamba in Hemp Dogbane (Apocynum cannabinum)1

Differential Response of Hemp Dogbane (Apocynum cannabinum) to Clopyralid, Dowco 433, and 2,4-D

Control of Hemp Dogbane with Foliar and Soil Applied Herbicides

Contact Info

Product

Resources

About

Translocation of Nicosulfuron and Dicamba in Hemp Dogbane (Apocynum cannabinum)¹

Translocation of Nicosulfuron and Dicamba in Hemp Dogbane (Apocynum cannabinum)¹