Dioscorea oppositifolia L. Phenotypic Evaluations and Comparison of Control Strategies1

Autor:	Darren K. Robinson, Thomas C. Mueller, Dana Soehn, Joseph E. Beeler, Christopher L. Main, Kristine Johnson
Rok vydání:	2003
Předmět:	Vine biology Perennial plant Vegetative reproduction Plant Science Vegetation biology.organism_classification Dioscorea oppositifolia chemistry.chemical_compound Agronomy chemistry Glyphosate Shoot Temperate climate Agronomy and Crop Science
Zdroj:	Weed Technology. 17:705-710
ISSN:	1550-2740 0890-037X
DOI:	10.1614/wt-02-116
Popis:	Dioscorea oppositifolia (Chinese yam) is an exotic perennial vine invading natural areas in the temperate regions of the eastern United States. Rapid early-season growth of D. oppositifolia is facilitated by an extensive tuber system. Plants can reach heights greater than 370 cm, as the plants climb trees and other vegetation. Shoot length increased 3.6 cm/d from late May to mid-August under field conditions, and primary and secondary tuber length increased 0.28 and 0.2 cm/d, respectively. This indicated rapid vegetative growth and substantial food reserves to form new plants in subsequent years. Dioscorea oppositifolia plants also formed aerial bulbils of 0.8- to 1.2-cm diameter, which are important in dissemination of the species over geographical areas. A field study indicated incomplete control from manual removal, clipping by hand, or glyphosate (2% v/v) application to control D. oppositifolia, although glyphosate was the most effective. Additionally, the use of herbicides was more efficient from a t...
Databáze:	OpenAIRE
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