Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Sensitivity of West Indian Marsh Grass to herbicides.

Abstract

Two experiments were conducted under greenhouse conditions to identify, based on dose-response curves, the sensitivity of young and perennial plants of West Indian Marsh grass to increasing doses (0, 25, 50, 75, 100, 125, 150, 175 and 200% of the recommended dose for perennial grasses) of cyhalofop butyl (315 g c.p. ha-1), imazapic+imazapyr (24.5 g c.p. ha-1+73.5 g c.p. ha-1), glyphosate (2,160 g c.p. ha-1) and ammonium glufosinate (900 g c.p. ha-1). Experiment I was conducted from January to March 2010 and Experiment II, from January 2010 to January 2011. Young plants showed higher sensitivity to ammonium glufosinate and cyhalofop butyl; however, death occurred only when the plants were treated with glyphosate and a formulated mixture of Imazapic+Imazapyr. The herbicides did not provide satisfactory control against the perennial plants.