Biological Control of Yellow Nutsedge with the Indigenous Rust Fungus Puccinia canaliculata

Abstract

Yellow nutsedge (Cyperus esculentus L.) is a serious weed problem in the United States and other countries. An indigenous rust fungus [Puccinia canaliculata (Schw.) Lagerh.], pathogenic on yellow nutsedge, was released in early spring as a potential biological control agent. The fungus inhibited nutsedge flowering and new tuber formation. The fungus also dehydrated and killed nutsedge plants. The successful control of yellow nutsedge by a rust epiphytotic under experimental conditions demonstrates the potential use of the rust in an integrated weed management system.

Cover Crop Management in a Chardonnay/99 Richter Vineyard in the Coastal Wine Grape Region, South Africa. 1. Effect of Two Management Practices on Selected Grass and Broadleaf Species

“…Certain weed species can be controlled with biological agents (Cullen et al, 1973;Daniel et al, 1973;Phatak et al, 1983;Woodhead, 1981). The vacated niche will, however, be filled by other species not susceptible to the agent (Putnam, 1990).…”

Innovative Applications of Microbial Agents for Biological Weed Control

“…PFC-ALDERKIL red alder Dorworth, 1995 Phomopsis amaranticolor pigweed Rosskopf, 1997 P. convovulus field bindweed Morinetal.,1989Morinetal., , 1990 Puccinia canaliculata DR. BIOSEDGE yellow nutsedge Phatak et al, 1983; Beste et al, 1992 2.1.…”

BUSCANDO UM BIOHERBICIDA CONTRA Cyperus sp (tiririca)

“…O potencial de alguns fungos herbipatógenos tem sido avaliado, baseado em observações de campo (CASTELLANI 1942, PHATAK et al 1983, FREEMAN & CHARUDATTAN 1984, BARRETO & EVANS 1995, WETZSTEIN & PHATAK 1987, STOVALL & CLAY 1988, UPADHAYAY & STROBEL et al 1990, CHARUDATTAN 1991UPADHAYAY et al 1991, TEBEEST et al 1992, BORGES NETO 1997e RIBEIRO et al 1997. BARRETO & EVANS (1995) afirmaram terem sido os primeiros a registrar Cercospora caricis Ouden em plantas de tiririca (Cyperus rotundus), no Brasil.…”