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BAHIAGRASS
Bahiagrass
[Paspalum notatum Flugge]
DESCRIPTION
Bahiagrass is a warm-season species that spreads by
rhizomes, and is easily recognized by its characteristic "Y-shaped"
seedhead. It exhibits low overall quality because of its light color, coarse
texture, and open canopy. Due to its rapid lateral spread via aggressive
rhizome production it is primarily used in areas where erosion control and
immediate ground cover are the main concern. It is frequently planted on roadsides
and highway rights of way because it has good drought tolerance. In addition,
bahiagrass has the ability to tolerate a wide range of soils. Unfortunately, it
can be a very competitive and unsightly weed in highly maintained turf.
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Characteristic
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Description
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Seedhead / Flower
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raceme; V-shaped seedhead
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Vernation Type
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leaves rolled in the bud, may
appear to be folded
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Ligule Type
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membranous; dense white hairs
on back, 0.04 inches (1 mm) long
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Growth Season / Life Cycle
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warm season turf or perennial
weed
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Auricle Type
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absent
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Leaf Blade Tip Shape
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sharp-pointed; usually sparsely
hairy along edge toward base, smooth on both surfaces
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Leaf Blade Width
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leaf blade mostly greater than
0.2 inches wide, 0.16 - 0.31 inches (4 - 8 mm)
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Stolon Presence
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absent; due to the open canopy
and lack of thatch production, its stout, aggressive rhizomes can sometimes
be interpreted as stolons because they appear to grow at or above the soil
surface
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Rhizome Presence
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present; stout
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Collar Type
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continuous; collar and its edge
with hairs
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Sheath Margin
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open
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Sheath Type
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flattened; sheath usually not
hairy; sharply creased, rather glossy
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bahiagrass rolled
vernation
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bahiagrass rhizome
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Note: Still not sure
this is the right weed? The Turf
& Weed Identification Decision Aid may help. Check the TurfFiles glossary for definitions
of unfamiliar terms.
CULTURAL CONTROL
Bahiagrass
is well suited for roadsides because of its good drought tolerance and general
competitive ability in the southern United States. Unfortunately, it can be
very competitive and unsightly in highly maintained turf. As with other
perennial paspalums, bahiagrass can be difficult to control. Every effort
should be made to prevent these weedy grasses from becoming established in
turf, as selective control measures are usually difficult. Maintaining a
dense, healthy turf year round by proper mowing and fertilization helps prevent
encroachment and weed establishment.
CHEMICAL CONTROL
Perennial
grass weeds generally cannot be controlled with preemergence herbicides, and
postemergence options are usually limited due to turf tolerance issues. The
only proven way to selectively remove bahiagrass is with multiple applications
of arsonate herbicides (DSMA, MSMA, CMA) or metsulfuron (Manor, Blade, etc.)
beginning in early spring in tolerant turfgrass species.
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Preemergence
herbicides:
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Herbicide
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Tolerant Turfs (1)
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Average Efficacy Rating(2)
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Range of Trial Efficacy Values, %
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Number of Trials
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Products (3)
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atrazine
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be, c, sa, z
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F
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0
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AAtrex 4L*, Scotts Bonus S
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Postemergence
herbicides:
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Herbicide
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Tolerant Turfs (1)
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Average Efficacy Rating(2)
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Range of Trial Efficacy Values, %
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Number of Trials
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Products (3)
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trifloxysulfuron-sodium**
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be, z
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F
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0
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Monument
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Footnotes:
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(1)
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Turfgrass Codes:
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ba
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bahiagrass
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bc
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bentgrass,
creeping
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be
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bermudagrass
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bk
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bluegrass,
Kentucky
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c
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centipedegrass
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f
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fescue,
tall
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r
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ryegrass,
perennial
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sa
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St.
Augustinegrass
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z
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zoysiagrass
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blank
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No
turfgrass in the database is completely tolerant. Check label to see if
chemical can be used at a reduced rate or during the dormant season on your
turfgrass.
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(2)
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Efficacy Ratings:
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E
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excellent
control (90 to 100%)
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G
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good
control (80 to 90%)
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F
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fair
control (70 to 80%)
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Efficacy
ratings are based on herbicide trials performed by weed scientists at North
Carolina State University between 1997 and 2007. The number of trials
included in the efficacy ratings is displayed in the next-to-last column. The
higher this number, the more confidence can be placed in the efficacy values.
Trials may have involved sequential applications of one or more chemical.
Details of individual trials (herbicide rates, dates of application,
environmental conditions at time of application, etc) can be viewed on the
TurfFiles web site, through the Turf Weed Management
Decision Aid.
Efficacy
ratings for chemicals lacking trial data are from “Pest
Management Strategic Plan for Turfgrass in the Southern United States,”
summary of a workshop for turf experts from multiple universities held in
Griffin, GA in October, 2004 and sponsored by the Southern Region Integrated
Pest Management Center.
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(3)
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Recommendations
of specific chemicals are based upon information on the manufacturer's label
and performance in a limited number of trials. Because environmental
conditions and methods of application may vary widely, performance of the
chemical will not always conform to the safety and pest control standards
indicated by experimental data. The order in which brand names are given is
not an indication of a recommendation or criticism.
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Recommendations
for the use of agricultural chemicals are included in this publication as a
convenience to the reader. The use of brand names and any mention or listing
of commercial products or services does not imply endorsement by North
Carolina State University or discrimination against similar products or
services not mentioned. Other brand names may be labeled for use on
turfgrasses. Individuals who use agricultural chemicals are responsible for
ensuring that the intended use complies with current regulations and conforms
to the product label. Be sure to obtain current information about usage
regulations and examine a current product label before applying any chemical.
For assistance, contact your county's Cooperative Extension agent.
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© North Carolina State University. This information
sheet was prepared by Fred Yelverton, Bridget R. Lassiter, Gail G. Wilkerson,
Leon Warren, Travis Gannon, Jenifer J. Reynolds, and Gregory S. Buol.
Department of Crop Science, College of Agriculture & Life Sciences, North
Carolina State University. Prepared June 3, 2009.
Available on-line at www.turffiles.ncsu.edu. This publication was made possible
through a grant provided by the Center for Turfgrass Environmental Research
& Education (CENTERE) whose purpose is to support worthwhile projects that
will benefit both the private sector and the public, and protect the
environment.
KEYWORDS FOUND IN THIS ARTICLE:
| May 15, 2012 |
Wayne County Extention Seminar
|
L. Warren
|
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Wayne County - Warm Season Weed Management in Coastal Bermudagrass Fields
|
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| Apr 25, 2012 |
J. B. Hunt Horse Complex
|
L. Warren
|
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Spring and Summer Postemergence Weed Management in Home Lawns
|
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| Apr 12, 2012 |
Cumberland County Extension Seminar
|
L. Warren
|
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Warm Season Weed Management in Coastal Bermudagrass Fields
|
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| Jan 17, 2012 |
Virginia Turf Conference
|
F. Yelverton
|
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Weed Management
|
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| Dec 06, 2011 |
Orange County Triangle Landscape Symposium
|
L. Warren
|
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Weed Management in North Carolina Lawns
|
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| Nov 15, 2011 |
Sampson County Extension Turf Winter Weed Talk
|
L. Warren
|
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Fall and Winter Turf Weed Management
|
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| Nov 15, 2011 |
CS 152 Guest Lecture Pasture Talks
|
L. Warren
|
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Successful Pasture Weed Management - A Year-Round Commitment / Challenge
|
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| Sep 23, 2011 |
Hawaii Golf Course Superintendents Association
|
F. Yelverton
|
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HIGCSA New Products
|
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| Sep 23, 2011 |
Hawaii Golf Course Superintendents Assocaition
|
F. Yelverton
|
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HIGCSA Weed Management
|
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| Apr 28, 2011 |
NCSTMA Spring Seminar
|
L. Warren
|
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Spring and Summer Weed Management in Athletic Fields
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| Mar 22, 2011 |
Duplin County Pasture Talk
|
L. Warren
|
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Spring Herbicide Options for Bermuda / Fescue Grass Stand Success
|
|
| Feb 10, 2011 |
Guilford County Landscape Turfgrass Talks
|
L. Warren
|
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Winter and Spring Turf Weed Management
|
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| Dec 21, 2010 |
2010 NC Turfgrass Conference & Show
|
T. Gannon
|
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Advanced Turf Weed Management for LCOs
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| Nov 16, 2010 |
Weed Science Extension Training
|
L. Warren
|
|
Successful Pasture Weed Management - A Year-Round Commitment
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| May 24, 2010 |
Spain
|
F. Yelverton
|
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Weed Management For Warm-Season Golf Courses
|
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| Nov 19, 2009 |
Jones County Southeast Regional Pork Meeting
|
L. Warren
|
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Weed Control in Pastures and Spray Fields
|
|
| Nov 17, 2009 |
Harnett County Extension
|
L. Warren
|
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Horse Pasture Weed Concerns and Management Options
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| Nov 10, 2009 |
CS 414 CLASS
|
L. Warren
|
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Turfgrass Weed Management in North Carolina
|
|
| Jan 08, 2008 |
Turfgrass of NC Conference
|
T. Gannon
|
|
Managing Difficult Landscape Weeds
|
|
| Jan 07, 2008 |
NCSPA Conference
|
T. Gannon
|
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Weed Control in Sod Production - 2008
|
|
| Jan 07, 2008 |
Michigan Turf Conference
|
F. Yelverton
|
|
PRE & POST Herbicide Strategies of Lawns and Athletic Fields
|
|
| Dec 07, 2007 |
NC Vegetation Management Assoc., Raleigh, NC
|
F. Yelverton
|
|
Application Placement Technologies for Vegetation Management Along Roadsides in North Carolina - Raleigh 2007
|
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| May 28, 2007 |
Tifton Turf Conference, Tifton Georgia
|
F. Yelverton
|
|
New Herbicides and New Approaches to Weed Control
|
|
| Jan 31, 2007 |
SWSS, Nashville TN
|
T. Gannon
|
|
Application Placement Technologies for Vegetation Management Along Roadsides in North Carolina - SWSS 2007
|
|
| Jan 24, 2007 |
NC Sports Turf Association
|
F. Yelverton
|
|
New and Safer Herbicides
|
|
| Jan 24, 2007 |
Master Gardeners, Durham County
|
L. Warren
|
|
Winter and Spring Weed Control in Tall Fescue and Bermudagrass Turf
|
|
| Jan 23, 2007 |
Turfgrass of NC Conference
|
F. Yelverton
|
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Improving Weed Control
|
|
| Jan 23, 2007 |
Turfgrass of NC Conference, Weed Workshop
|
F. Yelverton
|
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New Herbicides and New Weed Problems
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| Jan 11, 2007 |
Dare County, NC
|
L. Warren
|
|
Winter and Spring Weed Control in Warm Season Turf
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| Jan 10, 2007 |
GCSAA - Chicago, Illinois
|
F. Yelverton
|
|
New Pest Control Tools and Management Trends in Turf
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| Aug 01, 2006 |
Forage Conference
|
F. Yelverton
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|
Pasture Weed Management in North Carolina
|
|
| Feb 20, 2006 |
Cumberland County TCNC Demo Days
|
L. Warren
|
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Newer Herbicides for Late Winter Early Spring Weed Control in Turf
|
|
| Feb 08, 2006 |
Davie County
|
L. Warren
|
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Making North Carolina Herbicide Recommendations Work in Davie County
|
|
| Feb 06, 2006 |
Orange County
|
L. Warren
|
|
Winter and Spring Broadleaf Weed Control in Tall Fescue Pastures
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|
| Jan 17, 2006 |
Guilford Co.
|
L. Warren
|
|
Winter Annual and Cool-Season Perennial Weed ID and Control in Tall Fescue Pastures
|
|
| Jan 12, 2006 |
Turfgrass of NC Conference, Golf Workshop
|
F. Yelverton
|
|
Weed Management in Cool-Season Lawns
|
|
| Jan 10, 2006 |
Turfgrass of NC Conference
|
M. Martin
|
|
Making North Carolina Herbicide Recommendations Work for You
|
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| Jan 09, 2006 |
County Meetings
|
F. Yelverton
|
|
Weed Management in Warm & Cool-Season Turf
|
|
| Nov 15, 2005 |
Dave Monk's Class Lecture
|
L. Warren
|
|
Weed Management Programs for North Carolina Turfgrass Growers
|
|
| Nov 03, 2005 |
Western NCSTA, Charlotte, NC
|
T. Gannon
|
|
Weed Control Calendar
|
|
| May 10, 2005 |
|
F. Yelverton
|
|
Herbicide Programs for Roadside Turf and Guardrail Management in Western NC
|
|
| Mar 15, 2005 |
|
F. Yelverton
|
|
Safe and Effective Weed Control in North Carolina Lawns
|
|
| Feb 10, 2005 |
Rockingham County Meeting
|
L. Warren
|
|
Winter Annual and Cool-Season Perennial Weed ID and Control in Pastures
|
|
| Mar 18, 2004 |
|
T. Gannon
|
|
Application Placement Technologies for Vegetation Management Along Roadsides
|
|
| Jan 07, 2004 |
|
F. Yelverton
|
|
Difficult to Control Weeds
|
|
| Dec 20, 2003 |
|
L. Warren
|
|
Turfgrass Weed Management in North Carolina - Dec. 2003
|
|
| Oct 21, 2003 |
|
L. Warren
|
|
Turfgrass Weed Management in North Carolina - Oct. 2003
|
|
| Sep 30, 2003 |
2003 Pitt County
|
T. Gannon
|
|
Fall Weed Control in Turf - 2003 Pitt County
|
|
| Jun 20, 2003 |
|
L. Warren
|
|
Postemergence Control of Summer Weeds in Bermudagrass Turf - 2003 Presentation
|
|
| Mar 10, 2003 |
|
L. Warren
|
|
Late Winter to Early Summer Turf Weed Control Options - 2003 Presentation
|
|
| Mar 04, 2003 |
|
F. Yelverton
|
|
New Herbicides for Home Lawns - 2003 Western Conference
|
|
| Jan 21, 2003 |
|
L. Warren
|
|
Basic Weed Management - 2003 TCNC
|
|
| Jan 01, 2002 |
|
L. Warren
|
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Spring to Early Summer Turf Weed Control and Feeding - 2002 Barnhill, SC
|
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| Items: 53 |  |  |  |  |   |
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