Weed identification the basics and significance€¦ · Weed identification – the basics and...
Transcript of Weed identification the basics and significance€¦ · Weed identification – the basics and...
![Page 1: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/1.jpg)
Weed identification – the basics and significance
Ramdas Kanissery
Assistant Professor - Weed Scientist
May 29, 2018
Southwest Florida Research and Education Center
Immokalee, FL
Horticultural
Sciences
![Page 2: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/2.jpg)
Introduction
- Significance of weed id
Weed identification - basics
- Morphology
- Life cycle
Weed id resources & tools
Plant identification services
Summary
Talk contents
![Page 3: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/3.jpg)
Introduction
- Significance of weed id
Weed identification - basics
- Morphology
- Life cycle
Weed id resources & tools
Plant identification services
Summary
Talk contents
![Page 4: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/4.jpg)
“What are weeds?”
![Page 5: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/5.jpg)
A plant growing where it is not wanted
Purslane: weed in vegetable beds
“What are weeds?”
![Page 6: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/6.jpg)
A plant growing where it is not wanted
Purslane: weed in vegetable beds Purslane: Potted plant $10 - $15
“What are weeds?”
![Page 7: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/7.jpg)
“Weeds are plants that maintain
their abundance under conditions of
repeated disturbance”- Liebman
![Page 8: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/8.jpg)
“Weeds are plants that maintain
their abundance under conditions of
repeated disturbance”- Liebman
“A weed is a plant that has mastered
every survival skill except for learning
how to grow in rows” – Doug Larson
![Page 9: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/9.jpg)
What are weeds doing in my farm or garden?
Compete for
light, nutrients,
moisture and
space
Weedy row-middle in sweet corn SWFREC Veg Farm
![Page 10: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/10.jpg)
Compete for
light, nutrients,
moisture and
space
Giant Amaranth or Pig weed Immokalee, FL
What are weeds doing in my farm or garden?
![Page 11: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/11.jpg)
Interfere with
harvesting
Giant Foxtail in snap beans Figure credit: Mark Schonbeck, Virginia
Association for Biological Farming.
What are weeds doing in my farm or garden?
![Page 12: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/12.jpg)
Figure credit: Mark Schonbeck, Virginia Association for
Biological Farming.
• Alternate host for pests and diseases
Source of pest
and diseases
What are weeds doing in my farm or garden?
![Page 13: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/13.jpg)
Figure credit: Mark Schonbeck, Virginia Association for
Biological Farming.
• Alternate host for pests and diseases
Source of pest
and diseases
Weeds growing adjacent to the crop
row providing a moist and favorable
environment for fungal growth on the
tomato foliage
What are weeds doing in my farm or garden?
![Page 14: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/14.jpg)
“Weeds can hurt your garden and they
have to go”
![Page 15: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/15.jpg)
scouting
Selection of control timing
Sanitation
Systematic weed identification
“Four S of weed management”
![Page 16: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/16.jpg)
scouting
Selection of control timing
Sanitation
Systematic weed identification
“Four S of weed management”
![Page 17: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/17.jpg)
Heavy infestation of a weed species
in a vegetable farm near Immokalee
Get the correct Id
![Page 18: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/18.jpg)
Heavy infestation of a weed species
in a vegetable farm near Immokalee
- Not responding to Glyphosate or
Paraquat
- $$ spend but no control
Get the correct Id
![Page 19: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/19.jpg)
Weed was correctly identified as
parthenium
- Specific herbicide used
Get the correct Id Parthenium
![Page 20: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/20.jpg)
Parthenium
Sweet clover Ragweed
Get the correct Id
- Similarly looking weeds
- Responds differently to herbicides
![Page 21: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/21.jpg)
•Dayflower
Dayflower growing in the drip
line under the citrus tree
- Looks like a dicot
- Actually a monocot
- So better response to grass killers
Get the correct Id
![Page 22: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/22.jpg)
scouting
Selection of control timing
Sanitation
Systematic weed identification
“Four S of weed management”
“Very important step for efficient
and sustainable weed control”
![Page 23: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/23.jpg)
Introduction
- Significance of weed id
Weed identification - basics
- Morphology
- Life cycle
Weed id resources & tools
Plant identification services
Summary
Talk contents
![Page 24: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/24.jpg)
Weed ID basics
Morphology
Structure and form
Life cycle
How it develops and reproduce
![Page 25: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/25.jpg)
Weed ID basics
Morphology
Structure and form
Life cycle
How it develops and reproduce
![Page 26: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/26.jpg)
Weed ID basics
Morphology
Identifying characteristics
Leaf - shape, arrangement, venation etc.
![Page 27: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/27.jpg)
Weed ID basics
Morphology
Identifying characteristics
Leaf - arrangement
www.horton.ednet.ns.ca/staff/Richards
Alternate Opposite Whorled
![Page 28: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/28.jpg)
Weed ID basics
Morphology
Identifying characteristics
Leaf - shapes
https://www.teacherspayteachers.com
Orbicular Elliptical Obovate Ovate Reniform
![Page 29: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/29.jpg)
Weed ID basics
Morphology
Identifying characteristics
Stem - presence or absence of hairs
![Page 30: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/30.jpg)
Weed ID basics
Morphology
Identifying characteristics
Stem - presence of hairs
Florida Pusley – Richardia scabra
![Page 31: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/31.jpg)
Weed ID basics
Morphology
Identifying characteristics
Roots – annuals vs perennials
![Page 32: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/32.jpg)
Weed ID basics
Morphology
Identifying characteristics
Flower heads/seed heads - Shape, color etc.
![Page 33: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/33.jpg)
Purple Yellow
Yellow v/s Purple
Nutsedge
Flower/Seed head
Morphology
![Page 34: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/34.jpg)
Seed head
Bahia grass
‘V’ shaped seed head
Morphology
![Page 35: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/35.jpg)
Seed head
Bermuda
grass
Seed head cluster of 3-5
Morphology
![Page 36: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/36.jpg)
Seed head
Crow foot
grass
‘Seed head looks like a crow's foot
Morphology
![Page 37: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/37.jpg)
Purple Yellow
Yellow v/s Purple
Nutsedge
Leaf tip
Morphology
![Page 38: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/38.jpg)
Purple Yellow
Yellow v/s Purple
Nutsedge
Leaf tip
Morphology
![Page 39: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/39.jpg)
Pennywort or Dollar weed:
- stem attaches to the leaf in the
center of the leaf
Morphology
Stem attachment to leaf
![Page 40: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/40.jpg)
Pennywort or Dollar weed:
- stem attaches to the leaf in the
center of the leaf
Dichondra:
- stem attaches at the edge of a
kidney-shaped leaf
Morphology
Stem attachment to leaf
![Page 41: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/41.jpg)
Pennywort or Dollar weed:
- stem attaches to the leaf in the
center of the leaf
Dichondra:
- stem attaches at the edge of a
kidney-shaped leaf
Creeping Charlie:
- stem attaches at the edge of leaf
- leaves have ragged edge
Morphology
Stem attachment to leaf
![Page 42: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/42.jpg)
Yellow nutsedge
Sheath Color
Morphology
Yellow foxtail:
- Reddish leaf sheath
Nutsedge
- green leaf sheath
![Page 43: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/43.jpg)
- A cotyledon is the part of the seed that will grow into the leaves.
Dicots get their names from
having two cotyledons instead of
one.
http://jmgkids.us
Morphology
Monocots vs Dicots
Monocots has one cotyledon
![Page 44: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/44.jpg)
Dicots get their names from
having two cotyledons instead of
one.
Monocots has one cotyledon
- A cotyledon is the part of the seed that will grow into the leaves.
Monocots vs Dicots
![Page 45: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/45.jpg)
Monocot leafs have parallel or up and
down veins
Dicot leafs have veins that
are scatter or “netted.”
- They do not follow a pattern.
http://jmgkids.us
Monocots vs Dicots
![Page 46: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/46.jpg)
•Dayflower
- Actually a monocot
- So better response to grass killers
Monocot leafs have parallel or up
and down veins
![Page 47: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/47.jpg)
Monocot can be identified by their flowers
parts. The flower parts on a monocot plant
come in multiples of 3
Dicot flower parts come in
multiples of 4 or 5
http://jmgkids.us
Monocots vs Dicots
![Page 48: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/48.jpg)
Monocot
Grasses, sedges
Dicot
Broad-leaf
http://jmgkids.us
Monocots vs Dicots
![Page 49: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/49.jpg)
Monocot
“Grasses vs sedges”
http://jmgkids.us
Monocots
![Page 50: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/50.jpg)
http://ohioplants.org/families-cyperaceae/
Sedges Grasses
![Page 51: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/51.jpg)
Weed ID basics
Morphology
Structure and form
Life cycle
How it develops and reproduce
![Page 52: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/52.jpg)
Annuals
Life-cycle of weeds
Complete their life cycle
from seed to seed in
less than one year
![Page 53: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/53.jpg)
Annuals
Amaranth
Pusley
Crab grass
Life-cycle of weeds
![Page 54: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/54.jpg)
Winter Autmn Spring Sumer Fall
Winter
Annuals
Summer
Annuals
v/s
Life-cycle of weeds
![Page 55: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/55.jpg)
Winter Annuals
Winter Autmn Spring Sumer
Fall moisture
Germination Rosette growth
Bolting
Flowering
Fall
Winter
Annuals
Summer
Annuals
v/s
Life-cycle of weeds
![Page 56: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/56.jpg)
Summer Annuals
Winter Annuals
Winter Autmn Spring Sumer
Fall moisture
Germination Rosette growth
Bolting
Flowering
Fall
Winter
Annuals
Summer
Annuals
v/s
Life-cycle of weeds
![Page 57: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/57.jpg)
Winter Autmn Spring Sumer Fall
Winter
Annuals
Summer
Annuals
v/s
Crab grass
Chickweed Pennycress
Life-cycle of weeds
![Page 58: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/58.jpg)
Biennial
Life-cycle of weeds
- Emerge from seed & grow
during the first year
- Produce flowers and produce
seeds in the second year
![Page 59: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/59.jpg)
Biennial
Cut leaf evening primrose
– Rosette stage (First year)
Life-cycle of weeds
![Page 60: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/60.jpg)
Biennial
Cut leaf evening primrose
– Flowering stage (Second year)
Life-cycle of weeds
Rosette stage
![Page 61: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/61.jpg)
Perennials
Life cycle of weeds
- Perennial weeds can grow and
produce flowers for multiple years
- Produce vegetative structures that
generate new plants
![Page 62: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/62.jpg)
Perennials
Nut sedge
Creeping
beggar weed
• Produce vegetative
structures
• Eg., stolons,
rhizomes, tubers, or
large roots
Life cycle of weeds
![Page 63: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/63.jpg)
Perennials
Rhizome
- underground
Stolon
- above ground
Stolon
Life cycle of weeds
http://ipm.ucanr.edu
![Page 64: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/64.jpg)
Weed ID basics
Morphology
Identifying characteristics
Roots – annuals vs perennials
![Page 65: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/65.jpg)
Perennials
Rhizome, Stolon
Life cycle of weeds
http://ipm.ucanr.edu
Annuals
Fibrous roots
vs
![Page 66: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/66.jpg)
Introduction
- Significance of weed id
Weed identification - basics
- Morphology
- Life cycle
Weed id resources
Plant identification services
Summary
Talk contents
![Page 67: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/67.jpg)
Weed Identification Tools
Stumped in the Field?
![Page 68: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/68.jpg)
Web Help PLANTS National Database (USDA)
- Good information, some pictures
- Searchable format
- http://plants.usda.gov/
Weed Identification Tools
![Page 69: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/69.jpg)
Atlas of Florida Vascular Plants
- University of South Florida
- Taxonomic information, distribution maps
- http://www.plantatlas.usf.edu/
Weed Identification Tools
![Page 70: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/70.jpg)
Invasive Plants of the U.S.
- Identification and control
- http://www.invasive.org/
Plant Identification Tools
![Page 71: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/71.jpg)
Aquatic and Invasive Plants - UF
- Excellent pictures and information
University of Florida - Plant Identification Resources
![Page 72: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/72.jpg)
Range Cattle REC - UF
- Excellent pictures and information
University of Florida - Plant Identification Resources
![Page 73: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/73.jpg)
“Weed garden at
SWFREC
Immokalee”
University of Florida - Weed Identification Education
About 30 species of
weeds now
Programs planned
- Weed id training
- Youth programs etc.
![Page 74: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/74.jpg)
Stumped in the Field?
Get the plant sample
Store in plastic bag with damp paper
towel
8-10 hours maximum!
Change paper often while drying
Don’t store it in your hot car
![Page 75: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/75.jpg)
Stumped in the Field?
Get the plant sample
Store in plastic bag with damp paper
towel
8-10 hours maximum
Change paper often while drying
Don’t store it in your hot car
Pictures or Digital Images
- Overall view (growth habit)
- Specific characteristics
![Page 76: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/76.jpg)
Stumped in the Field?
Plant diagnostic clinics
- County Extension
- SWFREC
UF herbarium service
![Page 77: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/77.jpg)
Stumped in the Field?
Plant diagnostic clinics
- County Extension
- SWFREC
UF herbarium service
![Page 78: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/78.jpg)
UF Herbarium Service
Florida Museum of Natural History
379 Dickinson Hall
P.O. Box 110575
Gainesville, FL 32611-0575
(352) 273-1990
E-Mail: [email protected]
University of Florida - Plant Identification Resources
![Page 79: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/79.jpg)
Introduction
- Significance of weed id
Weed identification - basics
- Morphology
- Life cycle
Weed id resources
Plant identification services
Summary
Talk contents
![Page 80: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/80.jpg)
Systematic weed identification
• Important step in efficient weed
management
Weed identification
- Summary
![Page 81: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/81.jpg)
Systematic weed identification
• Important step in efficient weed
management
Weed identification
- Summary
Weed ID basics
• Morphology
• Life cycle
![Page 82: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/82.jpg)
Systematic weed identification
• Important step in efficient weed
management
Weed identification
- Summary
Weed ID basics
• Morphology
- Leaves, flower heads, roots
- Monocot vs Dicot
- Grass vs sedge
![Page 83: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/83.jpg)
Systematic weed identification
• Important step in efficient weed
management
Weed identification
- Summary
Weed ID basics
• Morphology
- Leaves, flower heads, roots
- Monocot vs Dicot
- Grass vs sedge
• Life cycle
- Annuals
- Biennials
- Perennials – stolon, rhizomes
![Page 84: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/84.jpg)
Systematic weed identification
• Important step in efficient weed
management
Weed identification
- Summary
Weed ID basics
• Morphology
- Leaves, flower heads, roots
- Monocot vs Dicot
- Grass vs sedge
• Life cycle
- Annual
- Biennial
- Perennial – roots
Weed ID resources
• Web, UF resources, diagnostic clinic,
• Herbarium service
• SWFREC weed garden
![Page 85: Weed identification the basics and significance€¦ · Weed identification – the basics and significance Ramdas Kanissery Assistant Professor - Weed Scientist May 29, 2018 Southwest](https://reader030.fdocuments.in/reader030/viewer/2022041006/5eace69bdca378187c499efa/html5/thumbnails/85.jpg)
SWFREC weed science team
Thank you…
Contact
Ramdas Kanissery
UF/IFAS SWFREC
2685 State Road N
Immokalee, FL
Phone: (239) 658-3455