August 2008 WEED IDENTIFICATION TRI-CO. YOUNG FARMERS MARCH 7, 2002 Modified by Georgia Agricultural Education Curriculum Office June 2002 Original Power Point Created by Joey Wells
August 2008 WHAT IS A WEED? A weed is a plant out of place.
August 2008 WHAT EFFECTS DO WEEDS HAVE ON US TODAY?
August 2008 WEEDS LOWER THE YIELD OF CROPS - COMPETE FOR WATER, NUTRIENTS, LIGHT, AND SPACE. –ONE WILD MUSTARD PLANT USES AS MUCH N & P AS TWO OAT PLANTS –ONE PIGWEED PLANT MAY USE AS MUCH WATER AS A CORN PLANT
August 2008 WEEDS LOWER THE QUALITY OF CROPS - WEEDS AFFECT THE QUALITY OF HAY AND GRAIN USED FOR LIVESTOCK –MILK WILL TASTE LIKE WILD GARLIC OR BITTER SNEEZEWEED IF EATEN –WEEDS CAN STAIN THE LINT OF COTTON
August 2008 WEEDS INTERFERE WITH CROP HARVEST - CAUSES DELAYS AND GREATER HARVEST LOSS. GRAIN MAY NEED DRYING IF HEAVILY INFESTED BY WEEDS
August 2008 THE LIFE CYCLE OF WEEDS
August 2008 THERE ARE FOUR TYPES OF WEEDS BASED ON THEIR LIFE CYCLE SUMMER ANNUALS WINTER ANNUALS BIENNIALS PERENNIALS
August 2008 SUMMER ANNUALS GERMINATE IN THE SPRING AND DIE IN THE FALL AFTER THE FIRST FROST SEEDS MATURE AND SCATTER MOST LIE DORMANT UNTIL SPRING EXAMPLES – MORNING GLORY, PIGWEED, COCKLEBUR, AND CRABGRASS
August 2008 WINTER ANNUALS GERMINATE IN THE FALL OR WINTER PRODUCE SEED IN THE EARLY SUMMER AND THEN DIE SEEDS LIE DORMANT DURING THE SUMMER MONTHS EXAMPLES – WILD MUSTARD, CHICKWEED, AND HENBIT
August 2008 BIENNIALS PRODUCE VEGETATIVELY FROM SEED THE FIRST SEASON BECOME DORMANT OVER THE WINTER PRODUCE FLOWERS AND SEED THE SECOND SEASON EXAMPLES – MUSK THISTLE, WILD CARROT, AND COMMON MULLEIN
August 2008 PERENNIALS LIVE FOR THREE OR MORE YEARS MOST PRODUCE SEED EACH YEAR AFTER ESTABLISHMENT DIVIDED INTO THREE CLASSES ON THE BASIS OF REPRODUCTION –SIMPLE PERENNIAL –BULBOUS PERENNIAL –CREEPING PERENNIAL
August 2008 SIMPLE PERENNIAL REPRODUCE PRIMARILY BY SEED EXAMPLE - DANDELION
August 2008 BULBOUS PERENNIAL PROPAGATE BY BULBS OR BULBLETS AS WELL AS BY SEED EXAMPLES – WILD ONION AND WILD GARLIC
August 2008 CREEPING PERENNIAL PROPAGATE BY MEANS OF RHIZOMES (UNDERGROUND STEMS), STOLONS (ABOVE GROUND STEMS), OR SPREADING ROOTS OR TUBERS, AS WELL AS BY SEED. EXAMPLES – JOHNSONGRASS > RHIZOMES AND SEED; BERMUDA GRASS > RHIZOMES, STOLONS, SEED
August 2008
CARPETWEED
August 2008 REDROOT PIGWEED
August 2008 SPINY AMARANTH
August 2008 POISON IVY
August 2008 HONEYVINE MILKWEED
August 2008 BUTTERFLY MILKWEED
August 2008 TRUMPETCREEPER
August 2008 JAPANESE HONEYSUCKLE
August 2008 CORN COCKLE
August 2008 HEARTLEAF DRYMARY
August 2008 MOUSEEAR CHICKWEED
August 2008 COMMON CHICKWEED
August 2008 COMMON LAMBSQUARTERS
August 2008 ASIATIC DAYFLOWER
August 2008 HEMP DOGBANE
August 2008 BRISTLY STARBUR
August 2008 COMMON YARROW
August 2008 COMMON RAGWEED
August 2008 GIANT RAGWEED
August 2008 MAYWEED CHAMOMILE
August 2008 WHITE HEATH ASTER
August 2008 SPANISHNEEDLES
August 2008 CORNFLOWER
August 2008 BLESSED THISTLE
August 2008 ECLIPTA
August 2008 ANNUAL FLEABANE
August 2008 HORSEWEED
August 2008 DOGFENNEL
August 2008 HAIRY GALINSOGA
August 2008 CUDWEED
August 2008 BITTER SNEEZEWEED
August 2008 CAMPHORWEED
August 2008 PRICKLY LETTUCE
August 2008 CAROLINA FALSE DANDELION
August 2008 GROUNDSEL
August 2008 GOLDENROD
August 2008 SOWTHISTLE
August 2008 DANDELION
August 2008 COMMON COCKLEBUR
August 2008 DICHONDRA
August 2008 FIELD BINDWEED
August 2008 DODDER
August 2008 BIGROOT MORNINGGLORY
August 2008 TALL MORNINGGLORY
August 2008 CYPRESSVINE MORNINGGLORY
August 2008 SMALLFLOWER MORNINGGLORY
August 2008 WILD MUSTARD
August 2008 SHEPHERDSPURSE
August 2008 SWINECRESS
August 2008 VIRGINIA PEPPERWEED
August 2008 CITRONMELON
August 2008 WILD CUCUMBER
August 2008 BURCUCUMBER
August 2008 YELLOW NUTSEDGE
August 2008 PURPLE NUTSEDGE
August 2008 VIRGINIA COPPERLEAF
August 2008 WOOLLY CROTON
August 2008 TROPIC CROTON
August 2008 SPOTTED SPURGE
August 2008 REDSTEM FILAREE
August 2008 CAROLINA GERANIUM
August 2008 BROOMSEDGE
August 2008 BROADLEAF SIGNALGRASS
August 2008 BERMUDAGRASS
August 2008 CROWFOOTGRASS
August 2008 LARGE CRABGRASS
August 2008 BARNYARDGRASS
August 2008 GOOSEGRASS
August 2008 LITTLE BARLEY
August 2008 FIELD SANDBUR
August 2008 TORPEDOGRASS
August 2008 TEXAS PANICUM
August 2008 VASEYGRASS
August 2008 ANNUAL BLUEGRASS
August 2008 FOXTAIL
August 2008 JOHNSONGRASS
August 2008 SMUTGRASS
August 2008 HENBIT
August 2008 FLORIDA BETONY
August 2008 PARTRIDGE PEA
August 2008 SICKLEPOD
August 2008 SHOWY CROTALARIA
August 2008 FLORIDA BEGGARWEED
August 2008 KUDZU
August 2008 HEMP SESBANIA
August 2008 WINTER VETCH
August 2008 WILD GARLIC
August 2008 ROUNDLEAF GREENBRIAR
August 2008 PRICKLY SIDA
August 2008 CUTLEAF EVENINGPRIMROSE
August 2008 PRICKLYPEAR
August 2008 YELLOW WOODSORREL
August 2008 MAYPOP PASSIONFLOWER
August 2008 COMMON POKEWEED
August 2008 BRACTED PLANTAIN
August 2008 BUCKHORN PLANTAIN
August 2008 BROADLEAF PLANTAIN
August 2008 KNOTWEED
August 2008 PENNSYLVANIA SMARTWEED
August 2008 RED SORREL
August 2008 REDVINE
August 2008 CURLY DOCK
August 2008 BROADLEAF DOCK
August 2008 EASTERN BRACKENFERN
August 2008 COMMON PURSLANE
August 2008 BUTTERCUP
August 2008 BLACKBERRY
August 2008 POORJOE
August 2008 FLORIDA PUSLEY
August 2008 WITCHWEED
August 2008 COMMON MULLEIN
August 2008 JIMSONWEED
August 2008 SMOOTH GROUNDCHERRY
August 2008 HORSENETTLE
August 2008 SILVERLEAF NIGHTSHADE
August 2008 BLACK NIGHTSHADE
August 2008 WILD CARROT
August 2008 PROSTRATE VERVAIN
August 2008 BLUE VERVAIN
August 2008 PEPPERVINE