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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
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August 2008 WHAT IS A WEED? A weed is a plant out of place.
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August 2008 WHAT EFFECTS DO WEEDS HAVE ON US TODAY?
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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
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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
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August 2008 WEEDS INTERFERE WITH CROP HARVEST - CAUSES DELAYS AND GREATER HARVEST LOSS. GRAIN MAY NEED DRYING IF HEAVILY INFESTED BY WEEDS
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August 2008 THE LIFE CYCLE OF WEEDS
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August 2008 THERE ARE FOUR TYPES OF WEEDS BASED ON THEIR LIFE CYCLE SUMMER ANNUALS WINTER ANNUALS BIENNIALS PERENNIALS
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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
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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
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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
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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
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August 2008 SIMPLE PERENNIAL REPRODUCE PRIMARILY BY SEED EXAMPLE - DANDELION
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August 2008 BULBOUS PERENNIAL PROPAGATE BY BULBS OR BULBLETS AS WELL AS BY SEED EXAMPLES – WILD ONION AND WILD GARLIC
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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
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August 2008
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CARPETWEED
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August 2008 REDROOT PIGWEED
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August 2008 SPINY AMARANTH
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August 2008 POISON IVY
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August 2008 HONEYVINE MILKWEED
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August 2008 BUTTERFLY MILKWEED
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August 2008 TRUMPETCREEPER
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August 2008 JAPANESE HONEYSUCKLE
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August 2008 CORN COCKLE
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August 2008 HEARTLEAF DRYMARY
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August 2008 MOUSEEAR CHICKWEED
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August 2008 COMMON CHICKWEED
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August 2008 COMMON LAMBSQUARTERS
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August 2008 ASIATIC DAYFLOWER
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August 2008 HEMP DOGBANE
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August 2008 BRISTLY STARBUR
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August 2008 COMMON YARROW
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August 2008 COMMON RAGWEED
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August 2008 GIANT RAGWEED
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August 2008 MAYWEED CHAMOMILE
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August 2008 WHITE HEATH ASTER
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August 2008 SPANISHNEEDLES
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August 2008 CORNFLOWER
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August 2008 BLESSED THISTLE
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August 2008 ECLIPTA
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August 2008 ANNUAL FLEABANE
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August 2008 HORSEWEED
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August 2008 DOGFENNEL
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August 2008 HAIRY GALINSOGA
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August 2008 CUDWEED
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August 2008 BITTER SNEEZEWEED
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August 2008 CAMPHORWEED
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August 2008 PRICKLY LETTUCE
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August 2008 CAROLINA FALSE DANDELION
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August 2008 GROUNDSEL
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August 2008 GOLDENROD
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August 2008 SOWTHISTLE
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August 2008 DANDELION
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August 2008 COMMON COCKLEBUR
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August 2008 DICHONDRA
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August 2008 FIELD BINDWEED
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August 2008 DODDER
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August 2008 BIGROOT MORNINGGLORY
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August 2008 TALL MORNINGGLORY
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August 2008 CYPRESSVINE MORNINGGLORY
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August 2008 SMALLFLOWER MORNINGGLORY
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August 2008 WILD MUSTARD
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August 2008 SHEPHERDSPURSE
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August 2008 SWINECRESS
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August 2008 VIRGINIA PEPPERWEED
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August 2008 CITRONMELON
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August 2008 WILD CUCUMBER
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August 2008 BURCUCUMBER
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August 2008 YELLOW NUTSEDGE
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August 2008 PURPLE NUTSEDGE
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August 2008 VIRGINIA COPPERLEAF
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August 2008 WOOLLY CROTON
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August 2008 TROPIC CROTON
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August 2008 SPOTTED SPURGE
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August 2008 REDSTEM FILAREE
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August 2008 CAROLINA GERANIUM
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August 2008 BROOMSEDGE
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August 2008 BROADLEAF SIGNALGRASS
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August 2008 BERMUDAGRASS
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August 2008 CROWFOOTGRASS
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August 2008 LARGE CRABGRASS
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August 2008 BARNYARDGRASS
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August 2008 GOOSEGRASS
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August 2008 LITTLE BARLEY
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August 2008 FIELD SANDBUR
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August 2008 TORPEDOGRASS
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August 2008 TEXAS PANICUM
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August 2008 VASEYGRASS
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August 2008 ANNUAL BLUEGRASS
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August 2008 FOXTAIL
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August 2008 JOHNSONGRASS
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August 2008 SMUTGRASS
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August 2008 HENBIT
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August 2008 FLORIDA BETONY
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August 2008 PARTRIDGE PEA
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August 2008 SICKLEPOD
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August 2008 SHOWY CROTALARIA
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August 2008 FLORIDA BEGGARWEED
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August 2008 KUDZU
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August 2008 HEMP SESBANIA
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August 2008 WINTER VETCH
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August 2008 WILD GARLIC
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August 2008 ROUNDLEAF GREENBRIAR
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August 2008 PRICKLY SIDA
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August 2008 CUTLEAF EVENINGPRIMROSE
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August 2008 PRICKLYPEAR
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August 2008 YELLOW WOODSORREL
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August 2008 MAYPOP PASSIONFLOWER
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August 2008 COMMON POKEWEED
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August 2008 BRACTED PLANTAIN
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August 2008 BUCKHORN PLANTAIN
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August 2008 BROADLEAF PLANTAIN
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August 2008 KNOTWEED
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August 2008 PENNSYLVANIA SMARTWEED
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August 2008 RED SORREL
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August 2008 REDVINE
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August 2008 CURLY DOCK
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August 2008 BROADLEAF DOCK
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August 2008 EASTERN BRACKENFERN
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August 2008 COMMON PURSLANE
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August 2008 BUTTERCUP
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August 2008 BLACKBERRY
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August 2008 POORJOE
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August 2008 FLORIDA PUSLEY
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August 2008 WITCHWEED
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August 2008 COMMON MULLEIN
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August 2008 JIMSONWEED
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August 2008 SMOOTH GROUNDCHERRY
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August 2008 HORSENETTLE
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August 2008 SILVERLEAF NIGHTSHADE
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August 2008 BLACK NIGHTSHADE
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August 2008 WILD CARROT
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August 2008 PROSTRATE VERVAIN
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August 2008 BLUE VERVAIN
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August 2008 PEPPERVINE
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