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Pesticide > Category 3 > Flashcards

Category 3 Flashcards

(77 cards)

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1
Q

aphids

A

small, soft bodied insects that usually cluster on stems or undersides of terminal leaves

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2
Q

aphid damage

A

appears as leaf puckering, curling or twisting; honeydew

sucking mouthparts

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3
Q

scales

A

small soft bodied and circular/oval; legless and motionless most of life; crawlers are easiest stage to control

sucking mouthparts

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4
Q

scales damage

A

plants lack vigor, appear sickly and may have sooty mold growing on honeydew

sucking mouthparts

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5
Q

mealybugs

A

small softbodied mobile throughout their life and covered with a white and powdery like material

sucking mouthparts

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6
Q

whiteflies

A

small powerdy white and flutter like tiny moths when disturbed

sucking mouthparts

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7
Q

thrips

A

tiny slender insects that feed on flowers and leaves

sucking mouthparts

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8
Q

thrip damage

A

foilage may be streaked and silvered, flowers may be deformed and ahve white streaks

sucking mouthparts

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9
Q

mites

A

not insects; very small and have 8 legs

two spotted spider mite attacks wide range of plants

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10
Q

true bugs

A

suck sap from ornamental plants

lace bugs, plant bugs

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10
Q

leafmining flies

A

larvae of some small flies feed on inner tissue of leaves

chewing mouthpart

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10
Q

tent caterpillars

A

pests of trees which reside in silk webbing

chewing mouthpart

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10
Q

sawflies

A

larvae resemble caterpillars but have more than 5 pro legs

chewing mouthpart

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10
Q

beetles

A

adults front wings are hard and leathery and meet in a straight line down center of back

larvae often do most damage

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11
Q

weevils

A

beetles with mouthparts resembling snouts, attack many shrubs and trees

chewing mouthpart

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11
Q

bark beetles

A

can introduce fatal fungus to host conifer trees during egg laying

chewing mouthpart

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11
Q

caterpillars

A

larvae of moths and butterflies; mostly foilage feeders

chewing mouthpart

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12
Q

bagworms

A

live on trees in movable shelters made of silk and plant material

chewing mouthpart

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13
Q

white grubs

A

larvae of scarab beetles; most important turfgrass pest in Tennessee; feed on roots; treatments should be made from mid July to early August

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14
Q

billbugs

A

resemble small grubs with no thoracic legs

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15
Q

wire worms

A

larvae of click beetle

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16
Q

northern mole cricket

A

shovel like front legs; tunnel beneath soil

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17
Q

Cutworms

A

moth larvae; second most important pest in Tennessee

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18
Q

sod webworms

A

cut off grass blades and consume underground; baseball sized patches die; can be detected by pouring soapy water over 4 square feet of grass in closed frame

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19
armyworms
larvae that feed in daytime; turf appears ragged; damage occurs in mid to late summer
20
chinch bugs
nymphs do most damage, feeding on tender portions of stems
21
leafhoppers
triangular shaped insects feed on leaves and stems
22
spittlebugs
nymphs live inside masses of spittle
23
leaf spots
definite spots of varying sizes; most common in early spring and fall
24
black spot
most serious disease of roses
25
apple scab
effects leavle treeses and fruit of apple trees
26
anthracnose disease
can be common on sycamore and dogwood trees
27
rust
produces spots called pustules which leave dusty rust color on fingers if touched
28
cedar apple rust
causes galls on red cedar plants and leaf spots on apples
29
powdery mildew
white or gray growth on leaves; cool nighttime temp and relative high humidity favor development
30
leaf galls
appear on many woody ornamentals; apply fungicide at bud break
31
root rot
occurs in areas of excess soil moisture
32
stem rot
caused by soil inhabiting fungi; primarily effects herbaceous ornamentals
33
black knot
common disease of ornamental fruit trees; knots should be removed and destroyed
34
vascular wilt
caused by fungi invading water conducting vessels in trees; often one side of plant is first affected as it spreads to individual limbs; severely infected trees should be removed
35
needlecasts
affect pines, causing spots or bands on needles
36
crown gall
soft swelling of the roots or stems is first sign; gall becomes rough and releases more bacteria when decomposing
37
bacterial leaf spot
irregularly shaped, shothole type symptom
38
fire blight
infection occurs in spring; dark discolered leaves; diseased branches should be pruned out
39
brown patch
up to 3 feet in diameter; smoke rings
40
dollar spot
small straw colored patches 1 to 3 inches in diameter
41
fairy ring
appear as large rings of very green grass; soil within ring may become dry or difficult to water
42
Fusarium patch
develops in cold wet weather; often develops under trees leaves or snow
43
Helminthosporium-type diseases
leaf spots appear small, purple to reddish brown; infection occurs in spring and fall but is worst during summer droughts
44
powdery mildew
white to gray powdery growth of mycelium; leaves turn yellow and slowly die
45
pythium
first appears as small spots 1 to 12 inches; diseased leaves are at first water soaked soft and slimy; cottony mycelium may appear
46
red thread
patches of grass die rapidly during cool moist weather;leaves covered with red mycelium and red "threads"
47
leaf rust
begins as small yellow flecks on leaves and stems that enlarge to pustules; found during cool wet weather in fall
48
slime mold
fungal fruiting bodies of various colors; not a true pathogen of turf grass
49
spring dead spot
first appear in 3 to 5 year old bermudagrass in the spring; spots appear in same place and expand for 3 or 4 years
50
stripe smut
smut fungus makes leaves turn gray then black and split length wise
51
white patch
appears as distinctly white patches 1 to 2 feet in diameter; small white mushrooms develop on leaf blades
52
winter annuals
sprout in the fall and flower in the spring
53
summer annuals
start from seed in spring or summer and dies in fall
54
common chickweed
juicy-tissued, shallow-rooted winter annual; egg shaped leaves
55
spurges
most are summer annuals; most have a milky acrid sap that irritates eyes mouth and skin
56
henbit
winter annual; stems are 4 to 16 inches tall and square; flowers are pink to purple
57
carolina geranium
stems are erect, hairy and pink to red; leaves are rounded, deeply divided into five to nine segments; light pink pale purple flowers
58
knotweed
found in heavy traffic areas; stems form a dense mat from a small taproot
59
dandelion
long thick fleshy taproot that contains milky juice; yellow flowers
60
dock
broadleaf and curly are two types; broadleaf arises with single stem that may reach 4 feet with reddish purple leaves; curly is similar but taller and narrower leaves
61
mousear chickweed
perennial with opposite and oblong leaves
62
plantains
buckhorn and broadleaf; both reproduce by seed and new shoots at roots; buckhorn is leafless and bear a short dense flower stock; broadleaf has egg shaped leaves
63
white clover
trifoliate leaves and stems that root at the nodes; rounded flower heads consist of 20 to 40 individual white flowers
64
wild garlic
resembles cultivated onion and reproduces by underground bulbs
65
wild violet
heart shaped leaves and purple flowers
66
crabgrass
summer annual; three to 10 finger like branches form at the top of stems, each containing small flowers
67
goosegrass
similar to crabgrass in appearance; smooth flat stems with distinctive silver or white centers
68
bluegrass
winter annual; stems are flattened and grows in tufts
69
bermudagrass
dense mats with spreading and branching stolons that root at the nodes; grows best in warm wet weather
70
dallisgrass
coarse hairy leaves; produces seed talks up to several feet in height
71
purple and yellow nutsedge
superficially resemble grass, yellow variant is more common in tennessee

Pesticide (3 decks)

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