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crop diagnostics > test hot wooman > Flashcards

test hot wooman Flashcards

1
Q

what does pest feeding couSE 2

A

wounds or holes

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2
Q

what are two mounth peices on animals

A

chewing
piercing-sucking

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3
Q

what are the 6 parts of intigrated pest managment

A

culture control
chemical control
physical control
biological control
behaviour control
host plant resistence

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4
Q

what are three omafra resosurses

A

agronomy guide
field crop news
crop protection hub

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5
Q

what is the definitoin of an economicla threashhold

A

pest density at which a decision must be made to prevent an increasing pest population from reaching an economic injury level

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6
Q

what bug causes the following symptoms in early season cereals
stunting
chlorosis
purpling
there are 2

A

cereal aphinds
barley yellow dwarph virus

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7
Q

early season corn ceral corn soy
stand loss
patchy
stunting
there are 2

A

seedcorn magot

white grubs

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8
Q

what conditoins favor seedcorn maggot 2

A

cool wet springs
decaying organic matter

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9
Q

early season corn cereals soybean
stunting or plant death
skips in row
purple or bluew leaf tips

A

wire worms

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10
Q

what two crops are wire worms serious on

A

corn
spring planted cereals

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11
Q

when is the best time to bait wire worm

A

spring or late fall but spring is better

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12
Q

what are four wireworm bait traps

A

moist corn or
wheat
cut up potatos
flour

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13
Q

what are three common white grubs

A

june beetle
earopean chafer
japanese

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14
Q

which is the bigest of the white grubs

A

june beetles

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15
Q

which bug has lines in a zipper formatoin

A

european chaffer

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16
Q

which bug has two straight lines

A

june bug

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17
Q

which of the grubs has a three year life cycle

A

june bug

18
Q

what time of year do teh european chafer and japanese beetle lay there eggs and come out

A

june jully

19
Q

what is a early season corn pests

A

black cutworm

20
Q

what are three problamatic sypmtoms of cutworm

A

cut plant
missing plants
wilting plants

21
Q

4 larva id for black cutworm

A

grey black
pale underside
hide in soil during day
up to 3.5cm long

22
Q

what is one thing that will increase your risk for black cutworm

A

grean coverage in spring before tillage

23
Q

what are three problamatic symptoms of a cereal leaf beetle

A

defoliatoin leafs look silver windowpaining

24
Q

if you walk out of your wheat field and have brown streaks what kind of insect is it

A

cearial leaf beetle

25
Q

what are two problamatic symptoms for army worm

A

defoliatoin
ragged leafs

26
Q

dull green to brown larva
white bordered stripes along body
dorange brown head
which insect is this

A

true armyworm

27
Q

MID SEASONsoybean symptoms
defoliatoin circles

A

bean leaf beetle

28
Q

what does a bean leaf beetle look like

A

black triangle bebtween the head
variable coulor and spots

29
Q

what effect does pod feeding have in soybeans 2

A

increased suseptibility to diseases
transmit bean pod mottle virus

30
Q

when do new bean leaf beetles apear in the year

A

june jully

31
Q

what insect will couse the following in mid season soybeans
defoliation skeliting

A

japanese beetle

32
Q

what are soybean threashholds for defoliation

A

30 in veg stage
20 in r stage

33
Q

explain how to take a soybean leaf defoliation sample

A

take top bottom middle leaves
throw away the worse and the best one and do a sample on the three middle ones

perform on tenish plants

34
Q

mid-late season soybeans
silvery grey
drought stress
patches close to field edge

A

spidermites two spoted

35
Q

what do spidermites come out and where do they effect the plant

A

first week of jully
bottam leaves

36
Q

how often should one check for spidermites in dry conditoins

A

4-5 days

37
Q

what is the threathold of a spidermite

A

4 or more per leavlet

38
Q

mid-late season soybeans
early ants
sooty mold sticky plants

A

soybean aphids

39
Q

what plant do soybean aphids love

A

european buckthorn

40
Q

what soybean insect has alot of natural preditors

A

soybean aphid

41
Q

what percentage of seed coating is actually tooken up by the plant

A

2-3%

crop diagnostics (5 decks)

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