Test 2

Question 1

What are three formulatoins of phenoxy herbicides

Answer 1

Salt
Amine
Ester

Question 2

What formulation of salt is the least efficacious and provides poorest weed control

Answer 2

Salts

Question 3

Generally what formulation provides the best weed control. Salt amine ester

Answer 3

Ester

Question 4

Generally what formulation salt Easter amine has the least percuctents in soil and should only be used for burn down

Answer 4

Ester

Question 5

Generally which formulation salt amine ester has greater vulitility and therefor greater potential for offsite injury

Answer 5

Ester is most vulitile

Question 6

The phenoxide are small organic compounds that form negatively charged ions in the soil that are subject to leaching but leaching is minimized due to 3

Answer 6

Adsorbsoin in clay soils
Removal from soil by plants
Rapid microbial degradation

Question 7

Which herbicide family within the group 4 herbicides is stable in straw and manure

Answer 7

Clopyaralid/ pyridines

Question 8

What are stem in joint symptoms in cereal from group 4 herbicides 3

Answer 8

Layover
Splayed
Stunted

Question 9

What are

Question 10

What are 3 head injury symptoms in cereal from the group 4 herbicides

Answer 10

Short bent or branched
Sterile or multiple florets
Distorted awns

Question 11

What are 4 stem injury symptoms in corn from group 4 herbicides

Answer 11

Shepherds crook
Twisting or bending of main stem
Lodging or gooseneckjng
Brittle snap

Question 12

Under what conditions are corn injoury symptoms in corn from group 4 herbicides more likely to ocurr 6

Answer 12

Course textured soil
After heavy rain
Cold temperature
Large temperature fluctuations
Late application
Sensitive hybrids

Question 13

descripe the injury sypmtoms to soybean leaves from the group 4 herbicides 4

Answer 13

turtle backing
leaf staping
cobra head
leaf cupping

Question 14

three benifits of the xtend and enlist crops are

Answer 14

some anual broadleave
perenial broadleaf
round up resistence crops

Question 15

one of the concerns of using rr2 xtend soybeans and enlist crops is injury to sensitive crops due to 4

Answer 15

tank contamination
drift
volitilation
temperrature invertion

Question 16

define volatile

Answer 16

something that evaperates redily at normal temps annd presure it changes from a liqued to a gas

Question 17

when does 90 percent of offsite movement due to volitilation with dicamba occur

Answer 17

within first 24 hours

Question 18

what was the first herbicide resistent weed where when

Answer 18

milton ontario, 1957, wild carrot

Question 19

what are two herbicide families that belong to the group 5 herbicides

Answer 19

atrazine and metribuzin

Question 20

which crop is aatrex used for

Answer 20

broadleaf in corn

Question 21

what crop is suncor used for weed control in

Answer 21

broadleaf in soybeans

Question 22

what are 4 preformulated mixtures of atrizine that can be used in corn

Answer 22

markman
converge
primextra
acuron

Question 23

what are 7 premixes that can be used for soybeans

Answer 23

conopy pro
bifectu
fierce
conquest
bounty
triactor
commenza

Question 24

when can atrazine be applied in corn 4

Answer 24

PP
PPI
POST
Pre

Question 25

when can sencore be applied to soybeans 3

Answer 25

PP PPI pre

Question 26

when group 5 herbicides are applied PP PPI Pre

Answer 26

roots

Question 27

when group 5 herbicides are aplpied POST

Answer 27

foilage

Question 28

how are group 5 herb translocated

Answer 28

apoplasticaly

Question 29

where do group 5 herbicides accumilate in the plant

Answer 29

leafs margins and leaf tips

Question 30

what is the mode of action of the triazines

Answer 30

photosynesis inhibitor

Question 31

what are two classifacations of the photosynthesis inhibitor

Answer 31

classical fast acting

Question 32

what is the selectivity of the group 5 herbicides

Answer 32

differential metabolism

Question 33

which group of weeds do the group 5 control

Answer 33

anual broadleaf weeds

Question 34

what are two common annual broadleaf weeds that atrazine is week on

Answer 34

velvet leaf and ragweed

Question 35

what are three common weeds that sencor is weak on

Answer 35

eastern black nightshade cv velvet leaf common ragweed

Question 36

what are 4 factors that incluence the lenght of residueal control

Answer 36

rate apllied weather soil type time of application

Question 37

what is the effect of weed control when group 5 is tankwixed with glyphosate

Answer 37

antagonism

Question 38

what are two corn injury symptoms from atrozine

Answer 38

intervienal chlorosis yellowing at leaf tips and margingd

Question 39

how would you describe group 5 damage to soybeans

Answer 39

intervienal chlorosis

Question 40

which leaves show group 5 injury first with soybeans

Answer 40

older leaves

Question 41

what are 4 casuses of soybean injury from sencor

Answer 41

soil charachteristics aplication timeing weather sensitive cultuvar

Question 42

the degridation of atrozine is influenced by 3

Answer 42

soil om weather previus herbiside used

Question 43

under what conditoins would you expect greater carryover with atrazine 5

Answer 43

dry weather sandy soils high ph soils post application max lable rate

Question 44

how many group 5 resistent weeds are there

Answer 44

11

Question 45

when are the group 6 herbasides applied

Answer 45

Post

Question 46

are the group 6 contact or systemic

Answer 46

contact

Question 47

which group of weeds do group control

Answer 47

anual broadleave weeds

Question 48

what are two classifacations of the phoyosynthesis inhibitors

Answer 48

clasical and fast acting

Question 49

what are three charachteristics of the fast acting

Answer 49

plant death is more rapid little residue control sharp responce curve

Question 50

what mode of action is a group 6 herbicide

Answer 50

photosynthesis inhibitor

Question 51

what are threee basis of selectivity in group 6

Answer 51

differential interceptoin '' adsorbsion '' metabolism

Question 52

which crop is pardner used on

Answer 52

corn

Question 53

which crop is buctril m used on

Answer 53

cereals wheat

Question 54

which crop is infinity used on 2

Answer 54

barly wheat

Question 55

when should pardner be applied to corn

Answer 55

4-8 leaf stage

Question 56

when should buctril m be applied to cereals

Answer 56

2 leaf to flag

Question 57

why does the application of parder need to be delayed to v2 stage in corn

Answer 57

becouse cutical needs to form

Question 58

what are two weeds that buctril m provides beter control ofthan parder

Answer 58

pigweed musterd

Question 59

what are three weed species that bromoxynill has excelent activity on

Answer 59

buckwheat grounsel lambsquarter

Question 60

what common weed is bromoxilnyl weak on

Answer 60

pigweed

Question 61

what three weeds does infinity have better coverage of than buctril m

Answer 61

cickweed cleavers canada fleabane

Question 62

does pardner have any residule activity in the soil

Answer 62

none

Question 63

describe the injury symptoms og pardner in corn 2

Answer 63

chlorosis leaf burn

Question 64

describe the injury symptoms of parner in sybeans 2

Answer 64

chlorosis new growth not evident

Question 65

what are two weeds that are resistent to group 6 herbisides

Answer 65

rodroot piweed smooth pigweed