Important Preharvest Intervals (PHIs) for Vegetables

Revised March 2013

Vegetable

Herbicide

PHI (days)

Beans

bentazon (Basagran)

30

clethodim (Select Max)

30 dry; 21 snap

clomazone (Command)

45 snap

halosulfuron (Sandea)

30

imazamox (Raptor)

0 for snap or dry

lactofen (Cobra)

55 snap Oregon only

quizalofop P-ethyl (Assure II)

15 snap; 30 dry; 60 lentils

sethoxydim (Poast)

15 snap; 30 dry

Beets, table

clethodim (Select or Prism)

30

clopyralid (Stinger)

30

ethofumesate (Nortron)

30

phenmedipham (Spin-Aid)

60

phenmedipham + desmedipham (Betamix)

50

triflusulfuron (Upbeet)

30

Broccoli, Brussels sprouts, cauliflower, leafy brassicas

clethodim (Prism or Select)

14 leafy brassica crops; 30 others

clopyralid (ClopyrAG)

30

S-metolachlor (Dual Magnum)

60

sethoxydim (Poast)

30, 15 for leafy greens

Cabbage

clomazone (Command)

45

clethodim (Prism or Select)

30

Carrots

clethodim (Prism or Select)

30

ethofumesate (Nortron)

30

fluazifop (Fusilade DX)

45

linuron (Lorox)

14

metribuzin (Sencor)

60

pendimethalin (Prowl)

60

sethoxydim (Poast)

30

Celery

linuron (Lorox)

67

Corn, sweet

clopyralid (Stinger)

30

dimethenamid-P (Outlook)

50

foramsulfuron (Option)

45

fluroxypyr (Starane)

31 ears; 47 forage

S-metolachlor (Dual Magnum)

30

simazine

45

tembotrione (Laudis)

45

topramezone (Impact)

45

Cucurbit/vine crops (all)

clethodim (Prism or Select)

14

clomazone (Command)

45

dimethenamid-P (Outlook)

90 on Golden Delicious squash

halosulfuron (Sandea)

30 squash, cucumber, and pumpkin; 57 melon

sethoxydim (Poast)

3 cantaloupe; 14 others

Garlic

bromoxynil (Buctril)

112

clethodim (Prism or Select)

45

dimethenamid-P (Outlook)

30

fluazifop (Fusilade DX)

45

oxyfluorfen (GoalTender)

60

pendimethalin (Prowl)

45

sethoxydim(Poast)

30

Lettuce and leaf crops

clethodim (Prism or Select)

14

fluazifop (Fusilade)

28 endive

pronamide (Kerb)

55

sethoxydim (Poast)

15 leaf; 30 head

triflusulfuron (UpBeet)

60 for endive and chicory

Onion

clethodim (Select Max, Prism)

45 bulb only

dimethenamid-P (Outlook)

30

ethofumesate (Nortron)

30

fluazifop (Fusilade DX)

45 bulb only

oxyfluorfen (Goal)

45 bulb only

oxyfluorfen (GoalTender)

60

paraquat (Gramoxone Inteon)

60

sethoxydim (Poast)

30

trifluralin (Treflan)

60 bulb only

Peas (green or English)

metribuzin (Glory)

50

quizalofop P-ethyl (Assure II)

30

Peppers, bell

pendimethalin (Prowl H2O)

70

S-metolachlor (Dual Magnum)

60

sethoxydim (Poast)

7

Rhubarb

clethodim (Select)

30

S-metolachlor (Dual Magnum)

62

mesotrione (Callisto)

21

pronamide (Kerb)

38

sethoxydim (Poast)

30

Spinach

clethodim (Prism or Select)

14

phenmedipham (Spin-Aid)

40

sethoxydim (Poast)

15

Tomato, eggplant

clethodim (Prism or Select)

20

metribuzin (Glory)

7

paraquat (Gramoxone Inteon)

30 tomato

pendimethalin (Prowl H2O)

70

rimsulfuron (Matrix)

45

sethoxydim (Poast)

20 tomato and eggplant

S-metolachlor (Dual Magnum)

90