Pest

Product

Rate /acre

PHI

Comments

Aphids

Seed Treatments

Gaucho 480 F

Gaucho XT

Cruiser 5FS

In-furrow

Di-Syston 15G

Di-Syston 8 EC

Foliar

Warrior T 1EC

Di-Syston 8 EC

1.5 fl oz / 100 lb

3.4 fl oz / 100 lb

0.75 fl oz / 100 lb

5.0 - 6.6 lb

1 pt

2.6 – 3.8 oz

(1gal /50-33 ac)

8-12 oz

At-plant

At-plant

30

30 wheat

30 barley

60 oats

Seed treatments provide early season control of aphids and barley yellow dwarf.  Also suppress Hessian fly.  Seed treatments only labeled on wheat.

Apply 1.4 oz/1,000 drill ft in-furrow.  Do not apply Di-Syston to rye or oats.  Do not graze within 75 days.  Di-Syston controls Hessian fly but is less effective than Gaucho or Warrior in suppressing aphids and barley yellow dwarf virus.  Di-Syston 8E is highly toxic.  Do not graze Di-Syston 8EC. Apply in furrow at planting.  Broadcast treatment is significantly less effective than in-furrow application.

Warrior is superior to other aphid treatments for suppression of barley yellow dwarf virus under SC conditions.  However, it is only labeled on wheat and triticale. 

Labeled for wheat, oats, and barley.  Do not graze after any foliar application of Di-Syston.  Highly Toxic. Use lower rate for late season broadcast sprays.

Aphid treatments are most likely to be profitable on early-planted high-yield-potential wheat (60+ bu/ac).  The key pest is the oat-bird cherry aphid which is the major vector or carrier of barley yellow dwarf virus.  This aphid typically has a dark green body with reddish area on the “rear end”.  Treatment is recommended on high yield wheat if you find 8 oat-bird cherry aphids per row foot prior to jointing.

English grain aphids (light green bodies with long black “exhaust pipes” protruding upward from rear end) increase during jointing and move to heads as they emerge.

 The treatment guideline for English grain aphid is 2-3/stem during jointing; 5/stem at head emergence to blooming; 10/stem at milk; dough stage is too late to spray.

Armyworm

Sevin 80S

Sevin XLR

Sevin 4F

Warrior T 1EC

Lannate LV

Lannate 90 SP

Fury 1.5EC

1.75 lb

1.5 qt

1.5 qt

3.8 oz

1.5 pt

0.5 lb

2.0-3.4 oz

0 forage

21 grain

30

7

14

Treat when armyworm population reaches 2 per drill ft.

Sevin labeled for wheat and triticale only. 

Warrior also provides season-long aphid control. Labeled only for wheat and triticale.

Do not graze within 10 days.  Labeled for rye, barley, oats, and wheat.

Wheat label only.

Fall Armyworm

Sevin 80S

Sevin XLR

Sevin 4F

Warrior T 1EC

Lannate LV

Lannate 90 SP

1.75 lb

1.5 qt

1.5 qt

3.8 oz

1.5 pt

0.5 lb

0 forage

21 grain

30

7

Treat if stand is threatened before frost.

Do not graze within 10 days.

Sevin labeled for wheat and triticale only. 

Labeled only for wheat and triticale.

 Labeled for rye, barley, oats, and wheat.

Cereal Leaf Beetle

Furadan 4F

Malathion 57 EC

Malathion 5EC

Malathion 8EC

Warrior T 1EC

Fury 1.5 EC

0.5 pt

1.5 pt

1.5 pt

1 pt

2.6-3.8 oz

(1gal /50-33 ac)

2.0-3.4 oz

apply before heads emerge

7

30

14

Cereal leaf beetles first hatch out in March and peak feeding occurs in April. Treat if you have 1 larva on every other stem (average of 0.5 larvae / stem).

Furadan labeled on wheat and oats.  Apply Furadan before heads emerge from boot.  Do not feed treated forage to livestock.

Malathion labeled on oats, rye, barley, wheat.

Warrior also provides season-long aphid control. Labeled only for wheat and triticale.

Fury labeled only on wheat.

Grasshoppers

Sevin 80S

Sevin XLR

Sevin 4F

Warrior T 1EC

Malathion 8 EC

Malathion 57 EC

Methyl Parathion 4 EC

Fury 1.5 EC

1.25-1.75 lb

1.0-1.5 qt

1.0-1.5 qt

2.6-3.8 oz

1.25 pt

2.0 pt

1 pt

3.4-4.3 oz.

    0 forage,

21 grain

30

7

15

14

Sevin labeled for wheat and triticale only. 

Warrior labeled for wheat and triticale only.

Labeled on wheat, oats, rye, barley.

Labeled on wheat, oats, rye, barley.

Labeled on wheat.

Hessian Fly

Varietal resistance is the most economical way to manage Hessian fly.  HF resistance declines over time so check the latest ratings in the Wheat Cheat Sheet.  Treat susceptible varieties on farms with a history of economic damage.

In-furrow

Di-Syston 15G

Di-Syston 8E

Seed Treatment

Gaucho 480 F

Gaucho XT

Cruiser 5FS

6.6 lb

1.4 oz/1,000 drill ft in-furrow

1 pt

in furrow

1.5 fl oz/100 lb

3.4 fl oz/100lb

0.75-1.33 fl oz/100

At-plant

At-plant

At-plant

Do not apply Di-Syston to rye or oats.  Do not graze within 75 days.  Di-Syston also controls early season aphids but is less effective than Warrior in suppressing barley yellow dwarf virus.

Di-Syston 8E is highly toxic.  Do not graze. Apply in furrow at planting.  Broadcast treatment is significantly less effective tan in-furrow application.

Seed treatments suppress Hessian fly and also provide early season control of aphids and barley yellow dwarf.