Appendix

Table A1. Suggested insecticides for controlling white grubs
Insecticide
(listed alphabetically)

Amount per 1,000 feet of row

Amount per acre on 40-inch row spacing

IRAC
group
Chlorethoxyfos + bifenthrin

1B
3A

(SmartChoice 5G) (SmartChoice HC) 3 .0–3 .5 oz
1 .0–1 .67 oz
2 .6–3 .0 lb
0 .8–1 .4 lb
Chlorpyrifos (Lorsban® 15G)  

8 .0 oz

 

6 .5 lb

1B
(Nufos® 15G)

8 .0 oz

6 .5 lb

Tefluthrin (Force® 3G)  

4–5 oz

 

3 .3–4 .1 lb

3A
Terbufos (Counter® 20G)  

6 .0 oz

 

4 .9 lb

1B
(Counter® 15G)

8 .0 oz

6 .5 lb

Remarks
Chlorethoxyfos + bifenthrin: Apply in furrow only, not banded .
Chlorpyrifos: Chlorpyrifos 15G is not labeled for band application . Must be in- furrow or T-band
Tefluthrin: Apply as banded, T-band, or in-furrow .
Terbufos: Read the supplemental label for information on potential crop damage if used in combination with some herbicides . Banded or in-furrow application only .

 

Table A2. Suggested insecticides for controlling wireworms
Insecticide
(listed alphabetically)

Amount per 1,000 feet of row

Amount per acre on 40-inch row spacing

IRAC
group
Chlorethoxyfos + bifenthrin

1B
3A

(SmartChoice 5G) (SmartChoice HC) 3 .0–3 .5 oz
1 .0–1 .67 oz
2 .6–3 .0 lb
0 .8–1 .4 lb
Chlorpyrifos (Lorsban® 15G)  

8 .0 oz

 

6 .5 lb

1B
(Nufos® 15G)

8 .0 oz

6 .5 lb

Tefluthrin (Force® 3G)  

4–5 oz

 

3 .3–4 .1 lb

3A
Terbufos (Counter® 20G)  

6 .0 oz

 

4 .9 lb

1B
(Counter® 15G)

8 .0 oz

6 .5 lb

Remarks
Chlorethoxyfos + bifenthrin: Apply only in furrow, not banded .
Chlorpyrifos: Chlorpyrifos 15G is not labeled for band application . Must be in- furrow or T-band . For best control of wireworms, apply as an in-furrow treatment . Consider using an insecticidal seed treatment with T-band applications .
Tefluthrin: Apply as banded, T-band, or in-furrow .
Terbufos: Read the supplemental label for information on potential crop damage if used in combination with some herbicides .

 

Table A3. Suggested Bt technology for controlling Mexican and western corn rootworms
Technology Rootworm toxin(s) Caterpillar toxin(s)
Agrisure 3000GT, 3011A mCry3A Cry1Ab
Agrisure Viptera 3111 mCry3A Cry1Ab + Vip3A
Agrisure 3122 mCry3A + Cry34/35Ab1 Cry1Ab + Cry1F
Agrisure Duracade 5122 mCry3A + eCry3 .1Ab Cry1Ab + Cry1F
Agrisure Duracade 5222 mCry3A + eCry3 .1Ab Cry1Ab + Cry1F + Vip3A
Herculex RW (HXRW) Cry34/35Ab1 none
Herculex XTRA (HXX) Cry34/35Ab1 Cry1F
Optimum TRIsect mCry3A Cry1F
Optimum Intrasect XTra Cry34/35Ab1 Cry1F + Cry1Ab
Optimum Intrasect XTreme mCry3A + Cry34/35Ab1 Cry1F + Cry1Ab
Optimum AcreMax RW Cry34/35Ab1 none
Optimum AcreMax1 (AM1) Cry34/35/Ab1 Cry1F
Optimum AcreMax TRIsect mCry3A Cry1F + Cry1Ab
Optimum AcreMax Xtra Cry34/35Ab1 Cry1F + Cry1Ab
Optimum AcreMaxXTrem mCry3A + Cry34/35Ab1 Cry1F + Cry1Ab
YieldGard VT Rootworm Cry3Bb1 none
YieldGard VT Triple Cry3Bb1 Cry1Ab
Genuity VT Triple PRO Cry3Bb1 Cry1A .105 + Cry2Ab2
Genuity SmartStax Cry3Bb1 + Cry34/35Ab1 Cry1A .105 + Cry2Ab2 + Cry1F
Mycogen SmartStax Cry3Bb1 + Cry34/35Ab1 Cry1A .105 + Cry2Ab2 + Cry1F

 

Table A4. Suggested seed treatments for controlling Mexican and western corn rootworms
Seed treatment Application rate

IRAC group

Clothianidin
(Poncho 600 at the 1 .25 mg ai/seed rate of Poncho 600)

4A

Apply 1 .25 mg ai/seed or 5 .64 fl . oz per 80,000 unit of seed
Imidacloprid (Gaucho 600)

4A

For Gaucho 600 apply 1 .34 mg ai/seed or 6 .0 oz per 80,000 unit of seed .
Thiamethoxam (Cruiser 5FS)

4A

Apply 1 .25 mg of active ingredient per kernel . Each fluid ounce contains 17 .7 grams of active ingredient .
Thiamethoxam + abamectin
(Avicta Complete Corn 250 and 500; Avicta Duo and Dou 250 Corn)
4A
6
For corn rootworm, must be tank mixed with Cruiser 5FS . See label for rates .
Must be applied only in Syngenta-certified seed treatment facilities .
Note: Shat seed treatments are insufficient to control heavy rootworm populations .
Remarks
Seed treatments protect roots adequately if the infestations are light or moderate . However, granular insecticides and Bt transgenic hybrids control large rootworm infestations better .
Clothianidin: For use in commercially available equipment designed for seed treatment only . Not for use in hopper-box, slurry box, or similar seed treatment applications used at planting .
Imidacloprid: May be applied by commercial seed treatment facilities, end use at agricultural establishments, or immediately before planting .
Thiamethoxam: Consult your Syngenta seed treatment representative for recommendations on slurry additives to use during applications of Cruiser 5FS . Follow the planter manufacturer’s recommendations for using talc, graphite, or other hopper box addi- tives at planting .

 

Table A5. Suggested granular and liquid insecticides for controlling Mexican and western corn rootworm larvae
Insecticide
(listed alphabetically)

Amount per 1,000 feet of row

Amount per acre on 40-inch row spacing

IRAC
group
Chlorethoxyfos + bifenthrin

1B
3A

(SmartChoice 5G) (SmartChoice HC) 4 .5–5 .0 oz
1 .5–1 .67
3 .9–4 .3 lb
1 .2–1 .4 lb
Chlorpyrifos (Lorsban® 15G)  

8 .0 oz

 

6 .5 lb

1B
(Nufos® 15G)
(Lorsban® 4E or Advanced) (Nufos 4E)

8 .0 oz

6 .5 lb
2 pt per acre 2 .0 pt per acre
Tefluthrin (Force® 3G)  

4 .0–5 .0 oz

 

3 .3–4 .1 lb

3A
Terbufos (Counter® 20G)  

6 .0 oz

 

4 .9 lb

1B
(Counter® 15G)

8 .0 oz

6 .5 lb

Chlorethoxyfos + bifenthrin: Apply only in furrow, not banded .
Chlorpyrifos: Chlorpyrifos is not effective on Mexican corn rootworm in high-pH soils in South Texas . Nufos 15G and 4E do not list Mexican corn rootworm as a pest controlled . Granules are not labeled for band application . Must be in-furrow or
T-band . Liquid formulation must be applied by T-band application only . Applica- tions made using a band width less than 5–6 inches may cause phytotoxicity under certain environmental conditions such as cool temperatures, wet conditions, and light soils . Lorsban 4E and Nufos can be chemigated to control corn rootworm larvae
Tefluthrin: See the label for application and timing instructions .
Terbufos: Read the supplemental label for information on potential crop damage if used in combination with some herbicides .
PRECAUTION: Certain sulfonylurea herbicides and organophosphate insecticides used in the same crop year on corn may injure the crop severely . Please read pesti- cide labels carefully .
IMPORTANT: Using the same soil insecticides year after year in the same field is not a good practice . For best results, rotate organophosphate (chlorpyrifos, terbufos) with other (tefluthrin) soil insecticides each year .
For all band applications, apply in a 6- to 8-inch band just behind seed drop and in front of covering shovels and press wheel or chain drag . Soil incorporation to about 1 inch deep is important .
Table A6. Suggested seed treatments for controlling southern corn rootworm
Seed treatment Application rate

IRAC group

Clothianidin
(Poncho 600 and Poncho 1250, the 1 .25 mg ai/seed rate of Poncho 600)
 

4A

For Poncho 600, apply 1 .25 mg ai/seed or 5 .64 fl oz per 80,000 unit of seed .
Imidacloprid (Gaucho 600)  

4A

For Gaucho 600 apply 1 .34 mg ai/seed or 6 .0 oz per 80,000 unit of seed .
Thiamethoxam (Cruiser 5FS)  

4A

Apply 1 .25 mg of active ingredient per kernel . Each fluid ounce contains 17 .7 grams of active ingredient .
Thiamethoxam +
Abamectin
(Avicta Complete Corn 250 and 500; Avicta Duo and Dou 250 Corn)
  4A
6
For corn rootworm, must be tank mixed with Cruiser 5FS . See label for rates .
Must be applied only in Syngenta-certified seed-treatment facilities .
Note: Seed treatments are insufficient to control heavy rootworm populations .
Remarks
Seed treatments protect the roots adequately if the infestations are light or moderate . However, granular insecticides and Bt trans- genic hybrids control under high rootworm infestations better .
Clothianidin: For use in commercially available equipment designed for seed treatment only . Not for use in hopper-box, slurry box, or similar seed treatment applications used at planting .
Imidacloprid: May be applied by commercial seed treatment facilities, for end use at agricultural establishments, or immediately before planting .
Thiamethoxam: Consult your Syngenta seed treatment representative for recommendations on slurry additives to use when apply- ing Cruiser 5FS . Follow planter manufacturer recommendations for using talc, graphite, or other hopper box additives at planting .