Nematicides: Seed Treatment ExpectationsTreatment Expectations

Charles OverstreetExtension Nematologist

Poncho®/VOTiVO® combined with AERIS® on Cotton

Avicta Complete CottonCotton

Acceleron® Nematicide, Fungicide and Insecticide Seed Treatment for Cotton

Avicta & Telone 3 gal/a left Check right

Avicta & Telone 3 gal/a right Avicta left

Telone 3 gal/a & Temik 3.5 lb/a left Temik 3.5 lb/a right

Check 2011 Test

137= Avicta

134= Telone 1.5 gal/a

Avicta and telone 3 gal

2900

3000

3100

3200

3300

Seed

cot

ton

lb/a

3199

3038

Nematicide trial at Northeast Research Station across different soil zones

2500

2600

2700

2800

Check Avicta Avicta & Telone 3 gal/a

Seed

cot

ton

lb/a

2748

2750

3000

3250

3500

3750

Check across ECa-dp areas in a fieldSe

ed c

otto

n lb

/a

2000

2250

2500

2750

0.0 20.0 40.0 60.0 80.0 100.0

Seed

cot

ton

lb/a

Eca-dp

3000

3250

3500

3750

4000

4250

Avicta across ECa-dp areas in a fieldSe

ed c

otto

n lb

/a

2000

2250

2500

2750

3000

0.0 20.0 40.0 60.0 80.0 100.0

Seed

cot

ton

lb/a

Eca-dp

2960

3200

3440

3680

3920

Avicta & Telone 3 gal/a across ECa-dp areas in a fieldSe

ed c

otto

n lb

/a

2000

2240

2480

2720

0.0 20.0 40.0 60.0 80.0 100.0

Seed

cot

ton

lb/a

Eca-dp

Poncho Votivo

Labeled for cotton nowProvides a barrier to nematodes

*Less nematodes move into the roots*Delays development*Delays development

600

800

1000

1200

1400

1058

1314

Cott

on li

nt lb

/aNematicide trial at Northeast Research Station in 2011

0

200

400

600

Gaucho Aeris & Poncho Votivo

Cott

on li

nt lb

/a

Using seed treatments to

manage nematodes in 2012

Right situations

RootRoot--knot nematodesknot nematodes

ReniformReniform nematodesnematodesRight situations

Wrong situations

ReniformReniform nematodesnematodes

Cemetery North field

Zone 1Zone 1 ZoneZone 22

Levee field

Zone 3Zone 3 Zone 4Zone 4

Levee field

Right situations for seed treatmentsAny field where nematode populations are low

*Crop rotation with a resistant or poor host of the nematode* Nematodes just are not present in field or only recently been introduced

Areas within a field which have strong soilsAreas within a field which have strong soils*Higher clay content in either the upper or lower soil profile (Higher ECa-sh or ECa-dp)

Wrong situations for seed treatmentsAny field where nematode populations are high or very high

*Monoculture of cotton* Situations where the preceding rotation crop was a good host for the nematode

Areas within a field which have weak soilsAreas within a field which have weak soils*High sand content in either the upper and particularly in the lower soil profile (Low ECa-sh or ECa-dp)

Additional nematicide Crop rotation

Seed treatments may be your only option

Other nematicides may simply not be available*Telone is in short supply*Temik is currently unavailable

Lack of equipment or expertise in applying site-Lack of equipment or expertise in applying site-specific use of other nematicides like Telone

Don’t know the status of nematodes in fields*Nematodes are persistent in the soil and especially deep within the soil profile

Questions?