Nematicides: Seed Treatment Expectations - Seed... · Nematicides: Seed Treatment Expectations...
Transcript of Nematicides: Seed Treatment Expectations - Seed... · Nematicides: Seed Treatment Expectations...
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?