seed treatment research/media/system/1/0/2/5...insecticidal seed treatment efficacy means from 11...
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Seed Treatment
Research
Blake WilsonField Crops Entomologist
Insecticidal Seed Treatments
Insecticidal seed treatments
Dermacor X-100 (chlorantraniliprole)
–Controls: RWW, armyworm, borers
–Cruiser (thiamethoxam)
–NipsIt Inside (clothianidin)
–Controls: RWW, colaspis, aphids,
– chinch bugs, thrips
Insecticidal seed treatment efficacy
Means from 11 independent field trials
across LA, TX, MS, AR
0
5
10
15
20
25
30
Non-treated NipsIt Inside CruiserMaxx Dermacor
X100
RW
W la
rva
e/c
ore
30% Yield loss
15-17% Yield loss
6.5% Yield loss
Fortenza (cyantraniliprole) – New
Seed Treatment
Synegenta
Available for planting in 2019
Evaluated at Crowley 2015-2018
Fortenza (cyantraniliprole) – New
Seed Treatment
Effectively controls weevils but not
stemborers
Fortenza alone better than neonicotinoids
Fortenza with Cruiser comparable to
Dermacor
Efficacy against clolaspis, armyworms,
other pests unknown
Insecticidal seed treatments
Dermacor X-100 (chlorantraniliprole)
Can be water-seeded
Rate per acre
Fortenza (cyantraniliprole)
Cruiser (thiamethoxam)
NipsIt Inside (clothianidin)
Cannot be water-seeded
Rate per 100 lbs seed
Available with fungicides
Selecting Seed Treatments
• Justified in nearly all fields in
southern LA
• Price?
– NipsIt and Cruiser cheaper at low
seeding rates, but have reduced control
• Fungicides?
– Difficult to determine where needed
• Second Crop?
– Dermacor controls borers
Seed Treatment Combination Trial 2019
Early: F = 39.5, df = 9, 27; P < 0.001
Late: F = 21.3, df = 9, 27; P < 0.001
0
5
10
15
20
25
30
35
RW
W/C
ore
Early planted
Late PlantedA
A A A
BBBB
B
B
A
A
B B
BCC CC CC
3000
4000
5000
6000
7000
8000
9000
10000
11000
Yie
ld (
lbs/a
cre
)
Early planted
Late planted
Seed Treatment Combination Trial 2019
Early: F = 1.1, df = 9, 30; P = 0.392
Late: F = 21.3, df = 9, 27; P < 0.001
A A
ABA
AB
BB
B
A A
Selecting Seed Treatments
• Stem borers
– Increasing problem
– High populations is SW Louisiana
– Late planting most at risk
• Armyworms
– Can be severe in some cases
– Late planted rice most vulnerable
• Colaspis
– Greatest threat in soybean rotation
– Not a problem in crawfish rotation
Research findings 2019Stem borer yield loss 1-2% per
whitehead/m2
Colaspis
Photos by N. Hummel
Reduces stands following soybeans
Seed Treatment
Combinations
• Does not increase weevil control over
Dermacor alone
• Does increase spectrum of pests
controlled
Questions?
Blake Wilson
985-373-6193
Call me or your extension
agent with any questions.