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Nematicide active ingredients, application rates, application methods, and application timing for the sweetpotatoes field experiments conducted at LSU AgCenter Northeast Research Station in 2021 and 2022. DBP refers to days before planting.
Product
Active Ingredient
Product Application Rate
Application Rate (a.i.)
Application Method
Application Timing
Telone II
1,3-dichloropropene
74.8 L/ha
84.9 kg/ha
Shank
21 DBP
Velum
Fluopyram
500 ml/ha
238 g/ha
In-furrow
2 DBP
Vydate
Oxamyl
18.7 L/ha
4.28 kg/ha
In-furrow
2 DBP
Salibro
Fluazaindolizine
2.24 L/ha
1.12 kg/ha
In-furrow
2 DBP
AgLogic
Aldicarb
16.8 kg/ha
2.52 kg/ha
In-furrow
2 DBP
Majestene
Bacterial metabolites
18.7 L/ha
-
In-furrow
2 DBP
Nimitz
Fluensulfone
8.18 L/ha
3.92 kg/ha
In-furrow
2 DBP
Effect of soil treatment and experimental repetition on the final abundance of reniform nematode (Rotylenchulus reniformis) in soil and storage root weight of sweetpotato planted into potted field soil from the LSU AgCenter Macon Ridge Research Station. Soil treatments sharing the same letter within a column do not differ significantly (P > 0.05), according to Tukey's HSD test.
Factor
Level
Rotylenchulus reniformis per 500 ml soil
Storage Root Weight (g)
Soil Treatment
Untreated
13,790
a
29.8
Pasteurized
2,155
c
32.1
Fluopyram
10,560
ab
21.8
Oxamyl
8,340
ab
30.5
Fluazaindolizine
10,295
ab
36.0
Aldicarb
6,575
b
31.1
Majestene
11,055
ab
30.7
Fluensulfone
6,890
b
28.4
Experiment
1
9,435
32.0
2
8,025
28.0
P-value
Soil Treatment
0.045
0.530
Experiment
0.136
0.188
Interaction
0.749
0.701
2021 effect of soil treatment on the yield of US#1, canner, and jumbo grade sweetpotato harvest at the LSU AgCenter Northeast Research Station. Soil treatments sharing the same letter within a column do not differ significantly (P > 0.05), according to Tukey's HSD test.
Soil Treatment
Yield (Mg/ha)
U.S.#1
Canner
Jumbo
Total Marketable Yield
Control
6.8
ab
7.4
0.1
14.2
1,3-dichloropropene
9.2
a
6.5
1.0
16.7
Fluopyram
8.9
ab
9.1
0.4
18.4
Oxamyl
5.5
b
7.9
0.8
14.3
Fluazaindolizine
6.2
ab
8.3
0.5
15.0
Aldicarb
5.5
b
8.0
1.9
15.4
Majestene
9.6
a
8.1
0.3
18.0
Fluensulfone
7.0
ab
8.4
0.6
15.9
P-value
0.017
0.892
0.493
0.425
Effect of soil treatment and experimental repetition on the final abundanceof reniform nematode (Rotylenchulus reniformis) in soil and storage root weight of sweetpotato planted into potted field soil from the LSU AgCenter Northeast Research Station. Soil treatments sharing the same letter within a column do not differ significantly (P > 0.05), according to Tukey's HSD test.
Factor
Level
Rotylenchulus reniformis per 500 ml soil
Storage Root Weight (g)
Soil Treatment
Untreated
31,060
a
15.5
b
Pasteurized
3,515
c
19.0
ab
Fluopyram
15,790
b
18.7
b
Oxamyl
29,350
ab
17.6
b
Fluazaindolizine
15,540
b
18.1
b
Aldicarb
36,890
a
22.2
ab
Majestene
29,110
ab
30.6
a
Fluensulfone
29,400
ab
16.7
a
Experiment
1
18825
b
25.1
a
2
35465
a
14.5
b
P-value
Soil Treatment
<0.001
0.005
Experiment
<0.001
<0.001
Interaction
0.122
0.073
2022 effect of soil treatment on the yield of US#1, canner, and jumbo grade sweetpotato harvest at the LSU AgCenter Northeast Research Station. Soil treatments sharing the same letter within a column do not differ significantly (P > 0.05), according to Tukey's HSD test.
Soil Treatment
Yield (Mg/ha)
U.S.#1
Canner
Jumbo
Total Marketable Yield
Control
7.4
b
3.4
1.8
12.6
1,3-dichloropropene
9.7
ab
4.4
3.0
17.1
Fluopyram
9.0
ab
3.7
1.0
13.6
Oxamyl
12.0
a
2.8
0.7
15.5
Fluazaindolizine
9.4
ab
3.6
3.5
16.5
Aldicarb
11.1
a
3.7
1.7
16.5
Majestene
9.2
ab
3.6
2.3
15.1
Fluensulfone
5.3
b
3.3
2.3
10.9
P-value
0.017
0.908
0.396
0.498
2021 effect of soil treatment on the abundance of reniform nematode (Rotylenchulus reniformis) in soil planted with sweetpotato at the LSU AgCenter Northeast Research Station in 2021. Soil treatments sharing the same letter within a column do not differ significantly (P > 0.05), according to Tukey's HSD test.
Soil Treatment
Rotylenchulus reniformis per 500 ml soil
Pre-Fum
At Plant
Mid-Season
Harvest
Control
4,125
1,188
a
5,575
a
5,875
a
1,3-dichloropropene
3,000
188
b
350
b
1,963
b
Fluopyram
4,625
1,750
a
1,825
b
2,575
b
Oxamyl
1,000
1,438
a
888
b
3,148
ab
Fluazaindolizine
4,625
1,500
a
3,170
ab
3,395
ab
Aldicarb
5,500
1,063
a
1,950
b
2,200
b
Majestene
1,625
1,250
a
2,468
ab
2,968
ab
Fluensulfone
3,500
1,625
a
3,188
ab
3,438
ab
P-value
0.193
0.014
<0.001
0.004
2022 effect of soil treatment on the abundance of reniform nematode (Rotylenchulus reniformis) in soil planted with sweetpotato at the LSU AgCenter Northeast Research Station in 2022. Soil treatments sharing the same letter within a column do not differ significantly (P > 0.05), according to Tukey's HSD test.