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oxamyl (Vydate C-LV)

Vydate C-LV is mainly used to suppress nematodes, but it may also control several insect pests. Similar products containing oxamyl are available but use rates may vary.

For Nematodes: Application instructions vary with nematode species. In some cases, a shanked-in preplant fumigant may be recommended in addition to an oxamyl program. Applications of Vydate C-LV often start with an in-furrow application at planting followed by foliar applications via chemigation. The number and timing of foliar applications depends on the type of nematode. Chemigate using enough water to cover all tubers in the hill. The spray solution should be buffered to pH 5-7 for all applications. Do not apply more than 19.2 pints/A per season.

For Insect Pests:  Application timing and depends on the pest, and applications targeting nematodes may not always control insects. Apply via ground, aerial, or chemigation. For ground or aerial application use up to 2.1 pints/A. For chemigation, use 2.1 pints/A, with a maximum of 0.2-inch of water. The spray solution should be buffered to pH 5-7 for all applications. Do not make more than 8 applications.

Restricted
Material Type: Insecticides and Repellents
Chemical Classification: Carbamate
Signal Word: Danger/Poison
Formulation: Liquid
EPA Number: 352-532

Usage for oxamyl on Potatoes

Max Application per Season: 19.2pt

Planting to Pre-emergence

Target Application per Acre REI PHI MOA Eff. Notes
Nematodes (various spp.) See Label 48 h 7 d 1A G Vydate C-LV application instructions vary with nematode types. See instructions for Root-Knot Nematodes, Stubby-Root Nematodes, and Root Lesion Nematodes.
Root Lesion Nematodes 2.1-4.25 pt 48 h 7 d 1A G Start with an in-furrow application at planting and follow with foliar applications via chemigation. The in-furrow application is optional but is recommended to risk-averse growers and when following alfalfa.
Root-Knot Nematodes 2.1-4.25 pt 48 h 7 d 1A G Start with an in-furrow application at planting and follow with foliar applications via chemigation. The in-furrow application is optional but is recommended for risk-averse growers and when following alfalfa.
Stubby Root Nematodes 2.1-4.25 pt 48 h 7 d 1A G Start with an in-furrow application at planting and follow with foliar applications via chemigation. The in-furrow application is optional but is recommended to risk-averse growers and when following alfalfa. Corky ringspot may not be controlled if nematodes are not suppressed prior to tuber initiation.

Emergence to Row Closure

Target Application per Acre REI PHI MOA Eff. Notes
Aphid 1.1-2.1 pt 48 h 7 d 1A G-F Applications targeting nematodes may suppress aphids but are not expected to control large infestations. Apply before populations build, or before an earlier systemic aphicide breaks down. Re-treat after 14-days if aphids continue to move into the field and your goal is to limit spread of Potato Virus Y.
Beet Leafhopper 1.1-2.1 pt 48 h 7 d 1A G Apply when BLH populations are increasing. Re-treat after 14-days to maintain control of migrating BLHs. Making 3-4 applications late May to early July has been observed to control BLHs and prevent transmission of purple top disease. Later applications are not usually warranted.
Colorado Potato Beetle 0.5-2.1 pt 48 h 7 d 1A G Apply when 50% of eggs have hatched and most larvae are small. Expect 7-14 days of residual control.
Lygus Bugs 1.1-2.1 pt 48 h 7 d 1A G Apply when nymphs are present.
Nematodes (various spp.) See Label 48 h 7 d 1A G Vydate C-LV application instructions vary with nematode types. See instructions for Root-Knot Nematodes, Stubby-Root Nematodes, and Root Lesion Nematodes.
Root Lesion Nematodes 2.1 pt 48 h 7 d 1A G Apply the first foliar treatment of 2.1 pints/A via chemigation at crop emergence. Follow with three applications of 2.1 pints/A on 14-day intervals.
Root-Knot Nematodes 2.1 pt 48 h 7 d 1A G Apply the first foliar treatment of 2.1 pints/A via chemigation at crop emergence. Follow with 2.1 pints/A when soil degree-days reach 1440 DD °F, and then 2.1 pints/A on 14-day intervals until 7 days to harvest.
Stubby Root Nematodes 2.1 pt 48 h 7 d 1A G Apply the first foliar treatment of 2.1 pints/A via chemigation at crop emergence. Follow with three applications of 2.1 pints/A on 14-day intervals. Stubby root nematodes must be suppressed prior to tuber initiation to control corky ringspot.

Tuber Bulking

Target Application per Acre REI PHI MOA Eff. Notes
Aphid 1.1-2.1 pt 48 h 7 d 1A G-F Applications targeting nematodes may suppress aphids but are not expected to control large infestations. Apply before populations build, or before an earlier systemic aphicide breaks down. Re-treat after 14-days if aphids continue to move into the field and your goal is to limit spread of Potato Virus Y.
Colorado Potato Beetle 0.5-2.1 pt 48 h 7 d 1A G Apply when 50% of eggs have hatched and most larvae are small. Expect 7-14 days of residual control.
Lygus Bugs 1.1-2.1 pt 48 h 7 d 1A G Apply when nymphs are present.
Root-Knot Nematodes 2.1 pt 48 h 7 d 1A G The first foliar treatment should have been applied at crop emergence. Follow with 2.1 pints/A when soil degree-days reach 1440 DD °F, and then 2.1 pints/A on 14-day intervals until 7 days to harvest.

Late Tuber Bulking to Harvest

Target Application per Acre REI PHI MOA Eff. Notes
Root-Knot Nematodes 2.1 pt 48 h 7 d 1A G Foliar treatments, using 2.1 pints/A, should be applied via chemigation on 14-day intervals until 7 days to harvest. But do not exceed 19.2 pints/A total for the season.