Vegetable Production Guide

Potatoes
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Table 4 Potato Seed Piece Treatments

This section was updated - 29 June 2021
Group

Product

Rate

Comments

Fusarium Seed Piece Decay

M

Tuberseal

(mancozeb)


Potato ST16

(mancozeb)


MancoPlus

(mancozeb)
500 g per 100 kg of seed
(4.5 kg per ton of seed)
  • Thoroughly coat the surface of whole or cut seed pieces with dust.
  • If treated whole seed is cut, make a second application to protect the cut surface.
  • Plant as soon as possible after treating.
  • If planting of cut seed is delayed beyond 2 days after treating, seed should be stored in open crates to allow air drying until dry before bagging or loose piling.
  • Do not use surplus treated seed pieces for food or feed.

Black Scurf, Silver Scurf and Fusarium Dry Rot

1

Senator PSPT

(thiophanate-methyl)
500 g per 100 kg of seed
(4.5 kg per ton of seed)
  • Does not control Black Scurf.
  • Also controls Verticillium Wilt.
  • For optimum control of Silver Scurf, ensure that seed tubers are completely free of soil.
  • Thoroughly coat the surface of whole or cut seed pieces.
  • Cut seed should be treated witin 6 hours of cutting.
  • If planting is delayed more than 1 to 2 days, treated seed should be stored for 2 or 3 days in open crates before bagging.
  • Do not use if seed was produced using Senator.
M3 & 12

Maxim MZ PSP

(fludioxonil & mancozeb)
500 g per 100 kg of seed
(4.5 kg per ton of seed)
  • Thoroughly coat the surface of whole or cut seed pieces.
  • If treated whole seed is cut, make a second application to protect the cut surface.
  • Plant as soon as possible after treating.
  • If cut seed needs to be stored or held for a few days, ensure adequate cool air movement throught the pile at relative humidity of 85 to 90%.
  • Do not pile cut and treated seed above 1.8m in height.
  • Store cut seed at or below 7ºC.
  • Do not use if seed was produced using Maxim.
  • Maxim PSP and Maxim D may be tank-mixed with Actara 240 SC to control CPB, aphids and leafhopper. See labels for details.  Obey the most restrictive label precautions.
  • Do not use an open cab tractor when planting seed treated with Maxim D.
12

Maxim PSP

(fludioxonil)
5.2 mL per 100 kg of seed
(47.1 mL per ton of seed)
12 &3

Maxim D

(fludioxonil & difenoconazole)
130 mL per 100 kg of seed
(1.2 L per ton of seed)
 

Heads Up

(Saponins of Chenopodium quinoa)
1 g per L of water

1 Litre of solutions per 100 to 264 kg of seed
  • Suppression only.
  • Apply to whole or cut seed.
  • Must be applied to germinating seed potatoes from peeking to full sprout, but before green leaves appear.
  • Ensure that the product is thoroughly dissolved in solution and agitate prior to application.
  • Thoroughly coat seed.
  • Do not store treated seed beyond planting time.
  • Do not use treated seed for animal feed or for food or oil purposes.
  • Treat seed in a well-ventilated area.
3 & 7

Emesto Silver

(penflufen & prothioconzole)
20 mL/100 kg of seed
  • ALSO CONTROLS SEEDBORNE RHIZOCTONIA STEM AND STOLON CANKER.
  • Apply 150 mL of slurry/100 kg of seed.
  • Apply to whole or cut seed.
  • Treat seed immediately after cutting.
  • Agitate slurry solution as needed.
  • Thoroughly coat seed.
  • Periodically clean and sanitize all surfaces which may come in contact with cut seed.
  • As part of seed-treating and cutting, apply an absorbent ingredient to improve suberization.
  • Plant as soon as possible after cutting and treating.
  • If cut seed needs to be stored for a few days, ensure adequate cool air flow through the pile at a relative humidity of 85-90%. Store at below 7°C, and do not pile above 1.8 m high.
  • Cover treated seed when transporting.
  • Do not use treated seed for food, feed or fodder.
  • Treat seed in a well-ventilated area.
  • For suppression of wireworm, Emesto Silver can be tankmixed with Titan ST. Follow the most restrictive label precautions.

3 & 12 fungicides

&

4 insecticide

Cruiser Maxx Potato Extreme

(fludioxonil/  difenoconazole/ thiamethoxam)
20 mL per 100 kg of seed
  • Also controls seed-borne stem and stolon canker, Colorado potato beetle, aphids and potato leafhopper.
  • Suppression only for black scurf.
  • For control of black scurf, may be tank-mixed with Maxim PSP.  See label for rate.
  • Apply using standard closed system slurry seed treatment equipment.
  • Ensure uniform coverage of seed.
  • Apply only in areas with adequate ventilation.
  • If soil conditions are ideal, plant immediately afer application.
  • If cutting, treating and storing is necessary; apply an inert dust to improve suberization.
  • If storing treated seed, ensure adequate cool air (7 to 10 °C) movement through the pile and relative humidity of 85 to 90%.
  • Do not pile cut and treated seed above 1.8 m in height.
  • Do not store treated potatoes for over 2 weeks.
  • Do not use on excessively sprouted seed.
  • Do not plant more than 128,700 kg of treated seed per day.  See label for Planting Rate/Planted Area Chart.
  • Toxic to bees.
  • Do not follow with an in-furrow or subsequent foliar application of a group 4 insecticide.
  • Observe a plantback interval of 120 days for crops not listed.

Aphids, Colorado Potato Beetle (CPB), Flea Beetle (overwintering adults), Leafhoppers

Admire 240 SPT

(imidacloprid)

 

26 to 39 mL per 100 kg of seed

Dilute with no more than 3 parts water to 1 part product
  • Provides early-season control of overwintering adult flea beetle and aphids.
  • See label for mixing instructions to prepare spray.
  • Apply only in adequately ventilated area.
  • Apply to seed pieces using a shielded spray system.
  • Good coverage of seed piece is required.
  • Do not follow with an in-furrow or any subsequent foliar applications of imidacloprid or other group 4 insecticide.
  • Do not apply more than 1.165 L/ha (0.668 L/acre) per year (see label for seeding rates).
  • Observe plant back interval of 9 months for peas and beans, 30 days for cereal grains and 12 months for all other crops.
  • If cover crop is planted after harvest, do not use for feed.
  • Do not plant treated seed when rainfall is forecast for the next 48 hours.

Alias 240 SC

(imidacloprid)
4

Actara 240 SC

(thiamethoxam)
See label for rate per 100 kg of seed.
  • Does not control flea beetle.
  • Rates used are based on the seeding rate.  See label for Rate Conversion Chart.
  • See label for mixing instructions.
  • Deliver at a dluted volume of 263 mL/100 kg of seed.
  • Do not add excess water to the cut seed.
  • Apply only in adequately ventilated area.
  • If it is necessary to store treated seed, ensure adequate cool air movement through the pile and relative humidity of 85 to 90%.
  • Do not pile cut and treated seed above 1.8 m in height.
  • Store cut seed at or below 7 °C.
  • Do not follow with an in-furrow or any subsequent foliar applications of thiamethoxam or other group 4 insecticide.
  • See label for plantback interval.
  • Can also be applied in-furrow and as a foliar treatment.  See Table 2:  Potato Insect Control of this guide for details.
28

Verimark

(cyantraniliprole)
 
45 mL per 100 kg of seed pieces
 
OR:
 
1000 mL/ha (405 mL/acre) based on 2200 kg/ha (890 kg/acre) planting rate
  • Controls CPB only.
  • Ensure adequate ventilation in application area.
  • Use only a closed treatment system.
  • Good coverage of seed-piece is required for optimal control.
  • Follow treatment with an application of a fungicide potato seed treatment or inert dust.
  • Do not follow seed treatment with any subsequent applications of a group 28 insecticide (in-furrow, soil or foliar). 
  • Do not use open cab planting equipment when planting treated potato seed pieces.
  • Do not exceed more than 1.5 L/ha (0.6 L/acre) per season.
  • Can also be applied in-furrow.  See Table 2:  Potato Insect Control of this guide for details.

Fortenza

(cyantraniliprole)
10 to 22.5 mL per 100 kg of seed pieces
  • Controls CPB only.
  • Ensure adequate ventilation in application area.
  • Use only a closed treatment system.
  • Good coverage of seed-piece is required for optimal control.
  • Do not add excess water to cut seed.
  • Avoid treating excessively sprouted seed.
  • Follow treatment with a dust/talc treatment to improve suberization.
  • If it is necessary to store treated seed, ensure adequate cool air movement through the pile and relative humidity of 85 to 90%.
  • Do not pile cut and treated seed above 1.8 m in height.
  • Store cut seed at or below 7 °C.
  • Do not follow seed treatment with any subsequent applications of a group 28 insecticide (in-furrow, soil or foliar). 
  • Do not use open cab planting equipment when planting.
  • Toxic to bees.  Minimize dust exposure to pollinators during planting.

Wireworms

Titan ST

(clothianidin)
20.8 mL per 100 kg of seed
(188.7 mL per ton of seed)
  • Damage suppression only.
  • Apply only in areas with adequate ventilation.
  • Apply as a diluted spray onto seed using a shielded spray system.
  • Good coverage of seed pieces is required.
  • Do not dilute with any more than 6 parts water to 1 part Titan ST insecticide.
  • Plant as soon as possible after cutting and treating.
  • Do not use treated seed for food or feed.
  • Observe a one year plant back interval (PBI) for leafy, root and tuber vegetables (except for potatoes). A 30 day PBI is required for cereal grains and grasses.
  • Do not make a subsequent application of a Group 4 insecticide following this seed treatment application.

 

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