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Dry Edible Beans: Potato Leafhopper (Empoasca fabae)

Author: OMAFRA Staff
Creation Date: 04 July 2005
Last Reviewed: 28 July 2007
Pub 812: Field Crop Protection Guide > Chapter 6: Dry Edible Beans > Potato Leafhopper

Excerpt from Chapter 6, Field Crop Protection Guide, Order this publication

Table of Contents

  1. Description
  2. Integrated Pest Management Options
  3. Related links...

Description

Adults are pale-green, wedge-shaped, winged insects about 3 mm long with piercing and sucking mouth parts. Adults are broadest towards the head, the body tapering evenly to the wing tips. They have a row of six rounded, white spots behind their head. Nymphs are smaller than adults and are wingless.

Image 1. Potato leafhoppers are pale green, wedge-shaped, winged insects. Immature nymphs are smaller and wingless.
Image 1. Potato leafhoppers are pale green, wedge-shaped, winged insects. Immature nymphs are smaller and wingless.

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Integrated Pest Management Options

Some tolerant varieties available. See OMAFRA Publication 811, Agronomy Guide for Field Crops, for action threshold charts and sampling methods.
Soil Applied at Planting Only
phorate – Thimet 15 G
Active ingredient phorate
Trade name Thimet 15 G
Rate per hectare (product) 7.25-11 kg per ha
Rate per acre (product) 2.9-4.4 kg per ac

Comments
Lock and load. Must be applied in a 10-15 cm band over the row behind the planter shoe, in front of the press wheel. Do not place in direct contact with seed. Do not feed the foliage of treated beans within 60 days.

Seed Treatment

Consider using insecticide seed treatment on fields with a history of leafhopper infestations, to reduce the number of foliar applications required. Research has shown insecticide seed treatment to last at least 4-6 weeks after planting, eliminating the need for at least one foliar insecticide application.

thiamethoxam – Cruiser 350 FS
Active ingredient thiamethoxam
Trade name Cruiser 350 FS
Rate (product) 86-143 mL per 100 kg seed

Comments
For use in commercial seed treaters only. Use higher rate when insect populations are expected to be high. Do not graze or feed livestock on treated areas for 45 days after planting.

Foliar Treatment

Some tolerant varieties available. See OMAFRA Publication 811, Agronomy Guide for Field Crops, for action threshold charts and sampling methods.

dimethoate – Cygon 4 E, Lagon 480 EC
  Cygon 4 E Lagon 480 EC
Active ingredient dimethoate dimethoate
Trade name Cygon 4 E Lagon 480 EC
Rate per hectare (product) 0.7-1.0 L per ha 0.7-1.0 L per ha
Rate per acre (product) 280-400 mL per ac 280-400 mL per ac

Comments
Residual activity expected from this product. Do not feed treated threshings or crop refuse to livestock. 7 days to harvest.

endosulfan – Thiodan 4 EC, Thionex EC, Thionex 50 WP
  Thiodan 4 EC Thionex EC Thiodan 50 WP
Active ingredient endosulfan endosulfan endosulfan
Trade name Thiodan 4 EC Thionex EC Thiodan 50 WP
Rate per hectare (product) 1.5-2.5 L per ha 1.5-2.5 L per ha 1.1-1.5 L per ha
Rate per acre (product) 0.6-1.0 L per ac 0.6-1.0 L per ac 400-600 mL per ac

Comments
Do not feed treated threshings or crop refuse to livestock. 2 days to harvest. Do not use on lima beans.

cyhalothrin-lambda – Matador 120E
Active ingredient cyhalothrin-lambda
Trade name Matador 120E
Rate per hectare (product) 83 mL per ha
Rate per acre (product) 34 mL per ac

Comments
Has no systemic activity. Ground application only. For best results, apply during the early morning, before temperatures rise, and during the evening, past the heat of the day. Use 100-200 L of water/ha. Maximum of 3 applications/yr. 14 days to harvest. Do not re-enter treated areas until 24 hr of treatment. Do not graze or feed on treated forage.

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Related links...

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