Dry Edible Beans: Potato Leafhopper

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Dry Edible Beans: Potato Leafhopper (Empoasca fabae)

Author:	OMAFRA Staff
Creation Date:	04 July 2005
Last Reviewed:	15 June 2009

Pub 812: Field Crop Protection Guide > Chapter 5: Dry Edible Beans > Potato Leafhopper

Excerpt from Chapter 5, Field Crop Protection Guide, Order this publication

Description
Integrated Pest Management Options
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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.

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 5 FS
Active ingredient	thiamethoxam
Trade name	Cruiser 5 FS
Rate (product)	86-143 mL per 100 kg seed

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

thiamethoxam + metalaxyl-M + fludioxonil - Cruiser Maxx Beans
Active ingredient	thiamethoxam + metalaxyl-M + fludioxonil
Trade name	Cruiser Maxx Beans
Rate (product)	195 mL per 100 kg seed

Comments
For commercial application only. Provides early-season protection (replaces one foliar insecticide spray). Compatible with Rhizobium-based inoculants. Check with inoculant manufacturers for details prior to use. Do not graze or feed livestock on treated areas for 45 days after planting. For anthracnose control, tank-mix with 10 mL of Dynasty 100FS per 100 kg seed.

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 and aeria application. 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 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.

cyhalothrin-lambda – Silencer 120EC
Active ingredient	cyhalothrin-lambda
Trade name	Silencer 120EC
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. 14 days to harvest. Maximum 3 applications/yr. Do not graze or harvest treated forage, straw or hay for livestock feed.

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