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Forage: Spring Black Stem (Phoma medicaginis)

Author: OMAFRA Staff
Creation Date: 04 July 2005
Last Reviewed: 28 July 2007
Pub 812: Field Crop Protection Guide > Chapter 4 : Forages > Spring Black Stem

Excerpt from Chapter 4, Field Crop Protection Guide, Order this publication

Table of Contents

  1. Integrated Pest Management Options
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Integrated Pest Management Options

Disease is favoured by cool, wet weather conditions. Cut early to reduce quality loss from premature leaf drop.

Foliar Treatment
boscalid – Lance
Active Ingredient boscalid
Trade Name Lance
Rate per hectare (product) 420 g per ha
Rate per acre (product) 170 g per ac

Comments
For seed production only. Ground and aerial application. Apply at 20%-50% flowering. Apply every 7-14 days if disease persists or weather conditions are favourable for disease development. Do not graze or feed treated hay to livestock. Maximum of 3 applications per year.

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