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Cereals: Growth Regulators for Lodging Reduction in Cereals

Author: OMAFRA Staff
Creation Date: 04 July 2005
Last Reviewed: 28 July 2007
Pub 812: Field Crop Protection Guide > Chapter 5: Cereals >
Growth Regulators for Lodging Reduction in Cereals

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

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  1. Integrated Pest Management Options
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Integrated Pest Management Options

Visit the OMAFRA website for performance trial information. High-risk factors include fields with a history of manure applications and legume hay.

ethephon – Ethrel (Spring Barley), Ethrel (Spring Wheat), Ethrel (Winter Wheat)
  Ethrel
(Spring Barley)		 Ethrel
(Spring Wheat) 		Ethrel
(Winter Wheat)
Active ingredient ethephon ethephon ethephon ethephon
Trade name Ethrel Ethrel Ethrel Ethrel
Rate per hectare (product) 1.0-1.5 L per ha 1.0-2.0 L per ha 1.0-1.5 L per ha 1.25-1.5 L per ha
Rate per acre (product) 0.4-0.6 L per ac 0.4-0.8 L per ac 0.4-0.6 L per ac 0.5-1.0 L per ac
  2-row cultivar 6-row cultivar    

Comments
Ground and aerial application. Correct timing is critical. Use lower rate unless lodging conditions are expected to be severe. Apply when most of the tillers are between early flag leaf emergence to swollen boot stage (Zadok's 37 to 45). Do not apply after more than 10% of the awns have emerged (Zadok's 49). Use higher rates on crops that are heavily fertilized (more than 100 kg/ha of total available nitrogen) and have ample moisture (more than 25 cm of precipitation) and are prone to lodging. Do not apply within 35 days of harvest.

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