Cereals: Growth Regulators for Lodging Reduction in Cereals

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Pub 812: Field Crop Protection Guide > Chapter 4: Cereals >
Growth Regulators for Lodging Reduction in Cereals

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Field Crop Protection Guide 2011-2012, Order 2011-2012 publication

Table of Contents

1. Integrated Pest Management Options
   • ethephon – Ethrel (Spring Barley), Ethrel (Spring Wheat), Ethrel (Winter Wheat)
2. Related links...

Integrated Pest Management Options

Visit the Ontario Cereal Crops Committee website at www.gocereals.ca for performance trial information. High-risk factors for lodging include fields with a history of manure applications and legume hay.

	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	1.25-2.5 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
PHI*	35
Comments	Ground and aerial application. Timing of application is critical. Use lower rate unless expecting severe lodging conditions. 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.

 

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Related links...

• Insects
• Cereals