How Longer Can Winter Wheat Survive under Flooded Conditions?

Flooding tolerance of crops is impacted by a lot of things, but the main ones are: crop type, length of time under water and the temperature.

A couple of things that winter wheat has going for it is that is may not have yet broke dormancy when the water arrived and with relatively cool soil temperatures and cold water, things slow down for biological activities.  One report from North Dakota indicates that winter wheat could withstand flooded conditions for up to 3 weeks, but source is anecdotal https://www.ag.ndsu.edu/news/newsreleases/2009/april-20-2009/flooding-impacts-winter-wheat/

With all water-logged crops, once water has receded, inspect the crown to see if there are any signs of life. As weather warms and if soils remain saturated, there is still risk of oxygen deprivation in the plants and potential for seedling death.

 

General information on crop tolerance to flooding: https://www.gov.mb.ca/agriculture/crops/crop-management/seed-survival-flood-conditions.html

Impact of Flooding on Soil Fertility in Red River Valley: https://www.gov.mb.ca/agriculture/crops/crop-management/impact-of-flooding-soil-fertility.html

Forage Stands – Assessing Flooding Injury: https://www.gov.mb.ca/agriculture/crops/crop-management/forage-stands-assessing-flooding-injury.html

 

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What is the Extent of Crop Damage From the Heavy May Rains?

Compiled by the Staff at Crop Industry Branch, Manitoba Agriculture

Some areas of Manitoba received heavy rainfall during the May 2013 long weekend, resulting in the question “What is the extent of crop damage from the heavy rains?”

Field by field assessments over the coming days will give us a better idea of what impact the rains had.  The following though can provide you with an idea of what is potentially occurring and how to monitor fields to assess for damage and recovery.

What is the Extent of Crop Damage from the Heavy Rains – Updated May 2016

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