Effect of Seeding Date on Barley Yields as Reported by Farmers

 
 
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 One of the farm's most important inputs is information. Farmers weigh a large number of variables in deciding what, how and when to plant.

Alberta Management Insights (AMI Information) crop variety and yield information is published by AFSC, in co-operation with Alberta Agriculture and Food, as an on-line service that allows you to find information based on your legal land description.

This series shows yield data from the main soil zones and the effect of seeding date. Overall, this data shows that all crops benefit from early seeding in most parts of Alberta. Early seeding is an example of a good management practice that improves yield without extra cost! However, time constraints prevent many farmers from seeding all their crops early. Thus, producers must choose which crops to seed first. The yield data from the right soil zone will help producers decide which is the most profitable crop planting sequence for their situation.

The information in the attached charts shows three years of data (1999-2001), so farmers can review seeding date performance under varying weather conditions. The actual weekly frequency of seeding is shown for each crop, and producers can see the "normal" date as well as how many manage to seed early. Management and environmental influences have not been standardized in the data, so caution is advised when interpreting the graphs.

Barley Seeding Date PatternEffect of Seeding Date on Barley Yield
Black Soil Zone
Black-Dark Gray East Soil Zone
Black-Dark Gray West Soil Zone
Brown Soil Zone - on Fallow
Brown Soil Zone - on Stubble
Dark Brown Soil Zone - on Fallow
Dark Brown Soil Zone - on Stubble
Dark Gray-Gray Soil Zone
Peace River Region Zone
Thin Black Soil Zone
Black Soil Zone
Black Dark Gray East Soil Zone
Black-Dark Gray West Soil Zone
Brown Soil Zone - on Fallow
Brown Soil Zone - on Stubble
Dark Brown Soil Zone - on Fallow
Dark Brown Soil Zone - on Stubble
Dark Gray-Gray Soil Zone
Peace River Region
Thin Black Soil Zone

To use this seeding date and yield information most effectively in planning a crop planting sequence, producers should consider the following factors.

1.Compare the effect of seeding date in each year. Does the yield decline after the same date consistently in each year? Is there an initial time period where yield does not fall? Is there a higher yield loss trend in one or two years that indicates a high risk for later seeding? Try not to read too much precision into the weekly differences (for example, 2 or 3 bu/acre difference is often not meaningful). Remember that each end of the curves have the least precision since they are based on the least number of records. Thus large changes at the ends of a curve should be disregarded unless a good explanation can be given.

2.

What is the yield loss (bu/acre per week) after any initial plateau?

3.

Are higher value grades being pursued with certain crops? For example, edible peas versus feed, malt barley versus feed. Early seeding will be helpful to achieve the higher grades in addition to higher yields.

4.

Is the planned seeding date compatible with the crop maturity requirements and the local growing season (average days before killing fall frost)?

5.

Considering both yield loss and expected price for the grades being pursued, compare the revenue losses per week. Crops that lose the most revenue per week are the strongest candidates for early seeding.

Alberta Management Insights is the result of a government partnership. Agriculture Financial Services Corporation (AFSC) is the "manager" of the information and the lead on the project, and Alberta Agriculture, Food and Rural Development (AAFRD) is an integral partner in the development and delivery of the AMI information.
 
 
 
 

Other Documents in the Series

 
  Effect of Seeding Date Crop Yields as Reported by Farmers: Alberta Management Insights
Effect of Seeding Date on Barley Yields as Reported by Farmers - Current Document
Effect of Seeding Date on Canola Yields as Reported by Farmers
Effect of Seeding Date on Wheat Yields as Reported by Farmers
Effect of Seeding Date on Oat Yields as Reported by Farmers
Effect of Seeding Date on Pea Yields as Reported by Farmers
 
 
 
 
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For more information about the content of this document, contact Stacey Tames.
This information published to the web on November 8, 2002.
Last Reviewed/Revised on November 14, 2005.