Canola Watch #4

March 11, 2015

AGRONOMY TOPICS FOR MARCH

Temperatures are warmer, days are longer and the fields are bare — in some areas, at least. March is often the month to finalize plans for the 2015 seeding season.

This month’s Canola Watch includes our Top 10 agronomy priorities for 2015. See the survey link at the bottom of the article to provide your own rankings and comments.

CanoLAB 2015 wraps up this week with two days in Brandon. All three locations covered similar topics, and below is an article covering key take-home messages.

As you settle crop nutrition rates, product, timing and placement for 2015, two issues to consider are sulphur rates, given its importance to canola in particular, and phosphorus rates and the potential for hidden hunger as soil reserves drop.

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TOP 10 AGRONOMY TOPICS FOR 2015

The Canola Council of Canada agronomy team came up with 12 agronomy priorities for 2015, and then ranked them. Here are the top 10, with our highest ranked topic placed first. We will cover these topics in more detail throughout 2015.

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CANOLAB 2015: TAKE HOME MESSAGES

CanoLAB 2015 wraps up this week in Brandon. The following short summaries from a few of the many CanoLAB instructors outline key “take home” messages for the eight topic areas.

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ARE WE MINING SOIL PHOSPHORUS?

Phosphorus fertilizer rates have, pretty generally, lagged crop removal for some time. As crops remove the soluble phosphorus in the soil, the soil’s large reserve of less soluble forms will transfer some more phosphorus into the available “labile” pool. However, this labile pool may be losing its ability to keep up, resulting in a “hidden hunger” for phosphate in many crops in western Canada.

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SULPHUR FORMS: WHICH TO USE AND WHEN?

Canola has a high demand for sulphur. Because of high sulphur variability across most fields, the common recommendation is to apply 10-15 lb./ac. of sulphur when soil test results show adequate levels and 20-25 lb./ac., or more, when tests show deficient levels. Read more for product options and when to use them.

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TEST YOUR SEED-PLACED FERTILIZER SAFETY

The safest method for seed-placed fertilizer is to put nothing with the seed. However, with low-medium soil test results, it’s often beneficial to put ammonium phosphate with the seed at a safe rate, and put all other fertilizers in a band away from the seed row.

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UCC: LOOKING FOR GROWERS FOR BORON TRIAL

As part of UCC 2015, the CCC agronomy team is looking for 12-15 growers from across the Prairies to test boron in field-scale trials in 2015.

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CLUBROOT R BREAKDOWN: PRELIMINARY RESULTS FROM 2014 SURVEY

Stephen Strelkov with the University of Alberta tested soil samples from 27 fields in Alberta that were seeded to resistant varieties in 2014 and showed more than expected levels of gall formation. Of those 27 fields, 15 have clubroot pathotypes that suggest the clubroot in those fields had overcome the resistance trait.

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SHORTER SEASON VARIETIES

Growers sometimes prefer earlier maturing canola varieties given their season zone or if spring seeding is later than expected. Here is a list of all NAMED varieties supported for registration at WCC/RRC since 2009 that have maturity of at least 1.0 day earlier than the checks. If this list is missing shorter-season varieties currently on the market, please email Jay Whetter at [email protected]

Many of these varieties are compared at the , which compares varieties based on days to maturity, as well as yield, lodging and height.

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READER QUESTION

A Canola Watch reader asks: “I am interested to find out how many acres of continuous canola are actually in the Peace compared to other areas.”

Leander Campbell from Agriculture and Agri-Food Canada provided four maps, including this one….

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COMING EVENTS

Upcoming events related to canola production and management…

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Canola Watch is a free, unbiased, timely and research focused weekly newsletter from the Canola Council of Canada Crop Production Team

You can subscribe to Canola Watch and search all the articles on the Canola Watch website

contact a Canola Council of Canada agronomy specialist

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