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Five questions on in-crop nitrogen top dressing – with a "Right Source at the Right Rate, Right Time and Right Place" theme…
Nitrogen
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Canola generally needs nitrogen, phosphorus and sulphur fertilizer each year. A small percentage of fields will also benefit from a potassium application. The following article suggests what canola needs and what soil and crop residue could provide. The rest will come from fertilizer…
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Surface spreading of nitrogen (N) fertilizer in the fall can lead to major N losses. The better option for fall is banding into the soil – preferably as late as possible but not so late that the soil is too cold to reseal around the band…
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Fall fertilizer Fall fertilizer is best applied as close to freeze up as possible to balance two objectives: (1) To allow soil to seal over the band (frozen soil may……
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The ideal time for a sulphur top up is any time before flowering, but a top up at early flowering may pay off if plants are showing signs of sulphur deficiency. The ideal time for a nitrogen top up is before the 5-leaf stage of canola, but AAFC research out of Indian Head, Saskatchewan, shows that nitrogen top dress as… -
UCC field-scale trials in 2016 and 2017 compared the farmer’s base nitrogen rate with a rate 25% higher. With all site years averaged, adding extra nitrogen did provide a statistically significant yield response, but the increased nitrogen did not always provide an economic return when compared to the base rate… -
Fall fertilizer is best applied as close to freeze up as possible to balance two objectives: (1) allow soil to seal over the band and (2) reduce losses due to high microbial activity in warm soils…
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Some growers are already doing soil tests and making fall fertilizer applications. While this may not be the ideal timing for soil tests of fertilizer applications (closer to freeze up is better), this timing may satisfy a number of other issues, including custom soil-sampler availability, wanting test results before fall application, and checking to see if current soil nutrient levels…
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Western Canada has a short growing season. Crops in Western Canada start to take up nutrients early and uptake escalates quickly. For these reasons, the ideal timing for fertilizer application is at seeding. This saves an extra pass over the field and ensures that the expected fertilizer requirement is in place when the crop needs it. But there are times…
