The 4R panel at Canola Discovery Forum 2020 generated a lot of interest among attendees, which meant a lot of questions went unanswered. Fortunately, the panelists agreed to answer the questions after the fact. Here are answers to the unanswered questions…
4Rs
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A few days of warmer weather provide an opportunity to squeeze in some soil sampling. Soil tests are a basic practice of 4R Nutrient Stewardship…
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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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The ideal timing for fertilizer application is at seeding, but there are times when an in-crop top up of nitrogen or sulphur makes sense. This article provides tips to make top dressing work in those situations… -
Canola fields may benefit from a top-dress application of nitrogen or sulphur (or both) if logistics and weather prevented the full recommended application of fertilizer at or before seeding, and if improved weather conditions (rainfall, for example) have increased the yield potential of the crop…
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Canola fields may benefit from a top-dress application of nitrogen or sulphur (or both) if logistics and weather prevented the full recommended application of fertilizer at or before seeding, and if improved weather conditions (rainfall, for example) have increased the yield potential of the crop…
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If N fertilizer is applied in fall, it should be banded, preferably as late as possible – but not too late. Applying into frozen ground or on snow is not a good practice… -
Two key topics: How much fertilizer does canola need? and Why limit seed-placed fertilizer?… -
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 not seal). (2) To reduce losses due to high microbial activity in warm soils. The key strategy of fall fertilization is to store nitrogen……
