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…
Fertility
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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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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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Five questions on the mathematics of soil sampling and analysis of results… -
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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… -
Tissue sampling can be used to diagnose crop problems that may be nutritionally related and to identify any nutrients that may be limiting yields…
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Improved crop moisture may have improved the yield potential of canola crops. If nutrient availability does not match this new yield potential, in-crop top-dressing of nitrogen or sulphur (or both) could provide an economic benefit. Find out how to do it…
