4Rs

  • Late fall fertilizer and soil testing

    4Rs

    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 […]

    READ MORE

  • Fall fertilizer questions for 2018

    4Rs

    Question: After a couple of bad years, cash flow is tight. How can a farm reduce fertilizer costs while still keeping the door open for a good rebound yield?
    Answer: (1) Soil sampling is often more valuable after a bad year because reserves could still be high. A soil test may show higher than expected carryover. Note that after a dry year, soil nutrient reserves may be concentrated a little deeper so test to at least 12” and probably to 24”. …

    READ MORE

  • Fall fertilizer planning: Sampling and application

    4Rs

    Whether taking a soil sample or applying fall fertilizer, mid September is generally considered to be too early for both.

    READ MORE

  • Top dress: How to identify nutrient deficiency

    4Rs

    In-crop fertilizer applications can rescue a deficiency situation. But what nutrients are deficient? Look for these symptoms.

    READ MORE

  • Why limit seed-placed fertilizer?

    4Rs

    Generally, small-seeded crops such as canola are more sensitive to seed-placed fertilizer, especially nitrogen and potassium.

    READ MORE

  • Quick test for safe rates of seed-placed fertilizer

    4Rs

    A quick test for the safety of seed-placed fertilizer is to turn off the fertilizer feed for about 100 feet, mark the spot, and go back and compare stand establishment in treated and untreated areas.

    READ MORE

  • Fertility planning: Safe seed-placed rates

    4Rs

    What are safe seed row fertilizer rates for phosphorus (P), sulphur (S) and nitrogen (N)? With lower seeding rates than in the past, this concern is greater than ever. Growers need to keep all seed viable to hit plant population targets. Therefore, the best practice is to put up to 20 lb./ac. of phosphate (max 40 lb./ac. of MAP) in the seed row – if P is needed – and put all other fertilizer in a band outside the seed row.

    READ MORE

  • PLAN fertilizer over the winter, don’t APPLY it

    4Rs

    Winter is a great time to review yield results, fertilizer rates and potential fertilizer shortcomings evident over the growing season. Winter provides the time to look at soil test results from the fall (and even sample fields that weren’t done sooner – albeit with specialized equipment for frozen soil) and make plans to pre-buy and maybe even take delivery of fertilizer – if the farm is set up for that.

    But winter is not the time to apply fertilizer.

    READ MORE

  • Fall soil sampling: The early option

    4Rs

    Closer to freeze up is best time to capture soil test results that more closely resemble the situation next spring. BUT…sampling soon after combining may satisfy a number of other issues: (1) That is the only time you can get the custom soil-sampler. (2) You want test results in time to make fall fertilizer applications. (3) You want to see if harvest-time soil nutrient levels could explain lower- or higher-than-expected yields this year.

    READ MORE

  • Timing and depth for fall fertilizer

    4Rs

    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.

    READ MORE

  • Early fall soil tests and fertilizer applications

    4Rs

    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 could explain lower- or higher-than-expected yields this year.

    READ MORE

  • Top dress tips for nitrogen and sulphur

    4Rs

    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 when an in-crop top up of nitrogen or sulphur makes sense.

    READ MORE

  • Fertilizer applications in November

    4Rs

    The combination of warm weather and moist soils is almost ideal for losses. Growers may want to reassess the nutrient situation with a time-of-seeding soil test, then top-dress if amounts are less than expected.

    READ MORE

  • Soil sampling in November

    4Rs

    Given the warm temperatures and moist soil conditions, the ideal time for fall soil samples may still be ahead of us. For results to be as close as possible to the situation next spring, the ideal time to take fall samples is when soil temperatures drop below 10°C and as close to freeze-up as possible.

    READ MORE

  • How to reduce fall N fertilizer losses

    4Rs

    The key strategy of fall fertilization is to store nitrogen over the winter in the ammonium form – which is held on clay and organic matter – and is referred to as stabilized N. To keep nitrogen in this stabilized ammonium form and protect it for crop use next year…

    READ MORE

Canola Watch