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33 Cards in this Set
- Front
- Back
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What is WSN |
Water soluble nitrogen |
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What are the two forms of granular fertilizers |
Quick release and slow release |
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Typically how long does quick release stay? |
3-4 weeks |
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Typically how long does sulfur coated fertilizer last? |
8 weeks |
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Typically how long does polymer coated fertilizer last? |
12 weeks |
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What are the two forms of slow release fertilizers? |
Sulfur coated and polymer coated |
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What are the recommended times of year to fertilize a lawn? |
May and October (July) |
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Where would you expect to see salt damage? |
Where grass would be along roadways and walk ways |
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What are some benefits to using organic based fertilizers? |
Long activity, provide nutrients in available forms, and adds organic matter to the soil. |
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How are fertilizer recommendations for turf made? |
By 100 sq feet |
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How do you find how many pounds of fertilizer there are in a bag? |
Weight by analysis |
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How do organic fertilizers benefit the soil? |
Provide nutrients in available forms, improve chemical characteristics. |
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Which type of fertilizer has the greatest potential for salt burn? |
Granular |
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What is banding? |
Fertilizer is directly on the root system. In a band or row |
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What effects the release rate of slow release fertilizers? |
H2O and microbes |
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What is NR-151? |
Ban of phosphorus from fertilizers |
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An example of a water insoluble nitrogen would be? |
IBDUB sulfur coated urea |
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Why is organic so expensive? |
You need to use a lot |
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Drawbacks of using a foliar fertilizer? |
Very expensive, water soluble, only nitrogen, magnesium, and iron pass through leaf surface. |
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How do you maximize the effects of a turf fertilization program? |
Follow recommendations, use proper rate, do once a year. |
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What type of inorganic fertilizer has the longest residual activity? |
Slow release |
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What are two organic sources of nitrogen? |
Milorganite, blood meal, green manure |
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What does the "type" number on an SR fertilizer tell you? |
Days of release |
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How do you correct excessive levels of salt in soil? |
Leach it |
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How do you determine the true cost of a fertilizer? |
Cost of bag divided by pounds of nitrogen |
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How do grass clippings affect a lawn fertilization program |
Adds about 1 pound of nitrogen per year |
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What is fertigation? |
Fertilizer in irrigation water |
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What is a split application ? |
Break up to avoid salt damage, available all season long |
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What does the size grade number tell you? |
How big the pellet is |
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What is the drawback to using organic fertilizers? |
Low percent of nutrients, slow release, small analysis |
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How much WIN do you apply at every fertilization? |
50% |
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What is broadcasting? |
Spin dry fertilizer over a large area like a field |
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What is Foliar fertilizer |
Applying liquid fertilizer straight to the leaves |
