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  2. Scientific control - Wikipedia

    en.wikipedia.org/wiki/Scientific_control

    For example, if the fertilizer was spread by a tractor but no tractor was used on the unfertilized treatment, then the effect of the tractor needs to be controlled. A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable (i.e. confounding variables). [1]

  3. Broadcast spreader - Wikipedia

    en.wikipedia.org/wiki/Broadcast_spreader

    Hand-pushed broadcast spreader. A broadcast seeder, alternately called a broadcaster, broadcast spreader or centrifugal fertilizer spreader (Europe) or "spinner" (UK), is a farm implement commonly used for spreading seed where no row planting is required (mostly for lawns and meadows: grass seeds or wildflower mixes), lime, fertilizer, sand, ice melt, etc., and is an alternative to drop ...

  4. The Brinly holds up to 100 pounds of fertilizer and measures some 40 inches wide, so it’s an ideal choice for aerating, seeding, and fertilizing large yards–think half an acre or more.

  5. Manure spreader - Wikipedia

    en.wikipedia.org/wiki/Manure_spreader

    A manure spreader, muck spreader, or honey wagon is an agricultural machine used to distribute manure over a field as a fertilizer. A typical (modern) manure spreader consists of a trailer towed behind a tractor with a rotating mechanism driven by the tractor's power take off (PTO). Truck mounted manure spreaders are also common in North America.

  6. Late fall is one of the best times to apply lawn fertilizer ...

    www.aol.com/fall-one-best-times-apply-110752684.html

    Choosing a fertilizer blend. As a general rule of thumb, most cool season grasses require 2 to 4 pounds of nitrogen per 1,000 square feet each year, and a majority of this nitrogen should be ...

  7. Gardeners: Here's Everything You Need to Know about Using ...

    www.aol.com/gardeners-heres-everything-know...

    Before fertilizing your garden here's what to know about organic fertilizers, whether you need them, and how to find the right ones for you.

  8. Precision agriculture - Wikipedia

    en.wikipedia.org/wiki/Precision_agriculture

    This practice allows the farmer to vary the rate of fertilizer across the field according to the need identified by GPS guided Grid or Zone Sampling. Fertilizer that would have been spread in areas that don't need it can be placed in areas that do, thereby optimizing its use. Around the world, precision agriculture developed at a varying pace.

  9. Biological half-life - Wikipedia

    en.wikipedia.org/wiki/Biological_half-life

    Absorption half-life 1 h, elimination half-life 12 h. Biological half-life ( elimination half-life , pharmacological half-life ) is the time taken for concentration of a biological substance (such as a medication ) to decrease from its maximum concentration ( C max ) to half of C max in the blood plasma .

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