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2. 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 ...

3. Fertilizer - Wikipedia

   en.wikipedia.org/wiki/Fertilizer

   Urea is highly soluble in water and is therefore also very suitable for use in fertilizer solutions (in combination with ammonium nitrate: UAN), e.g., in 'foliar feed' fertilizers. For fertilizer use, granules are preferred over prills because of their narrower particle size distribution, which is an advantage for mechanical application.

4. The Best Time To Apply Weed Killer To A Lawn, According To ...

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   Grow a lawn where weeds won't be able to compete for the same resources to minimize weeds from sprouting. Weeds are simply 'a plant out of place' that need the same resources— sunlight, water ...

5. Ammonia volatilization from urea - Wikipedia

   en.wikipedia.org/wiki/Ammonia_volatilization...

   The soil's pH also has a strong effect on the amount of volatilization. Specifically, highly alkaline soils (pH~8.2 or higher) have proven to increase urea hydrolysis. One study has shown complete hydrolysis of urea within two days of application on such soils. In acidic soils (pH 5.2) the urea took twice as long to hydrolyze. [7]

6. Controlled-release fertiliser - Wikipedia

   en.wikipedia.org/wiki/Controlled-release_fertiliser

   Other coated products use thermoplastics (and sometimes ethylene-vinyl acetate and surfactants, etc.) to produce diffusion-controlled release of urea or other fertilizers. "Reactive Layer Coating" can produce thinner, hence cheaper, membrane coatings by applying reactive monomers simultaneously to the soluble particles.

7. Herbicide - Wikipedia

   en.wikipedia.org/wiki/Herbicide

   By analyzing soil as a dynamic system, rather than an inert substance, he was able to apply techniques such as perfusion. Quastel was able to quantify the influence of various plant hormones , inhibitors, and other chemicals on the activity of microorganisms in the soil and assess their direct impact on plant growth .