The biggest difference when you are applying The Andersons HCU 44 - 0 - 0 Humic Coated Urea as a liquid is that you are applying less product per application that you would when applying it as a broadcast granule. So you can apply up to 0.25 lbs of N per 1000 sq ft when you are diluting it in water, while as a granule you can apply up to 1 lb of N per 1000 sq ft per application. This product is not a slow release fertilizer, so the length of reponse time you have from each application will depend on the rate of product applied, not necessarily how you applied it.
The Andersons HCU 44-0-0 Humic Coated Urea would not be applied in the fall for a few different reasons. If you are looking for root development and a fertilizer that promotes that growth, you would need a fertilizer with a much lower Nitrogen content and a higher percentage of phosphorus (the middle number of the 3). You also do not want to apply that high of nitrogen levels late in the season as too much Nitrogen late in the year can create disease issues such as dollar spot the following spring.
How much area the Andersons HCU 44-0-0 Humic Coated Urea covers will depend on the rate at which you wish to apply it. For a dry broadcast application you can apply at 0.75 - 1.5 lbs of Nitrogen per 1000 sq ft, which would be at rates of 1.7 - 3.41 lbs of the product per 1000 sq ft. That would mean the 50 pound bag covers 14,000 - 29,000 sq ft when applied as a dry broadcast. Spray application rates will be lower since you need the product to dilute in water.
Please refer to the product label here for complete application instructions.
The Andersons HCU 44 - 0 - 0 Humic Coated Urea is a quick release fertilizer.
The Andersons HCU 44 - 0 - 0 Humic Coated Urea is more of a controlled-release fertilizer. According to the product label, HCU granules utilize a technology which bonds a uniform coating over a urea granule, not acting as a physical barrier to slow nitrogen release, but works in unison with urea to promote and enhance soil biology. For more specific product information or questions not listed on the label, you may wish to contact the manufacturer The Andersons directly via their website's contact page here.
The coverage of The Andersons HCU 44 - 0 - 0 Humic Coated Urea would depend on the rate that you use and how many pounds of nitrogen you need per 1000 sq ft. It will cover 14,600 to 29,400 sq ft. Please review the product label for the exact rate per 1000 sq ft.