Programs are based on the Nitrogen to be applied and the other How much of the other nutrients were applied (Percent of N in bag) X 100 = 2 lbs of fertilizer This means that 2 lbs (1/2 lb of Nitrogen you want to apply over 1000/sq.ft) divided by 25% It will look like using the fertilizer analysis 25-4-12: Nitrogen on the bag and then multiply that answer by 100. Specific amount to be applied per 1000/sq.ft. "amount needed" is referring to the pounds of nitrogen per 1000/sq.ft. The specific amount of Nitrogen needed per 1000/sq.ft. Use the formula below for determining how much fertilizer to apply when you know If you know a simple formula, you can get the fertilizer rate correct Will need to know how much fertilizer to apply to deliver that amount. If the fertilizer rate calls for anĪpplication of half a pound (.5 lbs) of Nitrogen per 1000/sq.ft., you ft.ĭepending on your grass type, the total annual Nitrogen is divided up Determining how much to apply per 1000/sq. Single application for some grasses such as centipedegrass. (6.25ĭivided by 5) This fertilizer rate will deliver too much Nitrogen in a Putting down 1.25 lbs of Nitrogen per 1000 sq.
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Says the 25 lb bag of 25-4-12 will cover 5000 sq. Simply replace the example's numbers for your bag's weight and percentages. You can use the formula regardless of what the fertilizerĪnalysis is. The same formula can be used to see how much other nutrients are in the bag.Ģ5 lbs X 0.04(P) = 1 lb of Phosphorus in the bag by weightĢ5 lbs X 0.12(K) = 3 lbs of Potassium in the bag by weightīag contains 6.25 lbs Nitrogen, 1lb of Phosphorus and 3 lbs of To get the lbs of Nitrogen: multiply the total weight of the bag times the percent of Nitrogen.Ģ5 X 0.25 = 6.25 lbs of Nitrogen in the bag.Ģ5 (25 lb bag of fertilizer) X 0.25 (25% analysis on the bag) = 6.25 lbs Nitrogen Using the analysis above of 25-4-12, lets see how much Nitrogen (25) Weights, Measures, and Metric Conversions For easier use, the link opens to a new window so you do not lose this page. Metric, imperial, and contemporary units of different countries. It will look like this on the bag:Īmount below, the following link provides online conversions including In thisĮxample, let's say the fertilizer you are using has 25% Nitrogen, 4% A fertilization plan using your grass type’s specific Nitrogen needs spread out over a year.įertilizer rates are important for delivering the right amount.The grass type you have planted and its annual nitrogen needs.Most fertilizer programs are based on two primary things.
#Scotts standard spreader 2lbs per. how to
It is not hard if you understand how to calculate it. While fertilizer bags have printed suggestions on how much to apply, they are largely based on achieving customer expectations, not necessarily what the customer needs for his grass.ĭon't realize that you can accurately adjust the rates depending on the number of applications and the specific needs of Do not leave spreader open when making turns.Understanding fertilizer rates can be confusing.
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Spreader Overlap: To avoid streaks or misses, overlap spreader patterns approximately 1-1/2 feet (50 cm). Then apply back and forth in the longest direction.įor Irregular-Shaped Lawns: Apply one header strip around the entire lawn for a turning area, then apply back and forth. Adjust the screw until the calibration line and raised ridge or front edge of the shut-off bar meet.įor Rectangular Lawns: Apply two header strips across each end for a turning area. To adjust the alignment, use a small wrench to turn the black calibration screw at the lower end of the control wire leading from the micrometer rate setting barrel. With the micrometer set at 6 and the trigger squeezed against the handle, the front edge of the projecting ridge on the shut-off bar should be aligned with the calibration line located on the 2nd or 3rd tooth from the center. Turn the spreader over so that you are looking at the outside of the bottom of the hopper. You can see the video on the spreader's page or you can follow these instructions:Ĭheck the calibration by first adjusting your micrometer setting to 6. If you don't find the Scotts Turf Builder Classic Drop Spreader listed on the bag it doesn't mean it can't be used, it just means you will have to calibrate it to find out what setting is the right one. The setting instructions are found on the back side of the fertilizer bag, the spreaders they list will be ones the manufacturer has tested their product on. The setting to use on a spreader will depend on the product being used.