Scotts Turf Builder differences.

treetoronto3

9 years ago

Hi there, I was looking at the different Turf Builder products, there is the regular one, Pro, and Green Max. \

Green Max has the lowest count of 27-0-2, but has 5% iron. Spreader setting 4.25

Pro has higher percent counts at 32-0-4. Spreader setting 3.75.

The regular one has a count of 30-0-3. Spreader setting 4.

The higher the percent, the lower the setting. Is it all basically the same amount of fertilizer going into your lawn?

Is there any difference except for the higher Iron in GreenMax?

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Comments (5)

User
9 years ago
Since the percentage of N is higher, you have to apply less product and thus the spreader setting goes down.

You have to look at the bags/labels, there may be differences in the percentage of slow release N as well.
treetoronto3
Original Author
9 years ago
Yes I get that, but then what is the benefit of the "pro", if you are reducing the setting when percentages get higher, you are essentially administering the same amount regardless of what product you use. I listed all the counts above. When N gets higher, the setting goes down.
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User
9 years ago
Right, like I said you have to check the label, the difference is probably in the percentage of slow release N. You're still targeting the same amount of N, but one might be 25% slow release, the other might be 50% slow release.
User
9 years ago
Look at the "Guaranteed Analysis" section of the label on each bag. In addition to differences in the proportions of WSN (fast release) and WIN (slow release produced either by a polymer or sulfur coating) there is often a difference in the source of the N contained in the bag (urea, ammonium sulfate, ammonium nitrate, etc.). The differences in application rates is directly related to the total percentage of N content in the bag. The universally accepted quantity of N to be applied at one time is 1 pound per one thousand square feet. For illustrative purposes only, a bag that is only 25% N will require you to apply twice as much product as a bag that contains 50% nitrogen to get that one pound of nitrogen.
owlnsr
9 years ago
last modified: 9 years ago
Spreader rate settings are useless.

Like Ridge said, you need to target the 1# N per 1000 square feet.

So, let's take a standard 12.5 # bag of Scott's Turf Builder Lawn Food, 30-0-3.

12.5# * 0.30 = 3.75 # of Nitrogen

Let's say your lawn was 7500 square feet.

3.75#N / 7.5k square feet = 0.5 # N per 1000 square feet.

So, in this example you wouldn't have enough nitrogen to reach the desired 1# per 1000 square feet.

In fact, you would need 2 bags to do that.

The spreader settings are pointless.... the better approach is to determine how much product that you need, and then use A LOW setting on your spreader. Then spread the measured product across the lawn evenly until 100% of the product has been applied.