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#11
01-15-2003, 02:50 PM
 greenngrow LawnSite Senior Member Join Date: Feb 2000 Location: Central Kentucky Posts: 405
Ric,

I agree with you on the first one but where does the 44 and 82 factors come from.

Now for my formula that I use 20-10-10 with trace elements
I apply at a rate of 5 lbs per K
urea 46-00-00 517 lbs
scu 42-00-00 200 lbs
DAP 18-46-00 434 lbs
MOP 00-00-60 333 lbs
Pel Lime 416 lbs
Trace elem. 100 lbs
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MARK DOUGLAS
#12
01-15-2003, 09:34 PM
 Ric LawnSite Fanatic Join Date: Sep 2001 Location: S W Florida Posts: 11,105
Greenngrow

Fertilizer number on the bag is for P-oxide and K-oxide. To convert to elemental, use the factor .44 and .83

P2O5 That is 2 atoms of P with 31 electrons and 5 atoms of oxygen with 16 electrons.

Therefore there are a total of 62 electrons of P and 80 electrons of oxygen. Total electrons of 142. 142 electron times 44% = 62 or the total P.

Pretty simple once you look at it. Just think how Scotts and other big fertilizer companies get over on the dumb homeowners.
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"TG doesn't give a rats ass about being "Responsible" as long as sales/production quotas are met. That's it in a nutshell. A recipe for disaster IMO." Ted Putnam 2/28/14

You can lead a Donkey to water but you can't make the Jackass Drink

"As Americans you have the right to be stupid." John Kerry

"Life is tough, but it's tougher when you're stupid.” John Wayne.
#13
01-17-2003, 08:16 AM
 Ric LawnSite Fanatic Join Date: Sep 2001 Location: S W Florida Posts: 11,105

Change the word "electron" to read "Atomic weight". Atomic weight is the protons plus neutrons. If fact P has only 15 electrons and O has only 8.

Sorry I do not research my replies. Since I cannot spell I sometimes replace technical terms with one I can spell. I had another word in mind when I wrote this post and couldn’t spell it. So I plugged in the word electron instead of Atomic weight. I am not a chemist therefore only have a simple working knowledge of it.
__________________
.

"TG doesn't give a rats ass about being "Responsible" as long as sales/production quotas are met. That's it in a nutshell. A recipe for disaster IMO." Ted Putnam 2/28/14

You can lead a Donkey to water but you can't make the Jackass Drink

"As Americans you have the right to be stupid." John Kerry

"Life is tough, but it's tougher when you're stupid.” John Wayne.
#14
01-17-2003, 10:51 AM
 greenngrow LawnSite Senior Member Join Date: Feb 2000 Location: Central Kentucky Posts: 405
Hey Ric that's good that you explained that to me. I really imagine the looks you get when you explain that to your customers. You might want to give that the Atomic of BS while your at it.LOL I am justing having fun with you. I think that nice that you have this down. I was never good in chemistry....
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GREEN-N-GROW Landscape Solutions

MARK DOUGLAS
#15
01-17-2003, 05:54 PM
 tremor LawnSite Bronze Member Join Date: Aug 2001 Location: Stratford, CT Posts: 1,476
Ric,

I botched the Urea calculation after adjusting for the Nitrogen faction of the DAP.
The rest of mine was correct based on fertilizer law.
With respect to the periodic table of elements, you're more accurate. But fertilizer labeling laws have been wrong for a lot longer than I can remember.

Steve
#16
01-18-2003, 04:36 PM
 Ric LawnSite Fanatic Join Date: Sep 2001 Location: S W Florida Posts: 11,105
Tremor

Yep fertilizer law vs Periodic table. But what the heck You said find my mistake. So I just tried to pimp you real good.

BTW did you get my PM??
__________________
.

"TG doesn't give a rats ass about being "Responsible" as long as sales/production quotas are met. That's it in a nutshell. A recipe for disaster IMO." Ted Putnam 2/28/14

You can lead a Donkey to water but you can't make the Jackass Drink

"As Americans you have the right to be stupid." John Kerry

"Life is tough, but it's tougher when you're stupid.” John Wayne.
#17
01-18-2003, 06:08 PM
 LAWNGODFATHER LawnSite Fanatic Join Date: May 2001 Location: St. Louis, Missouri Gateway to the west Posts: 6,750
Quote:
 Originally posted by tremor Fun exercise LGF, Thanks Steve
This one was all Harold Fox, but now you all have me thinking real hard............

You're gonna have some emails.

Ric tried hard didn't he?.... Good job Ric, right on the money also.

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