Register free!
Search
 
     

Click for Weather
Reply
 
Thread Tools Display Modes
  #11  
Old 06-16-2011, 04:27 AM
greendoctor greendoctor is online now
LawnSite Fanatic
 
Join Date: Mar 2008
Location: Honolulu, Hawaii
Posts: 7,294
Quote:
Originally Posted by Turf Dawg View Post
Please educate me. Why no coated urea? I like the sulfur coated urea especially in SA to help keep the soil PH down. Is this a bad thing? I treat lawns on a six week schedule.
There is not enough sulfur on sulfur coated urea to help with pH problems. Also, many researchers have found that using urea N feeds diseases. The conventional answer is to starve the lawn because most pre made granular fertilizers are all urea. I do not want urea or potassium chloride in what I am applying to lawns. That is why everything I apply is custom blended. Alkaline soils get all of their N from ammonium sulfate. Acid soils are fed calcium nitrate. Potassium is supplied by potassium nitrate. P is added if needed in the form of phosphoric acid. I also include the full label rate of chelated/soluble micronutrients.

My problem with coated fertilizers is exactly as quiet said, plus all of my lawns are cut at under 1" with a reel mower. The reel would pick up and shatter all of the granules, not to mention it is usual to use the basket in front of the reel. If the granules survive the reel mower, I never know when it is going to release and how much. Too much guessing for my liking. I know exactly what a liquid mix will do and for how long it will do it.
__________________
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Benjamin Franklin 1775

Sell not virtue to purchase wealth, nor Liberty to purchase power.
Benjamin Franklin Poor Richard's Almanac1738
Reply With Quote
  #12  
Old 06-16-2011, 08:10 AM
Turf Dawg's Avatar
Turf Dawg Turf Dawg is offline
LawnSite Gold Member
 
Join Date: Aug 2006
Location: Gainesville Texas
Posts: 3,649
The sulfur coated urea I get also has 5% sulfur and 2 or 3% iron. It seems I am getting pretty good color and not alot of surge growth, but I might try and locate some of the other. In most of our clay over limestone soil, test were showing that the P and K were buiding up so I swiched to N only except for fall. I may need to get some tested again since it has been awhile. I might also try and find some of the other sulfate type nitrogen.

To the OP
I did not mean to hijack. I was just wondering about what was already posted about the urea.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump





Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 05:37 AM.

Page generated in 0.06781 seconds with 7 queries