Register free!
Search
 
     

Click for Weather
Reply
 
Thread Tools Display Modes
  #1  
Old 09-19-2014, 08:31 PM
grassmasterswilson grassmasterswilson is online now
LawnSite Gold Member
 
Join Date: Mar 2007
Location: nc
Posts: 3,281
Zoysia soil test results??

Zoysia guys. Will you take a look at this soil test and make some recommendations? This zoysia lawn is terrible and I've tried to bring it back.

The first entry is the back lawn about 3k. The second is the shrubs surrounding the lawn he wanted me to take.

Soil test recommends no lime Buthelezi pH looks low. No other recommendations were made?
Attached Images
 
__________________
GrassMasters, LLC
Wilson, NC
www.grassmasterswilson.com
Reply With Quote
  #2  
Old 09-19-2014, 08:48 PM
jds912 jds912 is offline
LawnSite Member
 
Join Date: Apr 2011
Location: coastal ga.
Posts: 62
What is the ph? 4.8 ?
Reply With Quote
  #3  
Old 09-19-2014, 09:11 PM
RigglePLC's Avatar
RigglePLC RigglePLC is online now
LawnSite Fanatic
 
Join Date: Jul 2006
Location: Grand Rapids MI
Posts: 9,335
Is this a sand dune? The potash, (K2O) recommendation seems a bit high to me, but maybe if the soil is sandy then the potash cannot be retained. Potassium is usually water soluble, so normally it would be applied a little at a time, in each application. Applying 5 pounds at once would probably burn the grass; plus it would wash away in the first good rain. I am not sure I understand their test result print out. What is the soil texture? The percent organic matter? The CEC( wait--found it--CEC is 6.4--very low. Retention of cations would be low.
What is you average temp? Average rainfall? Irrigated? Wind blown salt spray? Such climate factors affect fertility recommendations.
Seems odd to me that there is no recommendation for lime in spite of very low pH. Maybe zoysia likes acid soil.

We have some soils experts here; they can give you a lot more information, and analysis.
Reply With Quote
  #4  
Old 09-19-2014, 09:28 PM
grassmasterswilson grassmasterswilson is online now
LawnSite Gold Member
 
Join Date: Mar 2007
Location: nc
Posts: 3,281
They used to send a 2 page report with graphs and other recommendations. The told lime amounts and types of fertilizer.

I have emailed them asking if the forms have changed as I'm not an agronomist and can't decipher from the current format.
__________________
GrassMasters, LLC
Wilson, NC
www.grassmasterswilson.com
Reply With Quote
  #5  
Old 09-20-2014, 01:43 AM
greendoctor greendoctor is offline
LawnSite Fanatic
 
Join Date: Mar 2008
Location: Honolulu, Hawaii
Posts: 7,383
Unless the intended landscaping involves centipede grass and rhododendrons., you are going to need lime. I would even suggest dolomite lime. Zoysia struggles in low pH soils. Especially if the calcium and magnesium levels are low. My test to see if the lawn is going to be calcium/magnesium responsive is a Peters soluble product 15-5-15. N is from calcium nitrate and magnesium nitrate. Most of my soils are too alkaline. But, if I am inland and not in an area based on serpentine, calcium and magnesium are limiting. 2 lb per 1000 turns grass almost blue green, if that is its problem. If calcium and magnesium are not limiting, not much happens.

The form used is new on me. I get actual concentrations of calcium and magnesium, not just their percentages of base saturation.

Riggle is right on the potassium. That should be spoon fed throughout the growing season rather than dumped on in one application. Soil tests are normally written with the assumption that the area will be tilled up. That is why I pay attention to the form and solubility of what is being applied. Insoluble granules do not do me much good on fairway height turf.
__________________
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
  #6  
Old 09-20-2014, 07:45 AM
grassmasterswilson grassmasterswilson is online now
LawnSite Gold Member
 
Join Date: Mar 2007
Location: nc
Posts: 3,281
Thanks doc

They recommended 2 lbs of n and 5 lbs k per year. I'm just not good at deciphering the test.

Given the fact the lawn is very bad and full of thin spots it seems to need a lot of everything. I fertilized on my program this year so it got plenty of n. Just not very responsive.
__________________
GrassMasters, LLC
Wilson, NC
www.grassmasterswilson.com
Reply With Quote
  #7  
Old 09-20-2014, 10:47 AM
ETM's Avatar
ETM ETM is online now
LawnSite Member
 
Join Date: Jul 2007
Location: social circle,GA
Posts: 226
You are proly looking at a little winter kill also. All our zoysia yards had winter kill and have finally started looking good again just in time to go dormant lol.
Posted via Mobile Device
Reply With Quote
  #8  
Old 09-20-2014, 06:34 PM
greendoctor greendoctor is offline
LawnSite Fanatic
 
Join Date: Mar 2008
Location: Honolulu, Hawaii
Posts: 7,383
Quote:
Originally Posted by grassmasterswilson View Post
Thanks doc

They recommended 2 lbs of n and 5 lbs k per year. I'm just not good at deciphering the test.

Given the fact the lawn is very bad and full of thin spots it seems to need a lot of everything. I fertilized on my program this year so it got plenty of n. Just not very responsive.
N does very little to a lawn growing on soil that is too acid. That was brought home to me on a bermuda lawn growing on pH 5 red clay. New homeowners. Previous owner kept the lawn green by constantly laying down a barrage of every fertilizer normally applied to a lawn. I am going to guess about 2 lb N a month every month. I get the pH up to around 6 and add magnesium with a liquid application of hydrated lime+magnesium sulfate. Lawn got green and stayed green from that. Raising the pH enabled the grass to utilize what was previously applied.

A lawn that is thin and seems to need a lot of attention to stay green makes me start to look at pH. There is a certain look to zoysia growing on soil that is too acid compared to soil that is too alkaline. Zoysia growing on alkaline soil is pale, but still relatively thick. On acid soil, it is stunted and thinned out. Might not be true in all cases, but soil testing has confirmed my suspicions in each case.
__________________
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
  #9  
Old 09-20-2014, 06:49 PM
PicturePerfectLawns PicturePerfectLawns is online now
LawnSite Bronze Member
 
Join Date: Feb 2014
Location: Lone Star State
Posts: 1,288
Low soil pH decreases Mg availability, so that probably explains where your Magnesium deficiency is coming from. It with the pH that low I suspect it's going to take constant work to get that thing up. Let Green Doctor recommend you some good applications to raise that pH up. My PH is on 8+ and the Zoysia is doing WONDERFUL.
__________________
"It takes true dedication."

(I took the Praying For Rain out of my signature, due to my hypothesis that it has been a jinx on Central Texas.) Now here comes the rain.
Reply With Quote
  #10  
Old 09-20-2014, 07:02 PM
greendoctor greendoctor is offline
LawnSite Fanatic
 
Join Date: Mar 2008
Location: Honolulu, Hawaii
Posts: 7,383
As long as levels of nutrients are adequate, high soil pH is not a real problem for zoysia. It is the other way around that becomes an issue. There are certain areas on the island where I do not recommend usage of zoysia because of low pH. I prefer centipede in those situations due to its tolerance of acid soil. Cannot imagine the average "landscaper" or yard guy knowing enough to apply lime rather than saturating the area with fertilizer. My clue is what is growing well and looking good in a lawn not professionally maintained. In some neighborhoods, it is centipede grass.
__________________
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
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 10:30 PM.

Page generated in 0.08177 seconds with 10 queries