22-04-2014, 10:24 PM
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Registered User
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First recorded activity by GardenBanter: Apr 2014
Location: Northern Ireland
Posts: 8
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Quote:
Originally Posted by mike[_9_]
On 4/22/2014 6:21 AM, Moe DeLoughan wrote:
On 4/21/2014 12:29 PM, The instructor wrote:
In the professional turf. Industry iron is applied every 4- 6 weeks
how often do you think a household lawn needs it?
It depends upon your soil. Iron tends to be fairly plentiful in most
soils, but its availability to plants is dependent mainly upon soil pH,
and to a lesser degree on the soil temperature and degree of root
development. Before adding a soil amendment, it is always recommended to
have a soil sample tested to determine what, if anything, you need to add.
Soils with a higher pH tend to tie up more iron in the soil, so
supplementing with iron can be useful. If your soil isn't in the
alkaline range, adding iron may make little to no difference to the
lawn. In the long run, you'd see better results by lowering the soil pH.
Adding an iron supplement to an higher-pH soil through a top-dressing
treatment, such as an iron-supplemented fertilizer, works only for a few
weeks because the added iron will quickly be tied up in the soil. Thus,
if soil conditions require it, it may need to be regularly applied
through the growing season. However, as the soil warms and bacterial
activity and root growth increases, the amount of iron uptake in plants
increases. For that reason, a home owner with an alkaline soil may be
satisfied with limiting iron supplementation to the spring season.
Tl;dr: don't assume you need to add iron until you have had your soil
tested and have determined its pH.
I had the same question, but for a different reason.
I have a lot of moss.
Iron gets rid of it.
But I expect too much harms the grass???
How much is too much?
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Yeah too much will weaken and thin out the grass. Every 4-6 weeks was for high intens sports turf on a sandy rootzone which is prone to losing nutrients. While I agree with the answer given, it is always a good starting point to know ur soil PH, I don't know of many people who would do it to determine iron use, most people like yourself only apply it to. control Moss. If you are applying Iron Sulphate then 15g per meter squared is adequare to control a minor Miss problem. If you have lots of Mossi then you can apply iron to weaken it but it will not get rid of it. Physical removal through scarifying will have to be done..
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