Message Board - Cricket: sulphate of iron
18 Mar 2010 by RAM 1
Guys, been supplied 2 bags of sulphate iron as my supplier seems to have run out of all liquid forms. I know this is mixable in water(pref warm) and will be used in a 16lt knapsack, but cant get info on amount of prod needed per 16lt. All the bag tells me is scatter around your lime hating plants and hoe in well, and can also be dissolved in water.
Can't seem to find anything that tells me what I need to know.
Any help much appreciated
19 Mar 2010 by Ken Barber
Hi, I will try to keep this simple, so both of us don't get confused!
You should know how much your knapsack applies per ha or 100m2, and provided you maintain the same walking speed it will not change.
I apply sulphate of iron somewhere between 8kg/ha and 12kg/ha. So to simplify the calculation I will work to 10kg/ha.
My vehicle sprayer is calibrated to apply 600 lt/ha. This equates to .06 lt/m2 or 6 lt/100 m2.
10kg/ha (10,000gms/ha) / (divided) by ha (10,0000m2)
= 1gm / m2 or 100gms / 100m2.
I assume you have calibrated your knapsack sprayer? Provided your walking speed remains the same and you use the same nozzle and pressure it would not be difficult to work out your fe application rate.
Or when you have variability in application rate i.e. in my case between 8kg/ha and 12kg/ha, you can assume you won't be far off applying 250gms of fe in 15 lt of water.
I will no doubt get shot down by someone..... maths was my worse subject at school and I left school over 40 years ago.
Anyway, I hope this helps?
KB
The true meaning of life is to plant trees, under who’s shade you do not expect to sit.
19 Mar 2010 by RAM 1
Hi Ken, thanks for the info. Yes I do calibrate my knapsack, so I know my bit of the jigsaw, what I couldn't find any application rate info for tthe prod, telesales person not a hope, company rep AWOL. I knew someone would give me an idea on here, again many thanks .
19 Mar 2010 by Chris Thornton
Hi
I have used diluted iron and would like to add that I diluted it ,initially, in hot water and then strained the liquid into the knapsack. You will be surprised how much un-dilutable stuff there is.
Chris
"He not busy being born is busy dying"
19 Mar 2010 by Ken Barber
Hi Chris, The quality of iron sulphate varies from company to company. Fortunately, I have sourced a good one that disolves fine even in cold water. At the rate I am speaking of, there should not be any sediment left.
however, If you want to prevent any sediment from entering your sprayer, mix it in a bucket, let it settle out for a minute then pour slowly into your tank. If there is any settlement left at the bottom of the bucket part fill it again and again slowly pour it into the tank once it has settled out.
I use a hose pipe with a sprinkler attachment, turned to a single jet stream, this has quite a strong pressure and excellent for dissolving such products.
KB
The true meaning of life is to plant trees, under who’s shade you do not expect to sit.
19 Mar 2010 by jontaylor
Or turn the equation around.
For moss I apply 4kg across the whole square - 12 tracks wide plus 2m behind stump line and approx 2m either side.
This is the strongest I would recommend to avoid blackening (which I got when I went up to 5kg). For moss control don't go too much lower.
I typically apply this in three or four pedestrian passes, in order to maximise uniformity of cover.
The ciderman rolls
19 Mar 2010 by Ken Barber Last edited 19 Mar 2010
Hi Jon,
Being a greenkeeper, I wouldn't know, so what area would that equate to ..... 12 tracks plus an extra 2m width around the outside of the square?
KB
The true meaning of life is to plant trees, under who’s shade you do not expect to sit.
19 Mar 2010 by jontaylor
Ken,
Come on Ken - the track is a traditional English unit of measure - I'm surprised at you!!! Also known at the chain isn't it?
1 track is 22 yards by 10 feet, so 12 tracks is 22 x 40 yards = 880 sq yards.
But allowing my mixed generation measurements (I think in imperial and metric at the same time) I'm spraying about 26 x 44 = 1144 sq yards, so a little under a quarter of an acre and I'll let you convert to hectares.
The wine in France was good last night - but the gold top batch of my own cider tonight was better - tipsy and proud to be back in Lincs.
The ciderman rolls
20 Mar 2010 by Ken Barber
Sorry Jon.... to my recollection, a track is something you walk or ride along and a chain you pull or wear around your neck!
1144 sq yd = 956.4 m2
So my rate quoted above give or take 45 gms = 1kg over the area you speak of.
Your 4kg equates to 41.23 kg/ha! And you claim your grass doesn't turn black at this rate? How much wine did you drink? And I would lay off the cider? Maybe you have both lbs. and kgs. on your scales and you are reading lbs. instead of kgs.?
lol
KB
The true meaning of life is to plant trees, under who’s shade you do not expect to sit.
20 Mar 2010 by jontaylor
Ken,
Come and see the grass if you don't believe me.
My applicatioin rate was calcuilated from the iron content of lawn sand and the recommended application rate of same.
4 bottles of gold top cider from the garage tonight, watching England lose to the ref.
The ciderman rolls
21 Mar 2010 by Ken Barber
Was he the worse ref ever! He ruined an excellent game!
KB
The true meaning of life is to plant trees, under who’s shade you do not expect to sit.
23 Mar 2010 by jerry spencer
Couple of quick things make sure its the heptahydrate form adn it actually dissolves better in cold water than hot. I know its hard to believe but its true!!
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