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Ohio

I didnt want to hijack the post below so I thought Id ask ya here Larry.lol

By looking at my levels below,, how much Manganese Sulfate would you add to your water if you was doing a spring prep?,,(roughly 3000 sq ft).The reason I ask is because my Manganese readings are low ever spring, not by alot, but more on the line of Below average.
I can also tell my Mag starts to get low mid season because the tips on my mature leaves on a few of my plants turn a yellowish white, not every leaf on the plant turns this color, only about 10% to 15% of the leaves do this.

But here is my Manganese levels in October

Mg % 16.9

Manganese Mn ppm 5

Magnesium Mg ppm 445

3/31/2010 6:41:09 PM

Mill Bay, British Columbia

Great question Brooks...my manganese is at 10 ppm and I was using an Agro-K foliar suppliment till I ran out.

3/31/2010 8:03:54 PM

Ctpumpkin@optonline.net

The soil will lock MN readily.

3/31/2010 8:53:01 PM

Northern Cambria, Pa.

I put 1 or 2 tablespoons into a gallon of water and then pour about a pint of the solution into each tank full of water. The tank holds 500 gallons so that is maybe 1/2 teaspoon per 500 gal. As Tremor stated, Mn locks up in the soil quickly so you have to keep adding it in with you water and/or foliar spray.

4/1/2010 9:17:57 AM

Western PA

Larry,
How many ppm manganese does it show on your soil test?

How often do you apply the manganese supplement?

Where do you get your manganese sulfate from?

Thanks a lot!

Erik

4/1/2010 6:03:39 PM

Ohio

thanks Larry!
I didnt know that MN will lock up like that so easy, and this probably explains why my mid season tests are so low and why the edges of my leaves turn that color.

Before mid season Im going to try to be right on top of the Manganese levels.

4/1/2010 8:29:33 PM

Northern Cambria, Pa.

Erik our soil usually is in the 20 to 50 ppm range. We add it to the water maybe once or twice a week, less if the leaves are nice and green. It does not take much.
http://www.hydro-gardens.com/fertcomp.htm

4/1/2010 9:01:06 PM

Ohio

Larry, what about the Manganese Chelate that is on the page you posted, you ever use that, and what do you think about the Chelate kind ?

4/4/2010 5:20:27 AM

Northern Cambria, Pa.

I think that either would work. I have never tried the chelate. Not sure which is best.

4/4/2010 10:14:00 AM

Willamette Valley, Oregon

You may want to stay away from the Mn chelate.

See the note at the very bottom of this page:
http://www.spectrumanalytic.com/support/library/ff/Mn_Basics.htm

4/4/2010 11:20:00 AM