On Dec 4, 9:41*am, Wilson wrote:

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Wilson 44.69, -67.3

44.69, -67.3 : Long/Lat? Acadia region of Maine? If so, have you
considered seawater infiltration? This link is bit wordy but it may
give some hydrology insight: http://pubs.usgs.gov/circ/2003/circ1...ading156057192
as well as: http://www.maine.gov/doc/nrimc/mgs/e...k/section4.htm
..

From a hydrological or geological aspect, its highly unlikely any
watering in your life time is going to reach 200+ ft depth. So it is
also highly unlikely that surface contaminants are involved in your
water from either you or your neighbors If you ARE in Maine, pretty
much granite thus iron, isn't it? Don't see much limestone sources
in your region as a possible. Regardless, it would take a huge amount
of minerals (organic or inorganic) to change a pH factor by 1.7.

So with your stated practices and my region guess, it doesn't sound
like your soil is the causative here and 8.7 is in pH range of
seawater. So you may have or had zones of seawater infiltration in
your aquifer, ergo, a myriad of elements would be present that would
cause your plant's chlorosis. Consider an analysis beyond pH testing
as proper protocol to specifically identify what is going on and take
immediate corrective action. Otherwise, you risk test trials of
every Garden Guru's " have ya tried..." theory. Those are usually
based on highly biased folk lore and/or personal bent which usually
just eat up time and money.

Recommend as a start you give your County AG Extension office a call
as well as have your water analyzed for more than just pH and test
your present soil conditions to see where they stand. Think about it a
minute... with today's testing procedures, you would mostly likely
have already had a scientific starting point and a course of action
plan to test off of.

Good luck Wilson and please update what and how you do.