Re: yellowing of leaves between veins

  Thanks Bill, this sounds very aplicable, as my soil last
year had low pH, and the horse manure was not completely
composted. I've been going through a series of knee
surgeries, and my ground prep has always been one step
behind as a result. I'd gotten my soil test in mid June,
way too late to make real corrections, and found my soil
poor in nutrients as well. 
   I feel I may have finally caught up this year. I limed
the soil last fall, and the soil pH and fert are all up
from last year's soil test, still low in some areas but
much better none the less. I've reamended the soil this
spring to bump up the fert levels that still hadn't come up
all the way, also using dolamite to make use of the added
magnesium as well as the buffering of pH. I'll also
broadcast a box of ironite I got free at the Canby
weighoff. I finally feel like I'm ahead of the game,
instead of just applying bandaids to a bad situation.
  Here in Southern Oregon soils tend to be poor in
nutrition, we have two seasons here, the mild wet winters
tend to wash any solubles away and lower pH, followed by
several months of no rain. My soil is also sandy-gravelly,
so lets the leaching happen faster. Cover crops have been a
great help, and I think the early spring fert applications
are working better than putting it on in the fall like most
of the rest of the country likely does. We've had a dry
winter too, which may have left more of the good stuff in
the dirt, I just hope we have enough water to get through
to late september when the rain starts again.
  We have no snow, but got a good inch of rain yesterday,
followed by fog today. April will be the last month of
rain, and we won't see anything precipitation untill late
September or early October. I've got a better battle plan
to deal with the heat and low humidity too, but won't
elaborate, I've gone on long enough.

Matt

  
--- "BILL J. SADOWSKI" <BSADOWSKI@CompuServe.COM> wrote:
> I had this problem a few years ago and found this to be
> attributed to an
> iron deficiency (chlorosis).  Every year I have been
> using a chelated iron,
> mineral supplement and I have increased my nitrogen.   I
> would add some
> Miracle Grow Lawn powder (high nitro) in my normal
> foliage spray and this
> really helped.   
> I believe what you see is an in-balance in soil moisture
> (too wet) which
> deprives the plant of some nutrients.   Also the manures
> tend to breakdown
> / decompose when this was observed........which causes
> the nitrogen along
> the top layer of soil to really be used.
> I know some genetics cause the vines to be streaked with
> yellow, but
> yellowing of the leaves should raise some concern.  If
> the veins are yellow
> that is a ph problem, to acidic.   Look up chlorosis on
> the internet and
> try to identify your leaves with pictures.   But the
> nitrogen additive is a
> treat for those leaves.
> Bill Sadowski, in Ohio with 4" of snow on the ground
> 
>
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=====
Good fishing!
Matt Moore
Visit my Severum Page at:
http://www.virtualseeds.com/matt.html



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