[Arid_gardener] Question from Home-Hort WWW page

[Dick]

Standard practice, Adam, that I have used somewhat religeously since 1969 in 
the Salt River Basin is to irrigate and fertilize with 1/3 third of the 
annual fertilizer requirements in March, June and September in a shallow, 
wide trench whose center is approxomately the drip line. In my 30 plus years 
old trees, there has never been a drop of water added inside that trench, 
nearer the main trunk, unless it rained. Water should pennetrate and carry 
the fertilizer to a depth of three feet checked with a soil probe in several 
places around the drip line. Water should not be added again until the soil 
in the trench is quite dry at least three inches deep regardless of how long 
it has been since the last irrigation.

I have never used anything except Ammonium Sulfate, 21-0-0, applied as 
prescribed on the bag based upon the tree trunk diameter.

I apply the above to five varieties of 40 year old healthy citrus still 
procucing well in my Phoenix yard.

Your local nurseryman can, I'm quite sure, advise you well and soundly on 
citrus care. It is critical in the Salt River Basin.

Dick Gross, Master Gardener Volunteer
U of A Maricopa County
Cooperative Extension



----- Original Message ----- 
From: <aerenstein at gmail.com>
To: <arid_gardener at Ag.arizona.edu>
Sent: Monday, February 11, 2008 7:55 PM
Subject: [Arid_gardener] Question from Home-Hort WWW page


> Adam
> 85050
> aerenstein at gmail.com
>
> I have a orange treee and the leaves are turning yellow at the tips. What 
> can I do?
>
> Also, the lemon tree sees to be turning a yellow green. Can I fertilize 
> this time of year?
>
>
> _______________________________________________
> Arid_gardener mailing list
> Arid_gardener at CALS.arizona.edu
> http://CALS.arizona.edu/mailman2/listinfo/arid_gardener
> All contents copyright 2007. Arizona Board of Regents/University of 
> Arizona
>