Sour Orange is the main rootstock here in Arizona, since it does so well in our soils. I'm not aware of any real alternatives that do well in our soil. I've got about 30 seedlings of Sour Orange growing and after I graft these trees, the varieties I like best will be planted in ground at my home. My only concern is the CTV issue Sour Orange is known to have. I know aphids spread the disease and I have aphids every year. I wonder if anyone knows how common CTV is on SO in my growing area? Is there anything I can do to limit the risk?

No ideas?

http://www.azda.gov/PSD/CitrusTristezaVirus.htm

Millet (710-)

We haven't had any real tristeza problems due to the issues of our low humidity and high heat, the brown citrus aphid doesn't live here very well so we've not had the problem as other States do, that's why we still use Sevilles as much as we do. Not to mention our soils....
Last season I grew a few hundred C-22 I got from Texas A&M as a replacement for Seville, I think they'll so well in our State but only time will tell.

OK, so CTV has been found here, but currently it's not a risk because the aphid that spreads doesn't survive here.

I don't know what "bitters" is, that's a name I'm unfamiliar with. This is a Citrange Hybrid that Texas A&M bread. Most Citrange that the box stores sell comes from Alan @ CM or Helen @ willits & newcome, they grow on Citrange and citrange (c-32 & c-35) will not preform well in our State. Thats the reason so many people are having problems with their trees here. C-22 on the other hand is suppose to preform well in calcareous soils. I'm at the understanding that many commercial growers in Texas are replacing their groves with trees on C-22.

It has to be this.... http://www.citrusvariety.ucr.edu/citrus/bittersC22.html

I'm curious if it's salt tolerant and high PH tolerant. Do Texas soils have high PH and salts as well?

It handles those soils Mark.. Texas has their own set of "Issues" to deal with when it comes to soils..
Thanks for the tips on the suckering.. I hate suckering stock!

I'm finding the salt in my water alone to be an issue for salt sensitive rootstock. That's without fertilizer or the salts in the ground.

Two of the commonly used root stocks are rated as good for soil salinity, and 4 or 5 have a rating of intermediate: - Millet (706-)

Sour Orange = G
Cleopatra Mandarin = G

To add it does awesome with high ph soils.
I was told the variety of this hybrid I think large trifoliate and Sunki mandarin I think. If you like I posted it somewhere here you just need to backtrack my posts to last year.