Citrus Growers Forum

Mark_T · Posted: Thu 14 Apr, 2011 1:58 am

I need a quick a opinion on these rootstocks versus each other, for general propagation purposes. They will all be used for container growing, at least initially. Keep in mind, I need broad scion compatibility. I'm leaning towards Carrizo, but I believe C-35 creates a smaller tree. I will be getting a substantial amount of either variety so I need to make a solid decision. thanks!!

Millet · Posted: Thu 14 Apr, 2011 11:56 am

Carrizo produces a large sized tree with high yields. C-35 produces a intermediate sized tree with intermediate yields. Both C-35 and Carrizo do poorly in high pH soils, and in soils with high salinity. For most of the other categories that root stocks are generally rated on, they both do pretty good. - Millet (641-)

Mark_T · Posted: Thu 14 Apr, 2011 5:00 pm

Millet wrote:

Carrizo produces a large sized tree with high yields. C-35 produces a intermediate sized tree with intermediate yields. Both C-35 and Carrizo do poorly in high pH soils, and in soils with high salinity. For most of the other categories that root stocks are generally rated on, they both do pretty good. - Millet (641-)

Thanks Millet, do you have a recommendation? I have ruled out Flying Dragon and sour orange based on availability and time frame, at least from the sources I have contacted. I am willing to consider a different variety as well.

Millet · Posted: Thu 14 Apr, 2011 5:06 pm

Of those two I would use Carrizo. All root stocks when grown in containers are somewhat dwarfing, due to the restriction on the size of the root system. - Millet (640-)

turtleman · Posted: Thu 14 Apr, 2011 11:20 pm

interesting.
I have hundreds of liners of both FD and sours

Chris · Posted: Fri 15 Apr, 2011 2:07 am

vote for c35. The yields can be very high based on my own 5 mandarins and a little online research.

http://edis.ifas.ufl.edu/hs196

Carrizo is good too though. I have two trees but they don't seem to tolerate my heavy soils as well.

Mark_T · Posted: Fri 15 Apr, 2011 5:48 am

turtleman wrote:

interesting.
I have hundreds of liners of both FD and sours

Please send me details via PM.

Chris wrote:

vote for c35. The yields can be very high based on my own 5 mandarins and a little online research.

http://edis.ifas.ufl.edu/hs196

Carrizo is good too though. I have two trees but they don't seem to tolerate my heavy soils as well.

I figure both are a safe bet, these are the two most common rootstocks used at UCR and I plan on keeping them in containers.

Millet · Posted: Fri 15 Apr, 2011 12:10 pm

Chris, if you are posting about clay soils in your area, Carrizo does poorly in clay soils, but then so does C-35. - Millet (640-)

Chris · Posted: Fri 15 Apr, 2011 11:06 pm

Most of the nurseries here are using c-35 on "standard" size trees. They have better resistance to "wet feet" than Carrizo/Troyer according to Brokaw and Durling. I would go with what the commercial growers are using, but that's just my personal opinion.

You can't go wrong with either as I mentioned before so good luck and happy growing.

hoosierquilt · Posted: Thu 11 Oct, 2012 8:56 pm

What Chris said. Come to my yard for a personal view of why Carrizo is quickly falling out of favor here in San Diego county, where we have known issues with phytophthora. Willit & Newcomb and Citrus Tree Source are also favoring C35 and C32 (and Volkameriana) over Carizzo/Troyer. I have now lost 6 trees total until I finally was able to figure this out. Ugh.

_________________
Patty S.

Chris · Posted: Sun 14 Oct, 2012 9:10 pm

Patty that's a bummer! I usually just drive to Durlings Nursery and pick out my trees myself. They raised their prices recently but the quality and selection can't be beat. You are a lot closer than me too.

citrange · Posted: Mon 15 Oct, 2012 4:18 pm

Quote:

They will all be used for container growing, at least initially

I have found that there is virtually no published rootstock information very relevant to citrus grown in containers. If the plants are in any case protected from frost, then you don't need hardy rootstocks. If you don't use soil from your own back-yard, then the normal rootstock selection for your local conditions doesn't apply. The commercial requirement for the very highest yield also doesn't really need to be considered. As Millet says, plant size in containers depends greatly on the size of the container. So, if you provide the right pH, the right drainage and the right temperatures then any citrus rootstock will work in a container.
For my particular conditions in the UK, with containers left outside during cool, damp summers, I have to think about phytopthera resistance. I also need a rootstock that will grow fast enough to produce a grafting size rootstock as quickly as possible. Poncirus takes too long. Any citrange or any citrumelo works best for me.