Citrus > Citrus General Discussion

Yuzu on Macrophylla in Los Angeles County: tristeza?

(1/1)

greg_D:
I ordered a Yuzu tree from Four Winds Growers recently. I asked them what the rootstock is and they said Macrophylla. I'm in Los Angeles County, where tristeza is endemic. Given Macrophylla's susceptibility to tristeza, should I be worried about the tree getting infected?

Millet:
In California, Macrophylla is used as a rootstock primarily only on lemons.   As you mentioned in your post, Macrophylla is quite susceptible to California Tristeza isolates.  Many times infected trees become stunted rather then quick decline.

greg_D:

--- Quote from: Millet on September 04, 2023, 01:08:56 PM ---In California, Macrophylla used as a rootstock primarily only on lemons.   As you mentioned in your post, Macrophylla is quite susceptible to California Tristeza isolates.  Many times infected trees become stunted rather then quick decline.

--- End quote ---

Thank you. Living in Los Angeles County, how concerned should I be about this? Is infection inevitable, like HLB in Florida? Or is it more something that could happen but probably won't?

Based on this: http://s3-us-west-2.amazonaws.com/ucldc-nuxeo-ref-media/41c036e3-dcd9-4944-9979-318d96ce8d13 (CITRUS ROOTSTOCKS FROM THE PAPEDA GROUP by
W. P. Bitters, C, D. McCarty and D, A. Cole*) it seems like yuzu is itself a good rootstock. I'm considering air layering it above the graft union and just growing it on its own roots. Or maybe inarching with trifoliate.

Oolie:
You got the right idea, inarch trifolate, no sense in using tristeza sensitive rootstocks in Socal.

Navigation

[0] Message Index