The Tropical Fruit Forum
Citrus => Cold Hardy Citrus => Topic started by: Samodelkin on February 20, 2018, 04:03:21 AM
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Growing conditions involve freezing -5 -7 in the greenhouse.
There was a question of finding a suitable citrus rootstock that tolerates cold, loam, lime
Poncirus very good cold-resistant rootstock, but it chlorotic in lime soil.
Sweet orange can not stand the cold and heavy clay soil
Citrumelo the Dunstan first year gave good gains, but then root came into lime and autumn growth was chlorotic
Here is a tree-based garden citrumelo the Dunstan
The largest increase in Mandarin karaji, after a week of night frosts -8 in January 2017 no damage
(http://f23.ifotki.info/org/acbcb4c83a30e1c80d5390a6d00689fcbcbf14301777445.jpg) (http://i-fotki.info/)
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Rootstocks rated good in high pH soils, and rated good for freezes Shekwasha mandarin, Sour Orange, Rated Intermediate for high pH and good for freezes Cleopatra Mandarin, Sun chu sha mandarin.
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I have these citrus hybrids:
FORNER ALCAIDEŽ 5
TRIFEOLA
Glauca x Shekwasha
C. taiwanica OE Tan. & Y. Shimado
"AGRIONJA" - (C. aurantium x C. paradisi)
Citradia "Eisenhut 139"
perhaps, there is experience use their as a rootstock?
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I have no experience but FA5 is said to be quite lime-tolerant. It certainly is cold-tolerant.
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FA5 testing in their conditions. The autumn increase was a bit chlorotic.
(http://f23.ifotki.info/org/eb0d8971b695240c4354a91ae6558ad9bcbf14302070033.jpg) (http://i-fotki.info/)
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What do you think if you vaccinate citrus on trifoliate additional root - for example Rangpur-it will help with the problem of chlorosis? And how weak is the frost resistance?