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21
Citrus General Discussion / Re: Thread for Citrus Breeders
« Last post by mrtexas on October 21, 2017, 09:17:44 PM »
Seville sour orange in my opinion is an excellent root stock. It is rated good for high pH, clay soil, freezes, extra good for wet soils and generally produces fairly high yields with fruit high in juices.  On the other hand I also like Flying Dragon as a root stock (kind of both sides of the spectrum).

Sour orange is much more likely to freeze in the ground than the trifoliates. It never really goes dormant.
It is much more vigorous than trifoliate or flying dragon. The only tree I had freeze in last winter's two
nights of 19F for a few hours was on sour orange. It killed the trunk back to around 6 inches. The caliper was
around 1 1/4 inches. I bark grafted the rootstock and now after less than 6 months growing the scion has
nearly overtaken the stump.

Lately however I am preferring the more vigorous rootstocks like swingle (which I can get seeds for.) With the uncertainty of greening no sense
going for a slow growing rootstock like trifoliate or flying dragon.
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Citrus General Discussion / Re: Thread for Citrus Breeders
« Last post by mrtexas on October 21, 2017, 09:11:59 PM »
Trifoliate orange ... 1.03-1.26 ... 13-73

Out of thousands and thousands of trifoliate and flying dragon seedlings I have grown out
only a handful were hybrids. I had 1 or 2 "dragon lime" like hybrids and 1 tiny dragon hybrid.
I'd put the % true to seed at 99+%.

Of  the trees I grew to maturity in the ground on flying dragon rootstock only one out of 50 were obviously
hybrid by their rapid growth rate. My page was one at my old house that grew vigorously.
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Citrus General Discussion / Re: Thread for Citrus Breeders
« Last post by mrtexas on October 21, 2017, 09:05:32 PM »
Never had one out of thousands killed by fungus. Cover the whole bud or not?
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Tropical Fruit Discussion / Re: California Big Leaf Papaya
« Last post by AnnonaMangoLord45 on October 21, 2017, 08:40:16 PM »
Beautiful, is that one resistant to PSRV? does it fruit within first year? Could i buy some cuttings next year JF, Thanks, Matt
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Tropical Fruit Discussion / California Giant Leaf Papaya
« Last post by JF on October 21, 2017, 07:56:02 PM »



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Tropical Fruit Discussion / Re: lisa or gefner atemoya ?
« Last post by skhan on October 21, 2017, 07:38:10 PM »
Looks like a gefner.
Same exact thing happen to me. Bought a 15g Lisa it was really a gefner.
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Another multitasker is FHIA 03 (sweet heart)
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Citrus General Discussion / Re: "100% Pure" Orange Juice Is Not Pure Test Shows.
« Last post by BajaJohn on October 21, 2017, 07:35:01 PM »
I guess that is a part of the motivation for growing our own.
I'm not a fan of glyphosate, or Monsanto but there seems an element of alternative truth in the article.
If glyphosate is the only impurity, worst case scenario is that the OJ is 99.9999974%  pure.
Europe has the more conservative Allowable Daily Intake of glyphosate at 0.3 mg per day. The EPA permits more than 5 times that dose. Three pounds of oranges would have about 40 micrograms of glyphospate at the higher contamination levels. That is less than one tenth of the ADI. A large glass (2 cups) of OJ would have about a third of that - 12 mg max. It is hard to figure why the article baulks at those kinds of doses per year.
I think there is a real cause to be concerned about glyphospate based more on its pervasiveness, growing use in many crops and potential contamination of water supplies. Loads of food crops are treated with glyphosate and there is a growing trend to use it in crops such as wheat simply to make harvesting easier. Individual foods may be within acceptable contamination levels but contamination of multiple food sources may take daily intake above acceptable level. There is also concern that current acceptable daily intake levels are way too high, based on research since those levels were set.
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Citrus General Discussion / Re: Thread for Citrus Breeders
« Last post by brettay on October 21, 2017, 07:33:16 PM »
Seville sour orange in my opinion is an excellent root stock. It is rated good for high pH, clay soil, freezes, extra good for wet soils and generally produces fairly high yields with fruit high in juices.  On the other hand I also like Flying Dragon as a root stock (kind of both sides of the spectrum).

I agree.  I think the sour orange will be great for my outdoor/in-ground citrus.  Now, if I could only graft successfully.  I have been doing a bunch of t-buds, however after 1-2 weeks most of the buds get killed by fungus.  Frustrating!

-Brett
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