Grape grafting Question

[erha]

Hi, All...

Anyone please help me to figure what happened to my graft...

I just graft my grape about 3 weeks ago, 1 weeks after, i saw the roots are coming out. But, yesterday the roots are invisible. I took the soil out to see if the roots are still there, unfortunately, i saw nothing but the upper bark are looks like bloated with no root left.

What happened to the graft? What the cause and how the treatment are?
Are the stem still good to make new graft in the upper side of the old one or should i cut and trash those stems?

Regards.

[Deltawhiskey]

Hi Ethan,
I think instead of a graft, I think what you have is an air layer. If you are trying to propagate a grapevine the best way is by cutting. Take a 300mm length of last years wood about the thickness of a pencil cut just below a node. You can plant it in sterilised soil or even sharp sand. I have even grown vine cuttings in plain tap water and carefully planting them in soil after the the roots have grown. If you take cuttings in autumn and grow them inside you will be able to plant out in spring.

David

[erha]

Hi Ethan,
I think instead of a graft, I think what you have is an air layer. If you are trying to propagate a grapevine the best way is by cutting. Take a 300mm length of last years wood about the thickness of a pencil cut just below a node. You can plant it in sterilised soil or even sharp sand. I have even grown vine cuttings in plain tap water and carefully planting them in soil after the the roots have grown. If you take cuttings in autumn and grow them inside you will be able to plant out in spring.

David

Nice, that's Air Layering... I can't remember what's it called in English as i'm non native English btw. Thanks for the response...

I tried so many propagation by cutting, but, they are died when i move them into the pot. Mostly of their roots are got rotten by fungal, this technique is very tricky to me as i'm not fulltime gardener.

This is not my first air layering for the grape, the earlier sessions are successful, but, this time i have this case...

By the way, i live in equator, so i can grow or make propagation in almost anytime. But this time is rainy season here, really hard to control the fungals while i don't have greenhouse.

[roitelet]

If you are air layering I think that you need to leave it much longer before un wrapping it to give the roots a chance to get established.

[nickdub]

The main things with propagating grapes from cuttings are :- a) time in the ground, give them at least 2 years from taking the cuttings to digging them up and moving them - longer if they are not growing strongly b) having a reasonably well lit spot of soil, but one where the soil stays damp all year - I used to use a spot in my main garden and put a sheet of iron up to provide the shade on the south side of the cuttings, the north side of a shed can be OK too, provided the soil is not too compacted and stays damp.