grafting type of this jackfruit plant?

[mahen.jnk]

Pic of jackfruit plant purchased from an online nursery.

What type of grafting it is?

I guess thicker darker one on the left side is root stock and the right side one scion. Is that correct?

Why are both in ground?

Do we need to cut off scion above ground but below the graft union after sometime?

Thanks
mj

[Chandramohan]

This is an approach graft. Remove the shoots on the rootstock both below and above the graft union. The potion of the scion below the graft can be cut away.You are right, the thicker, darker one is the rootstock and the right side, the scion.

[00christian00]

Do we need to cut off scion above ground but below the graft union after sometime?

Like Chandramohan said, approach graft.
I would like to add, don't cut the scion below the graft, there is no need. Keep it as additional rootstock, it will give the plant a more established root system given by the combination of the two.
Just cut above the graft the rooststock if you don't wish to keep that variety.

[mahen.jnk]

Thank you guys. I will cut off the growth from root stock.
@chandramohan, I got it online from a nursery in kerala. They call it Vietnam super early that fruits in one year. Any idea about this variety.

[Chandramohan]

No idea.