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Old April 1, 2018   #1
Join Date: Feb 2018
Location: North Dakota
Posts: 20
Default Determinate rootstock/indeterminate scion?


My test grafts are doing well, so now I am ready to do another batch. Soil disease isn't an issue for me (as of yet, anyway). I am experimenting with grafting in hopes of improving the production of tomato varieties whose fruit, in my garden, has been too late and too little. In hopes of killing those two birds with one rootstock, I will be grafting some Brandyboys and Cherokee Carbons to PolBig rootstock (PolBig is a 60-day determinate with good production and disease resistance).

I suppose I will find out for myself, if I stick with it long enough, but I am curious whether the use of an early-maturing determinate rootstock has helped anyone else get a late-season tomato to bear earlier and, if so, if the fruit quality held up. My web-searches in this regard turned up one hit, a 2013 post by b54red, which indicated that the resultant plants were not as tall as they typically would have been (which, by itself, seemed to hold some promise of offering "extra earliness").

Any experience here with using the rootstock of an early determinate to hasten the fruit development of a late-season indeterminate?
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Old April 8, 2018   #2
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Join Date: May 2016
Location: Williamsburg Zone 7b
Posts: 763


Great question so I'm giving you a bump! I've wondered what mixing dwarf, determinate, indeterminate rootstock/scions would do too.

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Old April 9, 2018   #3
Join Date: Feb 2018
Location: North Dakota
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If I learn anything, I'll post. Yesterday, I grafted some Brandy Boy and Cherokee Carbon scions to Polbig rootstock. Next week or so, I will do some more.
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Old April 9, 2018   #4
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Join Date: Mar 2017
Location: Central Texas - Zone 8A
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I know with trees they graft the scions onto "dwarf" root stock to create the dwarf varieties of the trees that are much smaller than the original. It may be the same with toms
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Old April 11, 2018   #5
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Join Date: Dec 2010
Location: Pewaukee, Wisconsin
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I'm going to follow this.
~ Patti ~
AKA - Hooper
Zone 5
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Old April 11, 2018   #6
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Join Date: Feb 2015
Location: NC - zone 8a - heat zone 7
Posts: 4,736

To my understanding root stock affects plant size and vigur. That is why some gardeners use vigurous root stocks to improve plant size and thus production. So by choosing determinant as root stock one might expect the reverse.

Happy Gardening !
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Old April 13, 2018   #7
Harry Cabluck
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Join Date: Jan 2018
Location: Austin, Texas
Posts: 131
Default compare sizes re graft

You may have seen this photo on another post. Shows two of Michael Lofthouse's "Ot' Jagodka." The one on the right is grafted to "Supernatural" rootstock. Regard how much the grafting sets the plant back. The Lofthouse root system seems as vigorous as the hardy rootstock. But we'll know more as we compare them in the garden later in the season.
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