[NAFEX] Anchorage of M7 vs M111 rootstock

Richard J.Ossolinski ossoeo at verizon.net
Sun Dec 7 11:28:58 EST 2008


Alan (and others who might have had experience with M111),

Though I can't reference any off the top of my head, some of the 
literature regarding 111 mentions its (negative)
effect on fruit size.  Have any of you experienced this first hand?

Thanks,
Richard
Gouldsboro, ME Zone 5

On Dec 7, 2008, at 9:35 AM, Alan Haigh wrote:

> After I wrote of the better anchorage of 111 over 7 Lucky wrote, "My 
> experience has been just the opposite - I have a good clay soil with 
> high water table; trees on M7 have anchored well and show no sign of 
> leaning or blowing over, but easily 50% of my apples on M111 leaned at 
> 45 degrees - or more - as they gained size, necessitating pulling them 
> back into an upright position and propping up with sections of Osage 
> Orange trunk."
>  
> This surprised me not only because it contradicts my own experience 
> but also my recollections of what I've read over the years of these 2 
> root stocks.  However, my experience does not include a lot of growing 
> in clay soils, although I briefly had a nursery in a commercial 
> orchard with very clay soil and many of the trees grown their by the 
> owner (not my trees) on semi-dwarf rootstock required staking.  I'm 
> going to contact the grower and see if he recalls the relationship 
> with poor anchorage and particular root stocks.  It is most likely the 
> staked trees were on M7 because commercial growers around here tend to 
> use this stock more often for its relative precocity and greater 
> dwarfing affect.
>  
> The limited literature on my shelf seems to suggest both root stocks 
> are relatively well anchored with a slight nod to 111 as superior in 
> this regard but there's no mention of the affect of soil texture in 
> the anchorage equation.  On separate issues 111 is rated far superior 
> in light droughty soils and more resistant to crown rot in poorly 
> drained ones.
>  
> I hope some others will offer their observations on this subject.
>  
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