REQUEST FOR INFORMATION FOR SPECIFIC SITUATION
WMILLER at PRISM.CLEMSON.EDU
WMILLER at PRISM.CLEMSON.EDU
Wed Dec 16 11:33:00 EST 1992
I am a blueberry grower located in Pickens County South Carolina
(western corner). I am interested in switching to to
agroforestry system for reduction in frost risk along with
several other reasons. The current system is grassed middles on
a highly erodible site. It is in it's 10 leaf.
There is 5 acres of blueberries, we are adding 1.5 acres of
blackberries over the next 2 years. Will also add raspberries in
the future. We are a pick-your-own with limited chain stores
sales for a secondary market. We are a small family business.
We are "sundowners". The soils have a residual pH of about 5.2
unlimed; range from poor to excessive internal drainage within a
30 meters; have good surface drainage. PHYTOPHTHORA CINNAMONI is
present. Rainfall about 1100 mm a year. Low temp. about 5-10 f
about once or twice a year. Additioal information available on
The gist of our thinking so far is frost is a significant risk
factor. Bushes protected form the north sky by trees
consistently produce provided they have at 60% sunlight and root
competition is not a factor. Thoughts - consultation with local
ag meteorologist suggests east west rows at about 100 to 120 ft
intervals. Some Soil Conservation Service information suggest
50% porosity to wind and similar spacing and direction. Clemson
University Extension forestry suggest loblolly pine. It is
tolerant of pore drainage and and does not form epicormic shoots,
therefore would limbing up to maintain air drainage under canopy
and side limbing to keep it narrow. Needles could be thrown to
row middles as mulch.
To be profitable, because of competition losses, there needs to
be interim product(s) as well as terminal product and cyclic
procedure. How about naval stores ie loblollyxlongleaf hybrids?
How about nut pines (Korean?)? Should they be grafted? Whitepine
rootstock? What about nursery sources of the above. How about
the blackberry psyllid. Pines seems to make sense as they have a
canopy during critical spring frosts but we have noted that
hardwoods are effective also. Have thought about chestnuts but
wonder if they have the right tree shape(?) would not be to
competitive in terms of root system(?) and also have problems
with epicormic shoots. How about compatibility(ie alleopathy)?
Loblolly is reported associate okay/well with ericaceous plants.
I/we would love to here ideas and observations with supporting
literature and references that will bear up under scientific
scrutiny. We are trying to make our production system
sustainable economically, environmentally and socially. We do
use plant pharmaceuticals and are very conscious of their
characteristics with regards to environment and safety to all.
This maybe outside the intent of this reflector. If so jsut give
it the old DEL.
Many thanks for your input.
Walker Miller, Wmiller at Clust1.clemson.edu
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