REQUEST FOR INFORMATION FOR SPECIFIC SITUATION
london at sunSITE.unc.edu
Wed Dec 16 13:28:29 EST 1992
In article <01GSDRL3058W8Y5L0E at clust1.clemson.edu> WMILLER at PRISM.CLEMSON.EDU
>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 just give
>it the old DEL.
>Many thanks for your input.
>Walker Miller, Wmiller at Clust1.clemson.edu
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