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Introduction and Overview
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acre adelgid annual aphids applied bark blue spruce branches buds buyers C&C farms capital cash flows choose-and-cut Christmas Tree Farm Christmas tree growers Christmas tree investment Christmas tree plantations Christmas tree production Christmas tree species color cost cover crop customers damage develop Douglas-fir eastern white pine effective eggs equipment eriophyid expenses feed feet fertilizer Figure foliage Fraser fir fungus gall grass ground cover grow growth harvest herbaceous herbicides Holly Ridge Christmas inches increase infected land marketing Merchantable Christmas Tree method mites mowing needles Norway spruce number of trees nursery nutrient occur operations percent pest pre-emergent problems produce reduce removed result revenues Ridge Christmas Tree rows sawflies Scotch pine season seedlings selected shearers shearing slope soil pH soil tests spider mites spray spring spruce stumps T.J. Nichols terminal shoot usually vegetation Virginia pine Virginia Tech weed control weevil wholesale whorl