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Browsing Extension Service -- Pacific Northwest Extension Publishing by Author "Landgren, Chal G."

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Browsing Extension Service -- Pacific Northwest Extension Publishing by Author "Landgren, Chal G."

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  • Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension System; Landgren, Chal G.; United States. Dept. of Agriculture ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension System ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1996-04)
  • Landgren, Chal G.; Douglass, Bernard S.; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University Extension Service : [Pullman, Wash.] : Washington State Cooperative Extension Service ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1992-00-00)
    Each Christmas tree species requires special skill and specific knowledge to be grown successfully. True fir Christmas trees are no exception. In fact, the true firs, many argue, require more detailed knowledge, more spe ...
  • Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; Proebsting, William M.; Landgren, Chal G.; United States. Dept. of Agriculture ([Corvallis, Or.] : Oregon State University Extension Service ; [Olympia, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1987-06)
  • Proebsting, William M.; Landgren, Chal G.; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension System ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1992-03)
    Over the past 30 years, Christmas trees have become an intensively managed horticultural crop. During this period, higher standards and increasing competition have given the edge to growers who are progressive and highly ...
  • Oregon State University. Extension Service; Washington State University. Extension; University of Idaho. Extension; Landgren, Chal G.; Fletcher, Richard A.; Bondi, Michael C.; Barney, Danny L.; Mahoney, Ronald Lynn; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University, Extension Service, 2003-06)
    Christmas trees are an enduring holiday tradition. U.S. producers supply about 35 million trees annually. The past few decades have seen the Pacific Northwest’s rise to prominence as the leading Christmas-tree producing ...
  • Oregon State University. Extension Service; Peachey, Ronald Edward; Landgren, Chal G.; Miller, Timothy W.; Washington State University. Extension; University of Idaho. Extension; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Extension ; [Moscow, Idaho] : University of Idaho Extension ; [Washington, D.C.] : U.S. Dept. of Agriculture, 2011-03)
    This publication offers an integrated approach to effective weed management in Christmas trees, incorporating diverse strategies and practices to keep weed populations off balance. It includes strategies for using preven ...

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