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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 44, Number 4 (1993) → Effects of DCPA/Napropamide Herbicide Tank Mix on Germinants of Seven Hardwood Species in Tree Nursery Beds

Effects of DCPA/Napropamide Herbicide Tank Mix on Germinants of Seven Hardwood Species in Tree Nursery Beds

Two pre-emergence herbicides-DCPA and napropamide-were applied as a tank mix of 4.76 kg (10.5 pounds) and .45 kg (1 pound) active ingredient per acre, respectively, to nursery beds of seedlings of 7 different hardwood species at the time of germination but before seedling emergence. With the exception of American plum, germination counts and observations of seedling growth and condition revealed no damage from these herbicides on these hardwood species. Spring applications of these herbicides as a tank mix have several advantages over seperate fall applications (just after sowing), including fewer applications of DCPA and napropamide needed to achieve adequate weed control, reduced loss of herbicide due to leaching and decomposition, reduced time spent spraying, and an increased window for application that achieves adequate control of weeds.


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Author(s): Vincent A. Smith, David B. Orr, Elwood R. Hart

Publication: Tree Planters' Notes - Volume 44, Number 4 (1993)

Volume: 44

Number: 4