Yazar
David B Drummond
3 cilt bulundu.
Cilt sonuçları
Evaluation of the spray nozzle type and configuration in the application of spore suspensions of the fusiform rust fungus to Southern pines
David B. Drummond · USDA Forest Service Forest Pest Management Methods Application Group
17 sayfa · 1981
Cronartium quercum / Spraying equipment / Aerial spraying and dusting in forestry / Loblolly pine / Equipment and supplies
Dwarf mistletoe in western hemlock in southeastern Alaska
David B. Drummond · Methods Application Group, Forest Insect and Disease Management, Forest Service, USDA
14 sayfa · 1979
Dwarf mistletoes / Western hemlock / Diseases and pests / Arceuthobium tsugense / Forests
Timber loss estimates for the coniferous forests of the United States due to dwarf mistletoes
David B Drummond · U.S. Dept. of Agriculture, Forest Service, Forest Pest Management, Methods Application Group
24 sayfa · 1982
Conifers / Dwarf mistletoes / Diseases and pests