Guidelines for the operational use of Bacillus thuringiensis against the spruce budworm / [by Oswald N. Morris, John B. Dimond, and Franklin B. Lewis].

by Morris, Oswald N.
[Washington, D.C.?] : U.S. Dept. of Agriculture, Forest Service, Cooperative State Research Service, [1984]

Series: Spruce budworms handbook
Agriculture handbook (United States. Dept. of Agriculture) ; no. 621.

Aerial field trials with a new formulation of Bacillus thuringiensis against the spruce budworm, Choristoneura fumiferana (Clem.) / by O.N. Morris, J.A. Armstrong and M.J. Hildebra...

by Morris, Oswald N
Ottawa : Chemical Control Research Institute, 1976.

Series: Information report (Chemical Control Research Institute (Canada)) ; CC-X-144

Comparative effectiveness of three commercial formulations of Bacillus thuringiensis for control of the spruce budworm, Choristoneura fumiferana (Clem.) / O.N. Morris, M.J. Hildebr...

by Morris, Oswald N.
Sault Ste. Marie, Ont. : Forest Pest Management Institute, 1981.

Series: Report (Forest Pest Management Institute (Canada)) ; FPM-X-47

Response of the spruce budworm, Choristoneura fumiferana (Clem.), to graded dosage rates and single versus double applications of Bacillus thuringiensis var. kurstaki / O.N. Morris...

by Morris, Oswald N.
Sault Ste. Marie, Ont. : Forest Pest Management Institute, 1982.

Series: Report (Forest Pest Management Institute (Canada)) ; FPM-X-53