Spray control of the fusiform rust [Cronartium fusiforme] in forest-tree nurseries.

Siggers, P. V., (1951). Journal of Forestry 49(5), 350-2. English language

The brown spot needle blight of pine seedlings.

Siggers, P. V., (1944). Technical Bulletin, United States Department of Agriculture(No. 870), 1-36. English language

Scirrhia acicola [Dearn], n. comb., the perfect stage of the fungus causing the brown-spot needle blight of Pinus.

Siggers, P. V., (1939). Phytopathology 29, 1076-7. English language

The brown-spot needle blight of longleaf pine seedlings.

Siggers, P. V., (1932). Jour. Forestry. 30, 579-593. English language