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Home → Publications → Tree Improvement and Genetics → Northeastern Forest Tree Improvement Conference → 30th Northeastern Forest Tree Improvement Conference (1987) → Ammonium Nitrate Application to Stimulate Cone and Seed Prodution in Black Spruce and Red Pine

Ammonium Nitrate Application to Stimulate Cone and Seed Prodution in Black Spruce and Red Pine

In order to test whether fertilizer can increase the amount of cone and seed production, plots in a precommercially thinned black spruce stand and in a red pine seed production area were fertilized in May, 1984, with ammonium nitrate. Application rates were 0, 250 and 500 pounds per acre of elemental nitrogen in the black spruce stand, and 0, 134, 214 and 267 pounds per acre in the red pine stand. Red pine and black spruce cones were collected from 20 dominant trees in each of the plots in the fall of 1985. While not statistically significant, the rates of 250 pounds per acre in the black spruce stand, and 267 pounds per acre in the red pine seed production area, produced the most cones and the greatest amount of seed on a per-acre basis.


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Author(s): David I. Maass

Publication: Tree Improvement and Genetics - Northeastern Forest Tree Improvement Conference - 1987