The effects of fertilization and spacing on cone production and tree growth in a young black spruce (Picea mariana (Mill.) BSP) plantation
University of New Brunswick
A fertilization and spacing experiment was established in a young black spruce plantation. The experiment was undertaken to present the effects of fertilization and spacing on cone production and tree growth. Fertilization did not increase 1983-84 foliage or bud production but it greatly increased the proportion of buds that became reproductive. Fertilization did not increase male or female strobili production in naturally poor seed years but significantly increased production the second year after application. Spacing increased 1983-84 foliage and bud production in the lower whorls but did not significantly affect growth and subsequent development in the upper crown region. Spacing greatly increased male and female strobili production in naturally good seed years but was insignificant in increasing strobilus production in poor seed years.