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Effects of nursery fertilizer and irrigation on ponderosa and lodgepole pine seedling size. Forest Service research note

Technical Report ·
OSTI ID:6744827

Eight fertilizer treatments combined with three irrigation regimes were used when growing lodgepole and ponderosa pine seedlings on two soil types at Lucky Peak Nursery near Biose, ID. Seedlings of both species were larger on the sandy loam than the clay loam soil. Milorganite, an organic fertilizer derived from sewage sludge, reduced initial seedbeed densities but had no further effects. Ammonium nitrate increased seedling size on the clay loam, but not on the sandy loam soil. Increased irrigation was more effective in increasing seedling size on the sandy loam than on the clay loam soil. However, ponderosa pine receiving the least irrigation in the nursery grew the fastest for 3 years after being transplanted in the field, possibly because of drought conditioning.

Research Organization:
Forest Service, Ogden, UT (United States). Intermountain Research Station
OSTI ID:
6744827
Report Number(s):
PB-93-150308/XAB; FSRN/INT--408
Country of Publication:
United States
Language:
English