Seasonal and cumulative loblolly pine development under two stand density and fertility levels through four growing seasons. Forest Service research paper

Technical Report · Wed Jun 01 04:00:00 EDT 1994

OSTI ID:7162477

Haywood, J D

A loblolly pine (Pinus taeda) plantation was subjected to two cultural treatments to examine seasonal cumulative pine development in the 9th through 12th growing seasons: (1) pine stocking was either reduced by thinning to 303 trees per acre at a 12- by 12-ft spacing or the plots were left uncut with an original density of 1,210 trees per acre at a 6- by 6-ft spacing, and (2) either no fertilizer was applied or diammonium phosphate was broadcast at 134 lb of phosphorus and 120 lb of nitrogen per acre. Competing vegetation was controlled on all plots. Thinning resulted in less spring height growth in the 9th and 10th growing seasons that not cutting, but thinning increased diameter growth each year. Beginning in the 10th growing season, fertilization increased height, diameter, and basal area per acre growth, with the effect of fertilization on diameter growth being most pronounced on the thinned plots. Therefore, fertilization of thinned plots was more beneficial than thinning alone, and thinning alone resulted in less height and basal area per acre growth than the other treatment combinations for the 4-year period.

• Research Organization: Forest Service, New Orleans, LA (United States). Southern Forest Experiment Station
• OSTI ID: 7162477
• Report Number(s): PB-94-204724/XAB; FSRP-SO--283
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090700* -- Biomass Fuels-- Resources-- (1990-)
COMPILED DATA
CONIFERS
DATA
FERTILIZERS
GROWTH
INFORMATION
NUMERICAL DATA
PINES
PINOPHYTA
PLANT GROWTH
PLANTS
STAND DENSITY
TREES