Treesearch

The relationships between cubic-foot growth and diameter distribution, and residuals from cubic-foot growth equations and diameter distribution were tested on 103 plots of even-aged managed loblolly pine. A series of diameter distribution characterizations using mathematical expressionsof the entire distribution curve, mathematical expressions of individual attributes of the diameter distribution curve, and biological characterizations of it were computed. The gamma distribution and cumulative frequency distribution by dbh classes of the Pearl-Reed population growth curvewere computed....

A mixture of Arasan 75 and Endrin 50W was tried in two concentrations on acorns of Shumard oak ( Quercus shumardii) and swamp chestnut oak ( Q. michauxii) to determine its effectiveness in protecting acorns from damage by gray squirrels ( Sciurus carolinensis) and cotton rats ( Sigmodon hispidus). Treated and untreated acorns were exposed to 12 gray squirrels and 12 cotton rats in a series of cage tests. The repellent was effective against both squirrels and cotton rats when untreated acorns were also available. It was quite effective against cotton rats, but not against squirrels, when...

Models are developed for estimating optimal growing stock levels and rotation ages for loblolly pine. Under a profit maximization goal, they provide for varying stumpage prices, stand ages, site indexes, stocking levels, alternative rates of return, and regeneration costs for two single-product objectives. Quality differential as expressed in stumpage prices is recognized. A system is also provided for determining optimal stocking levels at the same marginal rate of return as that selected for determining optimal rotation age. Using a loblolly pine growth study in the Southeast for the...

This publication is included in a four part series. The other parts of the series can be found through the following links: Progress Report #1: https://www.fs.usda.gov/psw/publications/fons/psw_1960_fons001.pdf Progress Report #2: http://www.srs.fs.usda.gov/pubs/ja/1960/ja_1960_fons_001.pdf Final Report: http://www.srs.fs.usda.gov/pubs/ja/1966/ja_1966_byram_001.pdf

The rapidly expanding interest in hardwoods in the South has caused many forest nurseries, to begin growing hardwood as well as pine seedlings. Apparently most nurserymen have been able to accomplish this change without great difficulty. Nursery sites and soil conditions suitable for pines should be basically satisfactory for hardwoods also.

Radial growth of several southern hardwood species was significantly increased by irrigation.

This note brings together information gathered by the Southern Hardwoods Laboratory as to the suitability of soils in the Midsouth for growing hardwood timber.

This paper reports preliminary observations on a basal canker that killed eastern cottonwood (Populus deltoides) in a 6500-acre commercial plantation at Fitler, Mississippi.

Weed control in the first year is essential for establishing a cottonwood plantation, for the young trees can neither survive nor grow well if they must compete with other plants. Once the light and moisture conditions are established in its favor, cottonwood becomes the fastest growing tree in the South.