Treesearch

Very few tree species make naturally durable fence posts. Osage-orange, mulberry, black locust, cypress, and some species of cedar are known for the good service they give. But in no case are their names a guarantee. Only the heartwood of these species possesses adequate durability .

The Midsouth manufactured 95, 000 tons of wood charcoal in 1961. This represents a gain of 28 percent over output in 1956, when the industry was last surveyed. The number of charcoal plants has increased from 29 to 90.

Observations in the southern pinelands have shown that serious damage to plantations by cattle browsing and trampling is limited to trees less than 6 to 8 feet tall . except where cattle are concentrated (Cassady. Hopkins. and Whitaker. 1955). The poss ibility that application of fertilizer with clean cultivation would increase growth rate. producing a 6- to 8-foot tree in 3 or 4 years , plus the need to know more about grow th response of slash pine (Pinus elliottii Engelm. val'. elliottii), prompted this study to test the effect of several kinds . rates, and combinations of inorganic...

Available volume tables for shortleaf pine are based on merchantable height and do not show volumes to the small top diameter limits now used in many areas. Volume tables based on total height are also often preferred because they eliminate the error associated with ocular estimates of merchantable height. The table presented here for natural shortleaf pine is based on total tree height and gives volume estimates for the commonly used 4- and 3-inch d.i.b. tops (table 1).

Overrun and underrun data were collected for the four major southern pine species during a series of grade yield studies in the late 1950's in Arkansas, Florida, Georgia, Mississippi, and South Carolina. Each of the 1,491 logs was carefully scaled by the Doyle, Scribner Decimal C, and International ¼-inch log rule. All logs were sawed on. circle mills and the variations shown are based on green lumber tallies for each log. Only full scale (sound) log data are shown in table 1. The small number of defective logs and their wide variation in overrun militated against their inclusion.

In the early 1930's several publications focused attention on the desirable characteristics of eastern white pine (Pinus strobus L. ) growing in the Southern Appalachians. In 1932 Copea reported on the excellent growth of natural and planted stands and their relative freedom from blister rust and white pine weevil. After an extensive survey he concluded: "In North Carolina, Tennessee, and north Georgia, where white pine has shown such excellent growth rates, the amount of ribes (R. cynosbati) present in the altitudinal zones in which white pine thrives isso small that eradication costs...

The large increase in planting forest trees in the United States during the last 10 years has resulted in a tremendous increase in the demand for planting stock. This demand has been exceptionally heavy in the South, where favorable growing conditions and the use of fast-growing species have made forest farming a profitable business. Seedling production in southern nurseries increased from 400 million in 1955 to more than a billion in 1959. Although the closing of the Soil Bank Program has curtailed production considerably, seedling demand during the next few years is expected to remain...

Wide acceptance of Bitterlich's (2) method of sampling, popularized in this country by Grosenbaugh (3), with adaptations such as the variable plot used by Forest Survey in the Southeast, has opened a new era in forest surveying. The efficiency of these sampling methods, accompanied by the timely availability of electronic computing machines, has made it feasible to collect and retain large amounts of forest inventory information. Each tree on the sample plot now can be treated individually, recording such descriptive data as species, tree quality, and crown class, along with stem dimensions...

At about 5:30 AM, may 24, 1961, four Common Nighthawks, Chordeiles minor, were collected from a group of nearly a dozen feeding at low level along a roadside in Rapides Parish, west of Alexandria, Louisiana. Upon subsequent examination of the distended stomachs of these birds, it was found that approximately 70% of the contents consisted of winged reproductives of 2 species of ants, Atta texana (Buckley) and Iridomyrmex pruinosus (Roger). The swarming behavior of these 2 ants seems hitherto unreported in the literature.