Treesearch

Furrow seeding is a one-man, one-trip operation designed to prepare a favorable seedbed on forest sites and sow pine seed in rows. Many machines have been developed for the job. This note illustrates and gives operating instructions for two of them, the compact H-C furrow seeder and an adaption for use behind a fireplow. For those wishing to build one of the machines, a complete set of detailed drawings is available on request.

Losses of longleaf pine seeds to animals (mostly mice, Peromyscus spp.) in well-stocked, second-growth stands were about the same on fresh fall burns as on old roughs, worse on winter burns than on old roughs. Tree percents (the number of seedlings per 100 seeds) were low, but uniformly higher in the roughs.

This publication outlines a simple, inexpensive system of cottonwood (Populus deltoides Marsh. ) improvement which can be easily and immediately incorporated into an industrial or State planting program. It is recommended for use until improved trees can be bred by more sophisticated but necessarily slower methods.

Tests were made of the oleoresin-yielding potential of Pinus eliottii elliottii from a number of geographic sources planted in Louisiana 200 miles west of the natural range of the species. Seed sources ranging from South Carolina to Florida and westward to Louisiana did not differ in oleoresin yield under microchipping, nor in viscosity and exudation pressure of the resin. Individual trees, by contrast, varied greatly, their productivity being correlated with diameter, length of live crown, ratio of crown length to total height of tree, and viscosity of resin.

The amount of light that Pinus taeda L. seeds require for germination is reduced by cold moist stratification aimed at breaking seed dormancy. Irradiation with white light during stratification further fulfills the light requirement of these seeds.

Seeded lob lolly pine should be released from overtopping hardwoods early in the first growing season. Delaying release for 1 or 2 years substantially reduces height growth regardless of site or cover conditions, and it may result in seriously depleted stocking. On average or better sites, seeding failures rarely occur when hardwoods are deadened promptly. However, on severe sites, even when seedlings are released, first-year mortality can be high in a dry year. But it is on these sites that early release. is most valuable, because pines can survive harsh conditions better when freed...

This paper summarizes recommendations for direct-seeding slash pine. Guides for seeding longleaf and loblolly pine were published in 1959 and 1961 as Occasional Papers 171 and 188 of the Southern Forest Experiment Station. The southern pines vary in their requirements for successful establishment, and recommendations given here for slash pine should not be applied to other species.