Thirty five-year results from seven Pinus elliottii (Engelman.) and Pinus taeda (L.) provenance trials in South Africa

Abstract

In 1937 a number of composite trials of Pinus elliottii var elliottii and P. taeda were established throughout South Africa, with seed of 6 P. elliottii and 11 P. taeda provenances, supplied by the Southern Forest Experiment Station, U.S.A. The trials were located at Tweefontein, Dukuduku, Kwa-Mbonambi, Border North, Border South, Kleinplaat and Lottering. The layout was a completely randomized design with a variable number of replications (1 to 4). The trials were measured regularly until 1972. The results of these trials can be summarised as follows: