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Swietenia species. Trial summary no. 4.

A contribution to a continuing investigation to determine the effect on drainage of mixing gravel chips or sand with scrape topsoil in the standard nursery mix used in the Lololo nursery.

An experiment to investigate the effect of basic soil type and mixture ingredients and mixture sterilisation on the growth of pinus caribaea var.hondurensis seedlings in standard polythene pots.

A comparison of the early performance in field plantation of root-modified bareroot planting stock of pinus caribaea var.hondurensis with standard potted planting stock.

Experiments to examine the effect of varying the amount and constitution of inorganic fertiliser added to the nursery potting mix on the performance of pinus caribaea var. hondurensis seedlings grown in standard clear polythene pots.

An outline of the objectives of the mahogany(swietenia macrophylla) vegetative reproduction programme with an interim report on results to date.

An investigation of the variation of tree form in pinus caribaea var.hondurensis in field plantations.