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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Issue 51 (1962) → Phosfon-D Retards Height Growth of Black Locust

Phosfon-D Retards Height Growth of Black Locust

A new chemical, Phosfon-D , used by some florists to retard stem elongation and increase stem diameter, may be useful to tree nurserymen. Some hardwood seedlings become too large for convenient handling after only one growing season. Seedling size can be influenced by pruning, fertilizing, bed density, sowing date, and watering schedules, but none of these is completely satisfactory. The new chemical was tried on black locust (Robinia pseudoacacia L.), a fast-growing species. It significantly2 retarded height growth of black locust in pots, but was somewhat less effective in a nursery trial.


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Author(s): Robert D. Williams

Publication: Tree Planters' Notes - Issue 51 (1962)