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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 20, Number 3 (1969) → A Better Estimation of Nursery Survival Used in the Sowing Formula

A Better Estimation of Nursery Survival Used in the Sowing Formula

The factors S, P, and G are specific to each particular seed lot and are determined by seed testing. The seedlings desired (D) is chosen as the number needed. The estimated Nursery Survival (N) has historically been a figure developed by nurserymen for their particular operation. Nursery Survival represents the percent of the viable seeds sown that the nurseryman expects will produce a plantable seedling. This Nursery Survival, however, is an average figure applicable to the nursery as a whole. Seed germination, seeds per pound, and to a lesser extent seed purity are known to vary greatly from lot to lot. It seems logical then that each seed lot may have its own Nursery Survival, perhaps unrelated to the above three sowing components, S, P, and G. How Nursery Survival (N), which is the least precise component of the sowing formula, can be more accurately determined is the purpose of this paper.


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Author(s): Boyd C. Wilson

Publication: Tree Planters' Notes - Volume 20, Number 3 (1969)

Volume: 20

Number: 3