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Home Publications Tree Planters' Notes Tree Planters' Notes Issue 71 (1965) Two Devices for Speeding Morphological Assessment of Nursery Stock

Two Devices for Speeding Morphological Assessment of Nursery Stock

During annual nursery stock assessment, fertiliser trials, and other growth studies,.the British Columbia Forest Service measures many hundred seedlings. To facilitate rapid measurement, two pieces of equipment have been designed. The first device (fig. 1) enables one man to record the root length, shoot length, and root-collar diameter of about 120 seedlings per hour. It consists essentially of a dial gage clamped to a laboratory retort stand, to which is bolted a board 5 feet long with two sections of metre-stick attached. The contact point of the dial gage rests on a metal or hardwood cylinder, one-fourth inch in diameter and one-half inch in height, which is cemented to the retort stand and projects slightly through a one-half-inch hole in the measuring board.

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Author(s): K. Austin

Publication: Tree Planters' Notes - Issue 71 (1965)