Masters Theses

Date of Award


Degree Type


Degree Name

Master of Science


Plant, Soil and Environmental Sciences

Major Professor

David W. Lockwood

Committee Members

D. L. Doffey, H. D. Swingle


Leaf samples from Golden Delicious apple trees were collected at nine dates throughout the growing season at four locations in Tennessee. The leaf samples were analyzed for precent N, P, K, Ca and Mg to determine the seasonal trends of these elements and to determine if a common period of relatively little nutrient change exists. N, P and K showed a general decrease in concentration throughout the season. Ca levels increased throughout the:growing season, but Mg showed irregular changes. A period of minimal change in mineral composition of leaves with the exception of Mg was July 30 through August 27 for all locations. This would be the ideal time for collection of leaf samples for foliar analysis.

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