Berry Experiment

Researcher

M Hagidimitriou, Department of Horticulture, UW-Madison

Description

This problem comes from a horticulturist (Hagidimitriou and Roper 1994) investigating the relative energy balance between vegetative and flowering parts of cranberry uprights in the marshes of northern Wisconsin. It is very difficult to separate individual plants as they tend to overlap considerably. In fact, a large cranberry bed may be essentially one plant! The researcher examined one cranberry bed which was divided into six samples for measurement purposes. Soluble sugar and starch (conc) were measured at various periods through the growing season for random samples of roots, stems and uprights. Later in the season, the upright portions were distinguished as either flowering or vegetative. For each measurement day, the scientist wished to compare photosynthesis in these plant parts. The scientist was interested in assessing the change in sugars and starches over the course of the summer. That is, was one consistently higher than the other, or does this depend on Julian date?

Reference

Hagidimitriou M and Roper T (1994) `Seasonal changes in nonstructural carbohydrates in cranberry', J. American Society of Horticultural Science 119, 1029--1033.

Data & Setup

berry.dat

sample tissue conc1 conc2 conc3 conc4 conc5 conc6 conc7

SAS Data Analysis

berry.sas

berry.prt

repeated measures with blocking

Book Figures