Relationship between growth and Nitrogen supply and N concentration to illustrate "deficiency" & "luxury consumption."

Changes in nutrient concentration (N & K) in relation to seedling size.

Changes in nutrient concentration with plant size to show the Steenjberg effect.

Seedling growth plotted against Nitrogen concentration to show a linear relationship.

Growth of seedlings at three fertility levels and four seedbed densities to show interrelationships.

Tabular data for the graphs shown in Slide # 269 of seedling size in relation to three fertility levels and four densities.

Suggested "objectives" in relation to fertility considerations

Graph showing relationship between growth and Nitrogen content in plantation trees over rotation; data of Switzer, Smith & Nelson.

Nitrogen cycling in Pinus taeda (Loblolly pine).

Nutrient cycling in oak.