wonions {sm}

Yield-density relationship for White Imperial Spanish onion plants

Description

These data were collected in a study of the relationship between the yield of White Imperial Spanish onion plants and the density of planting.

The variables are:

Density	density of planting (plants/m^2)
Yield	yield (g/plant)
Locality	a code to indicate Purnong Landing (1) or Virginia (2)

The data were collected by I.S.Rogers (South Australian Dept. of Agriculture & Fisheries). They are listed in Ratkowsky (1983), Nonlinear Regression Modeling. Dekker, New York.