See light measurements for details.

E037: One-cell light sensors are used when taking light meter readings in E037. For each plot, 8 evenly distributed readings are taken below the vegetation in each plot. Four readings are taken above the vegetation, one in each of the four corners of the plot. In those plots containing the grasshopper cages, treatments F and G, light readings are taken in the four corners above the cages and again above the vegetation, but within the cages.