Soil Parameter Mapping and Ad Hoc Power Analysis to Increase Blocking Efficiency Prior to Establishing a Long-Term Field Experiment

Table 3

Power to detect a 5 percent difference for organic matter and a 10 percent difference for total weeds for a completely randomized design and 4 different blocking scenarios. = 0.05, number of groups = 6, = 4.

Model
Completely randomized design	0.10	0.06
Blocking from west to east	0.14	0.14
Blocking to optimize organic matter	0.98	0.06
Blocking to optimize weeds v1	0.84	0.19
Blocking to optimize weeds v2	0.52	0.42