I worked in this field for 23 years before becoming a translator (although I worked with insecticides rather fungicides, but the experimental design is the same). I agree with my colleagues, I'm just trying to help out. We called these experiments screening trials and we did exactly as your text says, compared several experimental products against each other and usually at least one standard (temoin) which is a registered or labeled (betters terms than "licensed") product and an untreated check or untreated control. And we usually had 4 "reps" or "blocks" (repetitions) of test plots, just like in your text, which were in a random, different order in each rep (to account for possible within field variation), hence the name randomized complete block design. We would spray the different treatments on all 4 reps and then take data (in our case nos. of insects remaining, damage ratings, yields, etc) from each plot in each rep and then we would analyze the data statistically with one of the multiple range tests (Duncan's, LSD, etc.) and determine which treatments, if any, provided statistically better or equal control to the standard (temoin) and the untreated check (faux temoin).