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Table 2 Experimental replicates, sets of bioassay arenas, and total sample sizes of arenas per tested entomopathogenic nematode and applied concentration in soil-based laboratory bioassays (concentration = 100, 200, 300, 400 and/or 1000 infective juveniles (IJs) per grub equalling 4, 8, 12, 16 and 40 IJs per gram soil, 2.4, 4.8, 7.1 and 9.5 IJs per cm3 soil and 14, 28, 42, 57, and 140 IJs per cm2 soil surface). An experiment consisted of at least two sets of 10 bioassay arenas each, and each arena containing one Anomala graueri grub

From: Management of white grubs (Coleoptera: Scarabeidae) with entomopathogenic nematodes in Rwanda

Treatment Experiments/(sets of 10 arenas across experiments)/sample size of arenas across experiments
  Concentration (IJ per larva)
  100 200 300 400 1000 Total
H. bacteriophora RW14-N-C4a 3 (9) 90 2 (6) 60 2 (6 60 3 (9 90 2 (6 60 12 (36) 360
H. bacteriophora H06 5 (15) 150 5 (15) 150 4 (12) 120 5 (15) 150 2 (6) 60 21 (63) 630
S. carpocapsae All 3 (9) 90 2 (6 60 1 (3) 30 1 (3) 30 2 (6) 60 9 (27) 270
S. carpocapsae RW14-G-R3a-2 3 (9) 90 3 (9) 90 2 (6) 60 3 (9) 90 4 (12) 120 15 (45) 450
Steinernema sp. RW14-M-C2a-3 3 (9) 90 2 (6) 60 2 (6) 60 3 (9) 90 2 (6) 60 12 (36) 360
Steinernema sp. RW14-M-C2b-1 3 (9) 90 3 (9) 90 2 (6) 60 3 (9) 90 4 (12) 120 15 (45) 450
S. longicaudum X7 3 (9) 90 3 (9) 90 2 (6) 60 3 (9) 90 2 (6) 60 13 (39) 390
Untreated control Similar numbers for each experiment