1. Table Weekly average Orius and thrips counts by lifestage on samples of marigolds and peppers under different marigold treatments: Blocks, Singles, and no marigolds (None). In these data, adults are distinguished from immatures (A = adults, N = nymphs).
Marigolds
Peppers
NR = not recorded
Treatment
Date
Av. No. Per Beat Sample
Blocks
Singles
None
6/14/2011
Average # Thrips A
0.20 NR
0.00
0.02
Thrips more easily detected on the marigolds than on the peppers - evidence of good scouting location
Average # Thrips N
0.10
This trend continues in the portions of the fields with the marigold/Orius treatments (blocks or singles) throughout the season
6/16 Orius field release onto marigolds
Average # Orius A
Average # Orius N
6/21/2011
1.10
0.63
0.13
Orius adults first appear on marigold blocks
Peppers begin flowering
6/29/2011
1.83
0.43
0.60
0.03
0.23
0.07
Orius nymphs first appear on marigold flowers - evidence of reproduction
7/12/2011
1.60
1.40
0.76
0.46
6.36
0.33
1.77
0.38
0.30
0.12
Oris adults first appear on peppers - evidence of transfer of Orius to peppers after flowering begins
0.37
0.18
Orius nymphs first appear on peppers - evidence of reproduction
7/18/2011
1.73
2.60
1.06
0.42
0.52
Maximum number of thrips on marigold single treatment still low - evidence Orius is keeping thrips numbers from exploding on the Guardians
0.36
0.40
0.22
0.24
0.26
7/26/2011
3.27
1.53
0.88
0.64
Maximum number of thrips on marigold block treatment still low - evidence Orius is keeping thrips numbers from exploding on the Guardians
1.03
0.57
0.84
0.73
0.70
0.72
0.74
Season Average # Thrips A
1.62
1.32
1.51
Peppers under either the marigold blocks or marigold singles have approximately 4.5-fold fewer thrips than the marigolds
Season Average # Thrips N
0.01
or control field
Season Average # Orius A
0.34
0.54
0.29
Season Average # Orius N
0.25