Insect Pest Management in Virginia Cotton, Peanut, and Soybean

Table 23. Stand counts, thrips injury ratings, and yield, CT11-THP-PHY. Tidewater AREC, Suffolk, VA, 2011.
Plants/35 row ft 1 Thrips injury rating 2 Lint
# Variety Material Rate May 18 May 25 May 18 May 25 May 31 Jun 6 lb/acre 3
1 PHY 367 WRF Avicta CP --- 96.1 a 91.0 a 0.94 a 1.75 b 2.06 b 1.25 bc 804
2 PHY 367 WRF Avicta CP
+ Temik 15G
3 PHY 367 WRF Avicta CP
+ Starter
---
5 lb/A
---
See footnote 4
95.1 a 90.5 a 0.75 b 1.31 c 1.13 c 0.50 d 910
93.5 a 88.4 a 0.75 b 1.75 b 2.56 a 1.13 c 774
4 PHY 375 WRF Avicta CP --- 77.6 b 75.4 b 0.81 b 2.25 a 2.44 a 1.31 b 743
5 PHY 375 WRF Avicta CP
+ Temik 15G
6 PHY 375 WRF Avicta CP
+ Starter
---
5 lb/A
---
See footnote 4
78.0 b 75.0 b 0.75 b 1.06 c 1.31 c 0.50 d 770
76.3 b 74.5 b 1.00 a 2.25 a 2.56 a 1.56 a 688
LSD 11.41 10.19 0.11 0.40 0.23 0.18 NS
Means within a column followed by the same letter(s) are not significantly different (Protected LSD, P=0.05).
1 Based on sampling all plants in rows 3 and 4 of each plot.
2 Thrips injury based on a 0-5 scale, 0 = no injury and 5 = dead plants.
3 Cotton was harvested on October 17. Gross yields were reduced by 56.5% to account for seed and trash.
4 Starter = 10 gpa of 10-34-0 liquid fertilizer applied 2 inches below and 2 inches beside the seed at planting (2x2 placement).