Results of insecticide sprays applied to black walnut foliage infested with walnut caterpillar larvae. Each treatment was applied on 3 branches at Simpson, III., on Aug. 10, 1976.
| No. of live larvae before treatment | No. of larvae found after treatment Aug. 12 | ||
|---|---|---|---|
| Treatment & rate/100 gal. | Aug. 10 | Live | Dead |
| Malathion, 50EC, 1.0 qt. | 130 | 0 | 91 |
| 83 | 0 | 79 | |
| 19 | 0 | 11 | |
| Diazinon, 25EC, 1.0 qt. | 58 | 0 | 36 |
| 24 | 0 | 12 | |
| 123 | 0 | 22 | |
| Acephate, 75SP, 1.0 lb. (Orthene) | 41 | 0 | 15 |
| 59 | 0 | 17 | |
| 43 | 0 | 21 | |
| B. thuringiensis, WP, | 33 | 0 | 17 |
| 0.5 lb. (Dipel) | 73 | 0 | 52 |
| 62 | 0 | 23 | |
| Check | 19 | 18 | 0 |
| 17 | 17 | 0 | |
| 60 | 24 | 0 | |
| 844 | 59 | 396 | |