Article Figures & Data
Figures
- Fig 1.
The terminal branches of a small black walnut tree severely defoliated by the walnut caterpillar.
Tables
- Table 1.
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 - Table 2.
Results of insecticide sprays applied to black walnut foliage infested with 4th instar walnut caterpillars. Each treatment was applied on 3 branches at Simpson, III., on Aug. 18, 1976.
No. of live larvae before treatment No. of larvae found after treatment Aug. 24 Treatment & rate/100 gal. Aug. 18 Live Dead Malathion, 50EC, 1.0 qt. 25 0 25 25 0 25 25 0 25 Diazinon, 25EC, 1.0 qt. 25 0 25 25 0 25 25 0 25 Acephate, 75SP, 1.0 lb. (Orthene) 25 0 25 25 0 25 25 0 25 B. thuringiensisWP, 25 0 25 0.5 lb. (Dipel) 25 0 25 25 0 25 Check 25 21 4 25 22 3 25 20 5 375 63 312
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