Reference Report for IND84068583
| Title: | Effects of tobacco budworm (Lepidoptera: Noctuidae) infestations on pod damage and yield loss in soybean [Heliothis virescens]. |
| Authors: | McWilliams, J.M. |
| Source: | J. Econ. Entomol. 1984, 77(2):364-369 |
| Abstract: | Field-plot tests were carried out in Mississippi in 1977-80 on the effect of larval infestations with Heliothis virescens (F.) on pod damage and yield loss of soyabean. Infestations were established at various levels and times by applying eggs in a spray. The amount of damage and its effect on yield depended on the timing as well as the intensity of infestation. The only infestations that reduced yield were produced by egg application during full bloom. The subsequent larvae were in their 5th or 6th instar during the full-pod growth stage. Such larvae destroyed more seed than comparable larvae during other plant growth stages. The period during bloom when egg application resulted in this critical synchrony lasted 1 week. |
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