| Autor: |
Luna, J. M., Linker, H. M., Stimac, J. L., Rutherford, S. L. |
| Zdroj: |
Environmental Entomology; April 1982, Vol. 11 Issue: 2 p497-497, 1p |
| Abstrakt: |
Two methods for estimating absolute densities of three size classes of velvetbean caterpillar, Anticarsia gemmatalis (Hübner) (Lepidoptera: Noctuidae), larvae in soybean fields are described and evaluated. These absolute-density estimation methods, sweep-net and ground-cloth, were used to sample field populations of velvetbean caterpillar larvae in soybean. These data were used to derive equations converting sweep-net and ground-cloth larval density estimates to absolute-density estimates. Calibration equations for converting sweep-net estimates to ground-cloth estimates are also presented. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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