Spatial Distribution of Rhopalosiphum padi (L.) (Homoptera: Aphididae) in Spring Cereals in Sweden and its Importance for Sampling

Publisher Website
Google Scholar
Abstract
The spatial distribution of the bird cherry-oat aphid Rhopalosiphum padi in spring cereals was analyzed using the negative binomial common k , Taylor's power law, and Iwao's regression technique. A common k could not be fitted to all data because of the large range in densities. Taylor's method was chosen instead of Iwao's because of problems with interpretation of the results. Using Taylor's regression coefficients, sequential count and sampling decision plans were developed. Their uses in the field for forecasting and monitoring for economic thresholds are discussed.

This publication has 5 references indexed in Scilit: