Symposium on Agroacoustics: Acoustical System to Detect Larvae in Infested Commodities

Authors

  • J. C. Webb
  • D. C. Slaughter
  • C. A. Litzkow

Abstract

An acoustical system to detect larvae in post-harvest commodities is described. The system can detect one-day old fruit fly larvae in grapefruit, mangoes, and other similar fruit and lepidopterous and coleopteran larvae in individual kernals as well as bulk grain. The detectors have been modified so that they can be adjusted to accept fruit of various sizes and shapes. A computer system and software has been developed to monitor the feeding activity of the immature insect for its complete life cycle. The signal is amplified approximately 90 dB and then filtered through appropriate bandpass filters. The variables (trigger levels, time intervals of data collections, and sample rates) are controlled by the computer software. The computer also stores and analyzes the data.

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Published

1988-12-01

Issue

Section

Literature Review Articles