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Non-destructive, on-plant monitoring of the firmness of apples and tomatoes.

Author(s) : VANDEWALLE X., BAERDEMAEKER J. de, SCHREVENS E.

Summary

In the research the acoustic impulse response technique was used as a non-destructive way of monitoring the apple and tomato firmness while the fruit are developing and ripening on the plants. The firmness of apples, which are picked before and after noon, is thought to differ. Twenty apples grown under the same conditions were followed on three days in September 1993 by measuring their firmness in the morning and in the afternoon. By means of the active drain system and thermal conductivity sensing the moisture content of a rockwool substrate for hydroponic tomato cropping was monitored and controlled throughout an autumn cultivation. For twenty tomatoes per treatment, the fruit firmness evolution was monitored from immature green over breaker stage to full ripeness. Results are given.

Details

  • Original title: Non-destructive, on-plant monitoring of the firmness of apples and tomatoes.
  • Record ID : 1996-2893
  • Languages: English
  • Source: The post-harvest treatment of fruit and vegetables. Quality criteria. Proceedings COST 94.
  • Publication date: 1994/04/19
  • Document available for consultation in the library of the IIR headquarters only.

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