Manual picking and mechanical harvesting of sour cherry fruit ‘Nefris’ and fruit quality
Jolanta A. Szymczak*, Paweł Wawrzyńczak**
**Department of Fruit Storage and Processing
**Department of Mechanization
**Research Institute of Pomology and Floriculture
**Pomologiczna 18, 96-100 Skierniewice, Poland
The experiment was established in 1997 in the experimental orchard of the
Institute of Pomology and Floriculture at D±browice. Mechanical harvest
of fruit of sour cherry ‘Nefris’ began in 1999. The results of three years
of study (1999-2001) are presented here. Quality of fruit after the
mechanical harvest was evaluated in comparison to that of fruit after
manual picking. Immediately after the harvest, percentages of the
following groups of fruit were calculated: mature, with no damage;
immature; with stem; with damage (mechanical and other). After sorting,
the quality of mature fruit was described by the physical, chemical, and
sensory parameters. Suitability of sour cherry fruit for processing after
mechanical harvesting was tested on compotes and frozen fruit.
Over 85% of the crop consisted of good quality fruit (mature and without damage). The remainder of the fruit
had damage, mainly frost-related (small fruits, not coloured, malformed).
Mechanical harvesting caused no significant mechanical damage in
comparison with manual picking. Fruit with mechanical damage was below 2%
of the total crop for both harvesting methods. Harvesting methods had no
effect on quality parameters. Sensory analysis of sour cherry compotes
showed that the products showed very good overall quality. The appearance
of skin did not show changes which could be attributed to bruising during
the mechanical harvesting. The frozen sour cherry fruits after mechanical
harvesting had a more attractive appearance; they retained their original
shape and also received higher notes in hardness when compared with the
fruit collected manually.
Szymczak J.A., Wawrzyńczak P., 2001. Manual picking and mechanical harvesting of
sour cherry fruit ‘Nefris’ and fruit quality. Folia Horticulturae 13/2: 111-119.