Effect of harvesting methods and post-harvest treatments on storage behaviour of Nagpur mandarin (Citrus reticulata) fruit.
Sonkar, R. K.; Ladaniya, M. S.; Shyam Singh;
Indian Journal of Agricultural Sciences Year: 1999 Vol: 69 Issue: 6 Pages: 434-437 Ref: 15 ref.
1999
บทคัดย่อ
A study was conducted in Maharashtra during 1995-97 to evaluate harvesting methods (snapping (twisting and pulling) or clipping) with reference to injuries and shelf-life of mandarins during the Ambia (spring) and Mrig (monsoon) crop seasons. Harvesting rate was slightly less in clipping (315 fruits/person per hour) compared with the conventional snapping (350 fruits/person per hour). When harvested by snapping, 8.79-9.14% fruits were injured at the stem end (slight to severe plugging) in spring, resulting in economic loss from unmarketable fruits. In monsoon 1997, harvesting by snapping resulted in negligible (< 1%) injuries. Injuries due to puncturing by longer stems to adjacent fruits were 0.25 to 0.34% in snap harvest and 1.72% in clipping. Wax (highshine wax 2.5%) treatment reduced fruit weight loss in storage. The addition of 500 ppm 2,4-D in wax helped in retaining greenness of the pedicel in clipped fruit. Decay was considerably less in clipped fruit and further reduced by fungicidal wax
treatment during storage up to 15 days under ambient conditions and 45 days under refrigerated conditions. Carbendazim (2000 ppm) treatment through wax was ineffective especially in snap harvested fruit (with slight to severe injury) in controlling decay. The total soluble solids content did not change much while titratable acidity dropped more in snap harvested fruit as compared to clipped fruit in storage. Flavour and acceptability score were highest in clipped fruit after storage.