บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of 2,4 D, 2,4 DP, triclopir and GA on preharvest fruit drop and senescence of “Tarocco” blood oranges in Sicily citrus orchard.

Tumminelli R., Conti F., Maltese U., Pedrotti C., Calcaterra S., Amico C.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004. page 35

2004

บทคัดย่อ

Effect of 2,4 D, 2,4 DP, triclopir and GA on preharvest fruit drop and senescence of “Tarocco” blood oranges in Sicily citrus orchard.   “Tarocco” blood orange [Citrus sinensis (L) Osb.] has a tendency for a heavy natural abscission of mature fruits.The present experiment was intended to reduce this problem and consequently expanding the harvest season, improving fruit marketing.During the period 2000/03 effects of the plant growth regulators (PGRs) o­n senescence and incidence of pre-harvest fruit drop of blood oranges were studied in field experiments.

The best effects of 2,4 D, 2,4 DP, triclopir (32 to 10 ppm) and GA (9 ppm) for to delay and reduce unwanted fruit abscission and senescence of“Torocco” blood orange were achieved when spray has been applied o­n October through December.At harvest residue was researched but it was not detected, however at this moment in Italy for citrus, the o­nly authorized pre harvest PGRs are GA and triclopir.