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TY - JOUR AU - Alhassan, Nasiru AU - Isah, Umar Abdullahi AU - Abdulai, Adams AU - Mohammed, Tanko PY - 2024/11/12 Y2 - 2025/09/23 TI - Postharvest treatment of navel oranges with fluroxypyr, 2-methyl-4-chlorophenoxyacetic acids, and 2,4-dichlorophenoxyacetic maintains physiological quality during ambient storage JF - Journal of Aridland Agriculture JA - jaa VL - 10 IS - SE - Articles DO - 10.25081/jaa.2024.v10.8901 UR - https://www.updatepublishing.com/journal/index.php/jaa/article/view/8901 SP - 142-149 AB - <p>Two batches of Green mature Navel oranges with calyxes attached were obtained from a farmer from Juaben Municipality in the Ashanti region of Ghana and were dipped for 2 minutes with fluroxypyr, and 2-methyl-4-chlorophenoxyacetic acid (MCPA), were assessed against the commercial 2,4-D at 0.1 and 0.2 mmol L^-1 stored under ambient conditions (24±2 °C and 55-60% RH) for 4 weeks. The results showed that pre-storage dipping with fluroxypyr was the most effective in suppressing endogenous ethylene production and respiration rate, reduced calyx changes, and fruit rot, and retained fruit sensory attributes compared with MCPA 2,4-D, or untreated fruit at the end of storage life of four weeks. The effect of 2,4-D and MCPA on fruit rot, calyx browning, abscission, and fruit internal quality, was similar; which was not significantly different during storage. Dipping fruit with 0.1 mmol L-1 fluroxypyr was more effective in maintaining the quality of oranges and could be a substitute for current commercial 2,4-D.</p> ER -