Impact of foliar application of growth regulators on fruit splitting, yield and quality of daisy mandarin (Citrus reticulata)
KOMALPREET KAUR | MONIKA GUPTA | H S RATTANPAL | T S CHAHAL | GURTEG SINGH
The experiment was conducted during 2021 and 2022 at the Fruit Research Station, Jallowal-Lesriwal, Jalandhar (Punjab Agricultural University), Punjab to study the effect of foliar application of growth regulators on fruit splitting, yield and quality of Daisy mandarin (Citrus reticulata Blanco). The different concentrations of gibberellic acid (GA3) (10, 20 and 30 ppm), naphthalene acetic acid (NAA) (10, 20 and 30 ppm), ethephon (10, 20 and 30 ppm) and salicylic acid (SA) (100 and 200 ppm) along with control were applied at different developmental stages of Daisy mandarin. The results revealed that the application of salicylic acid at 100 ppm effectively mitigated the severity of fruit splitting in Daisy mandarin during both the seasons and highest fruit weight, number of fruits and maximum fruit yield were observed with foliar application of GA3 at 10 ppm. Regarding the fruit quality attributes including total soluble solids, ascorbic acid, juice and flavonoid content, exhibited superior results with the application of 10 ppm GA3 as compared to untreated plants. The results suggested that application of 10 ppm GA3 and 100 ppm salicylic was effective in enhancing fruit quality attributes and reducing the incidence of fruit splitting in Daisy mandarin.
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