EFFECTS OF GROWTH REGULATORS ON FLOWERING PATTERN, FLOWER SUPPRESSION AND FRUIT SET IN MANGO (MANGIFERE INDICA L. CV. JULIE)

Lennox Andrews and Ubold Le Fook

No 261373, 21st Annual Meeting, September 8-13, 1985, Port of Spain, Trinidad and Tobago from Caribbean Food Crops Society

Abstract: The effects of growth regulator treatments on flowering pattern, flower suppression and fruit set in mature mango trees were examined. Gibberellic acid (100 ppm) suppressed flowering for six weeks, this response being delayed in one trial. Potassium nitrate (20,000 ppm) greatly increased flowering whereas Ethrel (ethephon) at 2000 ppm was not as successful. Planofix (I-naphthylacetic acid, sodium salt) at 20 ppm appeared to increase initial fruit set when applied to inflorescences but this effect was not sustained in the trial. Planofix applied to fruit (l-2cm diameter) caused an 18% reduction in fruit drop which doubled final fruit yield. ----- Se exam ina los efectos de los tratamientos con reguladores de crecimiento en el patron de floraci6n, la supresion de flores y el cuajado de frutos en los arboles maduros de mango. EI acido giberelico, 1000 ppm, suprimi61a floraci6n durante dos meses; sin embargo, hubo una reaccidn retardada en un ensayo. EI nitrato de potasio, 2:0 000 pp~, aurnentd considerablemente la f1oraci6n, mientras que el Ethrel (etef6n), 2 000 ppm, no fue tan exitoso. EI Planofix (I-acido nattilacetico, sal de sodio 20 ppm) aumento' el cuajado inicial de los frutos, cuando se 10aplico a las inflorescencias, pero este efecto no se mantuvo durante el ensayo, La aplicaclon del Planofix a los frutos (l . 2 cm de dill'metro) resulto en una reduccion del 18% en la incidencia de la cafda de frutos, 10 que dobld el rendimiento final de frutos.

Keywords: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 6
Date: 1985-09-08
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Persistent link: https://EconPapers.repec.org/RePEc:ags:cfcs85:261373

DOI: 10.22004/ag.econ.261373

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