The effects of paclobutrazol (12.5, 25.0,
50.0, and 100.0 ppm) and ethephon (100, 200, 400, and 800 ppm) on the
growth and yield of P. peruviana were studied in Allahabad, Uttar
Pradesh, India. The growth retardants were sprayed to seedlings at 21
days after transplanting. Paclobutrazol at 50 ppm and ethephon at 400
ppm increased plant height, number of leaves, number of branches, fruit
set, fruit size, fruit weight, number of fruits per plant, and yield per
hectare, but reduced leaf area. Both chemicals at higher rates reduced
yield and plant height.
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