época e princípios ativos para a quebra de dormência de caquizeiro cv. Fuyu

摘要

This work aimed to rise fruit market period and search options to stimulate bud break, evaluating three dates and different active ingredients in bud break of persimmon 'Fuyu'. Mineral oil, hydrogen cyanamide (CH), micro and macronutrients mixture were tested in three application dates in a factorial scheme with 5 treatments and 3 application dates. The traetments were: T1-control, T2- 0.5 % OM, T3-: 2 % CH + 0.5 % OM, T4- 1 % micronutrients + 0.2 % macronutrients + 0.5 % OM; T5- 2 % micronutrients + 0.2 % macronutrients + 0.5 % OM. It was analyzed the number of sprouts per branch, the sprouting percentage, the number of branches with sprouts, and the number and fruits production per plant. Bud break anticipation reduced fruits number in South Center region of Paraná. Fruit production was directly proportional to budburst in the first sprout cycle. CH application promotes budburst anticipation and raises persimmon fruits production, mineral oil and nutrients mixtures did not influence on budburst and production benefits.