Produ？？o da amoreira-preta 'Tupy' sob diferentes épocas de poda

the blackberry is an important option to fruit growers in paraná state. however, there aren't trials performed in subtropical area in that state. the objective of this research was to evaluate the pruning time effects at season production of 'tupy' blackberry. the research was conducted in a commercial orchard, in an agroecological system. the experimental design was randomized blocks with four blocks and six treatments (pruning time by fifteen days during the winter pruning). in each plot, which was consisted of three plants, it was collected phenological, productive and physical-chemical production cycle in 2008/09 and 2009/10. pruning made in early july are the most suitable and late pruning can harm the productive performance of blackberry 'tupy' in western paraná.