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Change the content of nitrogen in productive branches of persimmon

The objective was to evaluate the change in content of nitrogen in productive branches of persimmon (Diospyros kaki L.) to nitrogen fertilization. The experiment was conducted in a commercial orchard in the municipality of Faxinal, state of Paraná, in geographical coordinates S 23 º 57 '35'', W51 ° 13'34'', altitude of 999 meters. The cultivar studied was "Giombo. 9 was used treatments, and a control without application of nitrogen (N), and the remainder resulting from the application in time of physiological maturity of fruits, pruning the top, end of flowering and 15/12/06 and combined with two doses of N (80 and 160 kg / ha)." The experimental design was a randomized blocks and 4 replications. The experimental plot was composed of 3 plants, the plant used for central assessment. Every forty-five days after fertilization were randomly taken from each treatment eight productive branches in different parts of the plant.. The leaf's treatment IP and MF showed the highest concentration of N in the spring and summer. And one decrease in the end of cycle before of leaf fall and in the branch of all treatments resulted in similar levels of N in the end o cycle. The time of pruning the top resulted in the smallest levels of N in both application of N.

Diospyros kaki L.; Nitrogen fertilization; Time of application of N; Temperate Fruits


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