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Title

EFFECTS OF HARVESTING DATE ON NUT CHARACTERISTICS OF PERSIAN WALNUT IN ESTAHBAN, FARS PROVINCE, IRAN

Writers

SAADAT Y.A. | ZANDI P.

Pages

 Start Page 275 | End Page 284

Abstract

 This research was conducted to investigate the effects of HARVESTING DATE on nut characteristics of Persian walnut (Juglans regia L.). The treatments of experiment were four different dates of harvesting including 5th, 12th, 19th and 26th August 2008. The experiment was laid out as a completely randomized design with 45 replications, with each replication containing 20 nuts harvested from different sides of a mature Persian walnut tree with more than 15 years old. Trees were selected randomly from an orchard originating from seeds. Based on the results obtained in this study there was no significant difference among different HARVESTING DATEs for length, diameter, width and shell thickness of nuts. Average nut dry weight of those nuts harvested on 5th August was significantly less than those harvested on 12th or 26th August. The percentage of harvested nuts with dehiscent husk on 26th August was significantly greater than those of other HARVESTING DATEs. 80.39% of nuts that harvested on 29th August had light kernels and significantly less than other dates of harvesting. Maximum KERNEL PERCENTAGE and average kernel dry weight was belonged to nuts that harvested on 29th August and significantly greater than those harvested at other dates. It was concluded from this study that the best index for walnut HARVESTING DATE is when packing tissues color of kernel turned from white to brown and husk dehiscence is not a reliable index for HARVESTING DATE of Persian walnut.

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