EFFECTS OF SHAKING MODE, FREQUENCY AND AMPLITUDE ON 'SHAHANI' DATE FRUIT DETACHMENT, II: FIELD EXPERIMENT

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LOGHAVI M.; ABOU NAJMI M.

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Journal: Iran Agricultural Research Year:2002 | Volume:21 | Issue:1 Page(s): 1-14

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Title

EFFECTS OF SHAKING MODE, FREQUENCY AND AMPLITUDE ON 'SHAHANI' DATE FRUIT DETACHMENT, II: FIELD EXPERIMENT

Author(s)

LOGHAVI M. | ABOU NAJMI M. | Issue Writer Certificate

Keywords

BUNCH SHAKERQ3

DATE HARVESTINGQ3

FRUIT DETACHMENT ‘SHAHANI’ DATESQ3

SHAKINGQ3

Abstract

One of the major problems in date (Phoenix dactylifera L.) harvesting is variable maturity. Selective hand-picking of individual rjpe fruits from each bunch is the most expensive and time consuming cultural operation. A 2 x 5 x 3 factorial experiment with a completely randomized design in three replications was conducted to investigate the effects of sbak.ng mode, frequency and amplitude on date fruit detachment. Five levels of SHAKING frequency (200, 300, 450, 600 and 750 cpm) and three levels of SHAKING amplitude (20, 40 and 60 mm) were investigated it two modes of fruit hunch vibration (vertical and banging).The experiment was conducted on 'Shahani' dates fruit bunches. The effects of SHAKING mode, frequency and amplitude were significant on fruit detachment. The most effective detachment of ripe fruits with minimum unripe fruit detachment occurred at 300cpm frequency and 60 mm amplitude. Also the results showed that the vertical SHAKING mode was more effective in detaching ripe fruits than hanging mode and in the vertical SHAKING mode the amount of detached fruits with calyx attached was less than in the hanging mode. The amount of detached fruits without calyx attached increased at the higher frequency and amplitude levels. Fruit pull tests showed that the average axial tensile force required to remove ripe fruits was about 35% of that needed for removing unripe fruits. BUNCH SHAKER was capable of removing marketable ripe dates from the bunch without imparting any significant rubbing of bruising damage to fruits.

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APA: Copy

LOGHAVI, M., & ABOU NAJMI, M.. (2002). EFFECTS OF SHAKING MODE, FREQUENCY AND AMPLITUDE ON 'SHAHANI' DATE FRUIT DETACHMENT, II: FIELD EXPERIMENT. IRAN AGRICULTURAL RESEARCH, 21(1), 1-14. SID. https://sid.ir/paper/16088/en

Vancouver: Copy

LOGHAVI M., ABOU NAJMI M.. EFFECTS OF SHAKING MODE, FREQUENCY AND AMPLITUDE ON 'SHAHANI' DATE FRUIT DETACHMENT, II: FIELD EXPERIMENT. IRAN AGRICULTURAL RESEARCH[Internet]. 2002;21(1):1-14. Available from: https://sid.ir/paper/16088/en

IEEE: Copy

M. LOGHAVI, and M. ABOU NAJMI, “EFFECTS OF SHAKING MODE, FREQUENCY AND AMPLITUDE ON 'SHAHANI' DATE FRUIT DETACHMENT, II: FIELD EXPERIMENT,” IRAN AGRICULTURAL RESEARCH, vol. 21, no. 1, pp. 1–14, 2002, [Online]. Available: https://sid.ir/paper/16088/en

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