J. Bio. Env. Sci.12(6), 51-56, June 2018
Almond is one of the most important agricultural products in Iran. Its export transfers a considerable foreign currency to the country. In production of almond, Iran has in the third rank in the world after USA and Spain. To mechanize the harvest of almonds, it is important to know which varieties are suitable for mechanized harvesting, so for the first time this research was done. In order to comparison detachment percent of fruit and determine suitable cultivars for mechanized harvesting of Almond, a 4×4×4 factorial experiment were conducted base on complete randomized design in three replications. Four levels of shaking amplitude (10, 20, 30 and 40 mm) and four levels of frequency (10, 15, 20 and 25 Hz) were investigated with 4 almond cultivars (Shokufeh, Nonpareil, Azar, and Ferragnes,) in Sahand Horticultural Research Station of East Azarbijan. Trees were shacked by a mechanical trunk shaker. Analysis of variance and mean comparison showed that the effect of shaking amplitude and frequency on cultivars were significant in fruit detachment. It was found that the most effective detachment of fruit was happened at 40 mm amplitude and 20 Hz frequency. In addition, the results showed that the amount of fruit detachment increased at the higher amplitude and frequency levels. The results of this research also indicated that “Ferragnes” had maximum with 28.71% and “Shokufeh” had minimum fruit detachment with 15.62%, and the “Ferragnes”with 28.71%, “Nonpareil” with 26.8% and “Azar” with 26.71% were more suitable for mechanical harvesting than “Shokufeh”.
Abonajmi M. 1999. Design and manufacture of a laboratory scale vibrator inorder to evaluation of form. amplitude and frequency of vibration on date fruit detachment. Ms thesis. Agricultural faculty. Shiraz university.
Ahmadi KH, Gholizadeh HR, Ebadzadeh. 2017. Agricultural fact files Ministry of Jihad-e-Agriculture. Deputy Director of Planning and Economics. ICT Center.
FAO. 2018. FAOSTAT database. http://faostat.fao.org/faostat.
Fridley RB. Hartmann HT, Mehlschau JJ, Chen P, Whisler J. 1971. Olive Harvest Mechanization in California. Division of agricultural sciences. University of California.
Golpira H. 1998. Design, manufacture and evaluation of tree shaker inorder to evaluation effect of amplitude and frequency of vibration on olive fruit detachment. Msthesis. Agricultural faculty. Shiraz university.
Gurusinghe SH, Shackel KA. 1995. Effect of ethephon (2-chloroethyl phosphonic acid) on vascular cambial strength of almond tree trunks. Journal of the American Society for Horticultural science. 120 (2),194–198.
Horvath E, Sitkei G. 2001. Energy Consumption of Selected Tree Shakers Under Different Operational Conditions. Journal of agricultural engineering research.Volume 80.Issue 2.pages,191-199.
Kader A, Adel. 1985. Post harvest handling systems: Tree nuts. [Quated in “Postharvest Technology of Horticultural Crops “.Cooperative Extension. University of California. Division of agriculture and natural resources. USA]. 170-173.
Kepner RA, Bainer R, Barger BL. 1982. Principles of Farm Machinery. AVI publishing company. INC. USA.
Khatamsaz M. 1992. Iran flora.No.6. Rosacae. Research Institute of Forest and Rangelands (in Farsi).
Mobli H. 1997. Determination of fruit and cluster detachment percentage in ten varieties of pistachio using a mechanical shaker. Agricultural Science of Iran. 30(1).
MobliH,TavakoliT, Rostami MA.1999. Determination of biomechanical properties on pistachio mechanized harvesting. Ph.D. dissertation. Agricultural faculty. Tarbiat Modares University.
Mosavizadeh SA. 1997. Almond, Agri-Jehad Organization of East Azarbijan. Issue 524.
O’brin M, Cargil BF, Fridley RB. 1983. Principels and Practices for Harvesting and Handling Fruits and Nuts. AVI Publishing company.INC. Westport. Connecticut. USA.
Parchomchuk P, Cooke J, Robert. 1972. Vibratory Harvesting: An Experimental Analysis of Fruit-Stem Dynamics. Transactions of the American society of agricultural and biological engineers. 15(4), 598-603.
Polat R, Guner M, Dursun E, Erdogan D, Gezer I, BiimI. 2007. Mechanichal harvesting of Almond with an inertia type Limb shaker. Asian tournal of plant sciences 6(3), 528-532.
Porat A, Spiegel Royp. 1990. Factors affecting the detachment of almond fruits. Alon-Hanotea. 44(10), 901-912.
Rezaei A. Loghavi M, KamgarS. 2016. Mechanical harvesting of wild Almond (Amygdales scoparal) by a pneumatic branch shaker. International journal of advances in Agricultural science and technology 3(2), April-Pg,01-15.
Saiki T. 1999. Commission Internationale de Génie Rural Hand book of Agricultural Engineering. 3, Plant Production Engineering. Published by the American society of agricultural and biological engineers.
Sonke D, Browde J, Ludwig G. 2002. Integrated pest management for Almonds. 2nd edition.University of California.riverside Integrated Pest Management Project. Division of Agriculture and Natural Resources. Publication 3308.
Whitney JD, Hartmond U, Kender WJ, Burns JK, Salyani M. 1999. Orange Removal with Trunk shaker and Abscission Chemicals. The American society of agricultural and biological engineers Paper No. 991078. 9p.
Whitney JD, Bensalem E, Salyani M. 2001. The effect of Trunk Shaker pattern on Florida Orange Removal. American society of agricultural and biological engineers Paper No. 991078. 9p.
Zabolestani M. 2004. Determination of almond fruit vibratory resistance and Its tree dynamic simulation. Ph.D. dissertation. Agricultural faculty. Tehran University.