EFFECT OF DEFICIT IRRIGATION ON THE ELASTIC PROPERTIES OF TOMATO FRUITS | ||
| Misr Journal of Agricultural Engineering | ||
| Article 5, Volume 34, Issue 4, October 2017, Pages 1581-1600 PDF (756.34 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjae.2017.95830 | ||
| Authors | ||
| Ahmed M. Hassan; Mohamed M. Ibrahim | ||
| Associate Prof., Ag. Eng. Dept., Fac. of Ag., Cairo Univ., Egypt. | ||
| Abstract | ||
| The aim of this research work was to determine the physical and elastic properties of tomato fruits (Lycopersicon esculentum) cv under four water regimes (ET100, ET90, ET80 and ET70 of water requirements) to develop a technique that canpredict the packing height to protect fruits from mechanical damage.The physical properties of tomato include mass, volume, dimensions, bulk density, soild density and geometric mean diameter. The elastic properties of tomato fruit include Young's modulus of elasticity (E), firmness coefficient (FC), bioyield stress (σb), bioyield strain (εb), rupture stress (σr), rupture strain (εr) and rupture energy (RE). The results showed that the different water regimes have a significant effect on physical and elasticity properties.The values of E, FC, σb and RE were increased with decreasing water level, while, σr was increased with increasing water level. Accordingly, the maximum heights of packing box were 177.4, 353.6, 456.5 and 526.4 mm for ET100, ET90, ET80 and ET70, respectively. | ||
| Keywords | ||
| Tomato; deficit irrigation; elasticity; modulus; bioyield; rupture; and stress | ||
| References | ||
|
Abbott, J. A. and D. R. Massie. 1995. Non-destructive dynamic force/deformation measurement of kiwifruit firmness (Actinidia Delicious). Trans. ASAE, 38(6): 1809 – 1812.
Abbott, J. A. and R. Lu. 1996. Anistropic mechanical properties of apples. Trans. ASAE, 39(4): 1451 – 1459.
Allen, R.G.; L.S. Pereira; D. Raes and M. Smith, 1998. Crop evapotranspiration. Guidelines for computing crop water requirements. FAO irrigation and Drainage. Paper No. 56, FAO, Rome, Italy, pp: 300. Allende, A., M. Desmet, E. Vanstreels, 2004. Micromechanical and geometrical properties of tomato skin related to differences in puncture injury susceptibility. Postharvest Biol. Technol., 34: 131- 141.
Altisent, M.R. 1991. Damage mechanisms in the handling of fruits: Progress in agricultural physics and engineering. John Matthew (Ed.), Commonwealth Agricultural Bureaux (CAB) International, Willingford, UK, pp. 231-255.
Anazodo, U. G. N. and E. R. Norris. 1981. Effects of genetic and cultural practices on the mechanical properties of corncobs. J. Agr. Eng. Res., 26: 97 – 107.
Anazodo, U. G. N. and S. C. Chikwendu. 1983. Poisson’s ratio and elastic modulus of radially compressive biomaterials – I: small deformation approximation. Transactions of the ASAE, 26(3): 923 – 929.
AOAC. 1995. Official methods of analysis (16th ed.). Association of Official Analytical Chemists. Wash., DC.
Arab Agricultural Statistics Yearbook. 2009. Plant production. Part 3. Vol. 29.
Bajema, R. W. and G. M. Hyde. 1998. Instrumented pendulum for impact characterization of whole fruit and vegetable specimens, Trans ASAE, 41(5), 1399-405.
Braga, G. C., Couto, S. M., Hara, T., and Neto, J. T. P. A. 1999. Mechanical behaviour of macadamia nut under compression loading. J. Ag. Eng. Res., 72: 239–245.
Burubai, W., E. Amula, R.M. Davies, G. Etekpe. And S.P. Daworiye, 2008. Determination of Poisson’s ratio and elastic modulus of African nutmeg (Monodora myristica). International Agrophysics J., 22: 99-102.
Cenkowski, S., Q. Zhang and W.J. Crerar. 1995. Effect of sorption hysteresis on the mechanical behaviour of canola. Transactions of the ASAE, 38(5): 1455 – 1460.
Dinrifo, R. R. and M. A. Faborode. 1993. Application of Hertz’s theory of contact stresses to cocoa pod deformation. J. Ag. Eng. and Tec., 1: 63 – 73.
FAO 2010. Food and Agriculture Organization of the United Nations. http://www.faostat.fao.org. 16Aug. 2012.
Fecete, A. 1994. Elasticity characteristics of fruits. International Agrophysics, 8(3): 411- 414.
Ghonimy, M. I., and M. A. Kassem. 2011. The elasticity characteristics of palm date. Misr, J. Ag. Eng., 28 (2): 386 – 400. Joshi, D.C.; S.K. Das and R.K. Mukherjee. 1993. Physical properties of pumpkin seeds. Agric. Eng. 54: 219–229.
Khazaei, J. and D. D. Mann. 2004. Effects of temperature and loading characteristics on mechanical and stress relaxation properties of sea buckthorn berries, Part 1: Compression tests. Ag. Eng. I. Ejournal, Manuscript FP 03 011, http//cigr-ejournal.tamu.edu/html/Volume 6, April.
Khoshnam, F., A. Tabatabaeefar, M. Ghasemi Varnamkhasti and A. Borghei. 2007. Mass modeling of pomegranate (Punica granatum L.) fruit with some physical characteristics. Scientia Horticulturae 114: 1, 21-26.
Lien, C.C., C.Y. Ay, C.H. Ting, 2009. Non-destructive impact test for assessment of tomato maturity. J. Food Eng., 91(3): 402-407.
Mohsenin, N. N. 1986. Physical properties of plant and animal materials, 2nd ed. Gordon and Breach Sc. Publishers
Myhara, R. M., Karkalas, J., and M. S. Taylor. 1999. The composition of maturing Omani dates. Journal of the Science and Food Agriculture, 79, 1–6.
Ross, I. J. and G. W. Isaacs. 1961. Forces acting in stacks of granular materials (Part I). Transactions of ASAE, 4(1): 92-96.
Shafiee, S., A. M. Motlagh, A. R. Didar and S. Minaee. 2008. Investigation the effect of skin on mechanical behaviour of apple. J. Food Tec., 6(2): 86 -91.
Shigley, J. E., C. R. Mischke, C. R. and R. G. Budynas. 2008. Mechanical engineering design. MC Graw-Hill, Singapore.
Snedecor, G. A. and W. G. Cochran. 1976. Statistical Method. Iowa State Univ. Press, Ames.
Stroshine R. 1998. Physical Properties of Agricultural Material and Food Products. Dept. of Agricultural Engineering Purdue Univ. Press, West Lafayette. New York, USA, pp. 28
USDA 1991. United States Standards for Grades of Fresh Tomatoes. http://www.ams.usda.gov/standards/tomatfrh.pdf. 3 Jul. 2012. | ||
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