Effect of Harvesting Time on Milling Properties of Tarom Hashemi and Gohar Rice Varieties

doi:10.22092/erams.2017.112998

Document Type : Original Article

https://doi.org/10.22092/erams.2017.112998

Abstract

Suitable harvesting time reduces the losses in the field and also milling stage. This research evaluated the effect of different harvesting times on milling properties of two paddy varieties (Hashemi and Gohar) that was conducted at Haraz technology development center (Iran). The harvesting was started when the moisture of paddy was 23% w.b (85 and 115 days after transplanting for Hashemi and Gohar varieties respectively) and continued until shattering was occurred for both varieties. Totally, the harvesting was done at nine times. Results showed that the effect of harvesting time has significant effect (P<0.01) on fissured kernels, chalky kernels, hardness, milling ratio, milling degree and white rice Percent. Also maximum milling ratio (53.9%) and white rice Percent (40.7%) was in sixth harvest time for Hashemi variety with 18.3% moisture content (93 days after transplantation) but for Gohar variety is not significant. therefore the The most appropriate harvesting time in terms of its milling ratio and white rice Percent was 92-95 days after transplantation for Hashemi paddy variety and 121-124 days after transplantation for Gohar paddy variety.

Keywords

References

Anon. 2004. Food and Agriculture Organization, FAO. Rice is Life. Italy: FAO.

Bautista, R. C. and Siebenmorgen, T. J. 2005. Individual rice kernel moisture content variability trends. App. Eng. Agric. 21(4): 637-643.

Farouk, S. M. and Islam, M.N. 1995. Effect of parboiling and milling parameters on breakage of rice grains. AMA. 26(4): 33-38.

Firouzi, S. and Alizadeh, M. R. 2013. An investigation of the effects of harvesting time and milling moisture content of paddy on the quality of milled rice. Int. J. Biosci. | IJB | ISSN: 2220-6655 (Print) 2222-5234.

Gilani, A., Alami, Kh., Siadat, A. and Seiednezhad, M. 2012. The effects of heat stress on milling quality of rice cultivars in Khuzestan. J. Crop Physiol. Islamic Azad University of Ahvaz. Fourth year, number fourteenth. (in Persian).

Hashemi, J., Borghei, A., Shimizu, N. and Kimura, T. 2005. Optimization of final moisture content of paddy in flat bed dryer with consideration of minimum losses and marketability. J. Agric. Sci. Nat. Resour of Khazar. 3(2): 72-82.

Kimura, T. 1991. Effects of processing conditions on the hardening characteristics of parboiled grain. J. Soc. Agric. Struct. Japan. 22, 49-54.

Koutroubas, S. D., Mazzini, F., Pons, B. and Ntanos, D. A. 2004. Grain quality variation and relationships with morpho-physiological traits in rice (Oryza sativa L) genetic resources in Europe. Field Crops Res. 86, 115-130.

Lu, R., Sibenmorgen, T. J., Costello, T. A. and fryar Jr. E. O. 1995. Effect of rice moisture content at harvest on economic return. Trans. ASAE. ll(5):685-690.

Malik, A., Majid, A. and Ahmad, S.1981. Effect of harvesting time and drying method on paddy yield and milling quality in different varieties. Pakistan J. Agric. Res. 2(1): 7-12.

Matthews, J., Abadie, T.J., Deobald, H.J. and Freeman, C.C. 1970. Relation between head rice yields and defective kernels in rough rice. Rice J. 73(10):6-12.

Ntanos, D., Philippou, N. and Hadjisavva-Zinoviadi, S. 1996. Effect of rice harvest time on milling yield and grain breakage. Cahiers Options Méditerranéennes. 15(1): 23-28.

Peng, S., Huang, J., Sheehy, J., Laza, R. C., Visperas, R. M., Zhong, X., Centeno, G. S., Khush,G. S. and Cassman, K.G. 2004. Rice yields decline with higher night temperature fromglobal warming. Proc. Natl. Acad. Sci. USA. 101, 9971-9975.

Qin, G. and Siebenmorgen, T.J. 2005. Harvest location and moisture content effects on rice kernel-to-kernel breaking force distributions. Transactions of the ASAE. 21(6): 1011-1016.

Siebenmorgen, T. J., Perdon, A. A., Chen, X. and Mauromoustakos, A. 1998. Relating rice milling quality changes during adsorption to individual kernel moisture content distribution. Cereal Chem. 75(1): 129-136.

Siebenmorgen, T.J., Bautista, R.C. and Counce, P.A. 2007. Optimal harvest moisture contents for maximizing milling quality of long- and medium-grain rice cultivars. Trans. ASABE. 23(4): 517-527.

Siebenmorgen, T.J., Cooper, N.T., Bautista, R. C., Counce, P. A., Wailes, E. and Watkins, K. B. 2008. Estimating the economic value of rice (oryza sativa l.) As a function of harvest moisture content. Transactions of the ASABE. 24(3): 359-369.

Zamani, Gh. and Alizadeh, M.R. 2007. Properties and Processing of Iranian Rice Varieties. (Ver. 2). (in Persian).

Agricultural Mechanization and Systems Research

Effect of Harvesting Time on Milling Properties of Tarom Hashemi and Gohar Rice Varieties

References

References

Volume 17, Issue 67
March 2017
Pages 29-40

Effect of Harvesting Time on Milling Properties of Tarom Hashemi and Gohar Rice Varieties

References

References

Volume 17, Issue 67March 2017Pages 29-40

Volume 17, Issue 67
March 2017
Pages 29-40