RESPONSE OF SOME RICE VARIETIES TO MECHANICAL HARVESTING BY COMBINE HARVESTERS | ||||
Zagazig Journal of Agricultural Research | ||||
Volume 37, Issue 3, May and June 2010, Page 715-738 PDF (944.37 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/zjar.2010.317696 | ||||
View on SCiNiTO | ||||
Authors | ||||
Amira M. N. Ibrahim 1; M. K Abdel-Wahab1; M. A. I. Arnaout2; M. M. A. El-Sharabasy2 | ||||
1Agric. Eng. Dept., Fac. Agric., Zagazig Univ., Egypt. | ||||
2Agric. Eng. Dept., Fac. Agric., Zagazig Univ., Egypt | ||||
Abstract | ||||
Field experiments were carried out during the agricultural seasons of 2007 and 2008 at Kafr El-Hamam farm, Sharkia governorate to investigate the response of two rice varieties (Sakha-101 and Giza-178) to mechanical harvesting using two combine harvesters (Yanmar and Claas) at four average forward speeds of 0.5, 1.2 , 1.9 and 3.1 km/h and four average grain moisture contents of 15, 18, 21 and 25%. The results obtained reveal that, the minimum total grain losses were 2.70 and 3.9%; 2.76 and 3.0% at average grain moisture content of 15% and forward speed of about 1.2 km/h, using Yanmar and Claas combines to harvest rice crop (Sakha-101 and Giza-178) varieties respectively. The maximum field capacity values were 0.97and 2.72 fed/h ; 0.94 and 2.60 fed/h at average grain moisture content of 15% and forward speed of about 3.1 km/h, using Yanmar and Claas combines to harvest rice crop (Sakha-101 and Giza-178) varieties, respectively. The maximum cutting efficiencies (%) and the minimum specific energy consumed values (kW.h/fed) were (92.7 and 93.7 % ; 91.6 and 90.5 %) and (14.62 and 8.45 kW.h/fed ; 21.26 and 9.38 kW.h/fed) at average grain moisture content of 15% and forward speed of about 0.5 km/h, using Yanmar and Claas combines to harvest rice crop (Sakha-101 and Giza-178) varieties, respectively. The minimum criterion cost values for harvesting both rice crop varieties (Sakha-101 and Giza-178) were 263.00 and 331.60 L.E/fed ; 236.6 and 251.8 L.E/fed at average grain moisture content of 15% and forward speed of about 0.5 km/h, using Yanmar and Claas combines to harvest rice crop (Sakha-101 and Giza-178) varieties, respectively. | ||||
Keywords | ||||
Harvesting; field capacity; field efficiency; power required; specific energy consumed; harvesting cost | ||||
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