Mechanical harvesting losses in rice crop using combin harvester
El-Nakib, A. A.
Mechanical harvesting losses in rice crop using combin harvester [electronic resource]. دراسة فاقد الحصاد الآلي في محصول الأرز باستخدام جامعة الحبوب. - p.889-906.
Includes references.
An evaluation was carried out using Kubota Combine (Pro 481) as a mechanical harvester of rice (Sakha 102). The grain moisture content was varied at (23.8, 19.3 and 6.5%). Forward speeds were (2.3.27,4.5 and 5.14 km/h) and air fan velocities (22.2,25.3, and 27.6). The were previous factors studied and evaluated on combine losses (as header, threshing, separating and shoe losses). The field experiments were carried out at Hammour vilIage, Damanhor, Behara Governorate, Egypt during agricultural seasons of 1999-2000 and 2000-2001. The main objectives of this study were to determine the optimum operating conditions as time of harvest, forward speed and air fan velocity for adjusting the combine machine in order to obtain the minimum losses. The results_ show that: - Header, threshing, separating and shoe losses increase with increasing of the forward speed and the decrease of grain moisture content. - The shoe losses increase (From 0.24 to 1.05%) with the increase of air fan velocity (from 6.17 to 7.67 /ls). - The total Joss "TL", forward speed "S" and grain moisture content "GMC" were formulated by the formula "TL = (10.5 GMC-O.79) SO.76 (under previously mentioned condition). - The optimum operating harvesting rice crop was at combine forward speed 4.5 km/h and grain moisture content of 16.5%. - The optimum air fan velocity during operating harvesting rice was 6.17 m/s.
Summary in Arabic.
Rice--Harvesting--Machinery.
Grain--Losses.
Harvesting machinery.
Crop losses.
Mechanical harvesting losses in rice crop using combin harvester [electronic resource]. دراسة فاقد الحصاد الآلي في محصول الأرز باستخدام جامعة الحبوب. - p.889-906.
Includes references.
An evaluation was carried out using Kubota Combine (Pro 481) as a mechanical harvester of rice (Sakha 102). The grain moisture content was varied at (23.8, 19.3 and 6.5%). Forward speeds were (2.3.27,4.5 and 5.14 km/h) and air fan velocities (22.2,25.3, and 27.6). The were previous factors studied and evaluated on combine losses (as header, threshing, separating and shoe losses). The field experiments were carried out at Hammour vilIage, Damanhor, Behara Governorate, Egypt during agricultural seasons of 1999-2000 and 2000-2001. The main objectives of this study were to determine the optimum operating conditions as time of harvest, forward speed and air fan velocity for adjusting the combine machine in order to obtain the minimum losses. The results_ show that: - Header, threshing, separating and shoe losses increase with increasing of the forward speed and the decrease of grain moisture content. - The shoe losses increase (From 0.24 to 1.05%) with the increase of air fan velocity (from 6.17 to 7.67 /ls). - The total Joss "TL", forward speed "S" and grain moisture content "GMC" were formulated by the formula "TL = (10.5 GMC-O.79) SO.76 (under previously mentioned condition). - The optimum operating harvesting rice crop was at combine forward speed 4.5 km/h and grain moisture content of 16.5%. - The optimum air fan velocity during operating harvesting rice was 6.17 m/s.
Summary in Arabic.
Rice--Harvesting--Machinery.
Grain--Losses.
Harvesting machinery.
Crop losses.