University of Khartoum

Effect of Combine Harvester Forward and Reel Speeds on Sunflower Harvesting Losses in Gadarif Area (Sudan)

Effect of Combine Harvester Forward and Reel Speeds on Sunflower Harvesting Losses in Gadarif Area (Sudan)

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Title: Effect of Combine Harvester Forward and Reel Speeds on Sunflower Harvesting Losses in Gadarif Area (Sudan)
Author: Habib, Elfatih Mohammed Abaker
Abstract: This study was conducted during 2013-2014 season in Gadarif mechanized schemes at Azaza Sagora (Ombelail village), Gadarif State, about 45 km South East of Gadarif town, to determine the effect of combine harvester forward speed and reel speed on sunflower harvesting losses (total machine, header and processing losses). The experimental was arranged in a randomized complete block design with three replicates, three levels were used for the combine harvester forward speed (8 km/h, 6 km/h and 4 km/h), and three levels of reel speed (40 rpm, 30 rpm and 20 rpm). Levels of the other technical adjustments were kept constant (cylinder speed, cylinder-concave clearance, sieve opening and fan speed). Results showed that the highest processing loss 10.81 kg/fed was recorded for the forward speed of 8 km/h followed by 9.95 kg/fed for the forward speed 6 km/h, while the forward speed 4 km/h recorded the lowest processing loss (9.17) kg/fed. The highest machine loss 4.51% was recorded for the forward speed 8 km/h followed by 4.33% for the 4 km/h forward speed whereas 6 km/h speed recorded the lowest loss 4.21%. The results also showed that high header loss was recorded for the reel speed 40 rpm 8.15 kg/fed compared to 4.05 kg/fed and 4.39 kg/fed under speed 30 rpm and 20 rpm respectively. Combine reel speed gave significant effect on harvesting losses, while the forward speed gave no significant effect. From observation the lowest losses were obtained under the forward speed 6 km/h and 30 rpm reel speed.
URI: http://khartoumspace.uofk.edu/123456789/16121
Date: 2015-09-15


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