Mechanical Harvesting of Guar .II. Harvesting Methods and Associated losses.

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Mohamed, M. E. A.
Mohamed, A.E.
Ahmed, M. A.
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Faculty of Agriculture, University of Khartoum, Shambat, Sudan
Grain losses resulting from the use of two guar mechanical harvesting methods, viz. direct combining and windrow combining, were evaluated over two seasons (1992/93 and 1993/94). Net and gross yields, harvest losses (preharvest, gathering, total discharge and total losses) as well as impurities in grain tank were determined and analysed. Harvest methods had a significant effect on gathering, walker and total losses, net yield and impurities in both seasons, as well as shoe losses and gross yield in the first season and total discharge losses in the second season. Gathering losses and impurities were highly significant in windrow combining, thus markedly reducing both quantity and quality. Total discharge loss and its components were slightly greater in direct combining but none of them exceeded the acceptable limit of 1% of gross yield.
Page(s): 4 (1), 14-26, 16 Ref.
Gross yield, direct combining, windrow combining and Grain losses.