Mechanical shelling and combine harvesting of green soybeans

S. W. Mbuvi, J Bruce Litchfield

Research output: Contribution to journalArticlepeer-review


Two green pea shellers and a green pea combine harvester were investigated for their effectiveness in shelling and harvesting green soybeans. The two shellers were a rubber roller-type (Taylor) and a rotary drum-beater type (Sinclair-Scott). The effect of blanching green soybean pods before shelling on shelling efficiency, seed damage, and quality of the shelled product was also studied. Shelling efficiency using the Taylor sheller was 95% and seed damage was 3%. Use of the Sinclair-Scott sheller resulted in 77% shelling efficiency and 7% seed damage. There were significant differences in shelling efficiency, seed damage, FTC texture reading, and Hunter color factor of green soybeans between blanched and unblanched samples; however, these qualities did not differ significantly between blanching times of 1 to 5 min. The harvester investigated was a conventional FMC green pea and lima bean combine. The stripping of pods off the plants by the combine harvester was sufficiently acceptable, seed recovery or seed removal from the pods was 87% while seed damage of the shelled product was 11%, and about 5% estimated field losses during harvest.

Original languageEnglish (US)
Pages (from-to)351-355
Number of pages5
JournalApplied Engineering in Agriculture
Issue number3
StatePublished - May 1994

ASJC Scopus subject areas

  • General Engineering


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