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Conditioning Dry Bean Seed (Phaseolus vulgaris L.) for Better Processing Quality and Seed Germination¹

Bean windrows were sprayed with water to prolong or induce seedcoat toughening that protected the beans from cracking during combining without appreciably increasing their percentage moisture. After combining, the desired amount of moisture was added by mixing a suitable quantity of dampened sawdust with the beans and screening after various intervals. This would protect the beans during the processes of unloading, conveying, screening, and binning. With undesirably dry beans in the bin, moisture was added by circulating warm air at a relative humidity of about 75%. Seed beans, too dry to be drilled without damage to germination, were toughened with damp sawdust and seedling emergence was greatly improved. Damage incurred during combining was not nullified by later conditioning, but further damage could be prevented.

² Professor of Crop Science.

Received for publication June 9, 1966.