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Germination Response of Barley Following Different Harvesting Conditions and Storage Treatments¹

The effects of harvest date and aerated and nonaerated damp storage over a period of time on the viability of three barley varieties were observed. The study included three storage moisture levels for one variety and two levels for another variety during a second year. Grain of different moisture contents was periodically sampled and germinated. Date of harvest influenced germination greatly, with later harvests showing successive reductions in germination. The samples from the first harvest showed a lower germination than those from the second harvest and were more subject to germination reduction at 18% storage moisture than more mature grain. The ‘Oderbrucker’ variety appeared to resist weathering better than ‘Traill’ or ‘X691-1’. Grain at high storage moisture showed more damage when not aerated than when aerated.

Key Words: storage moisture • harvest dates

² Professor of Agronomy and former research assistant, Department of Agronomy, University of Wisconsin; Research Chemist, National Barley and Malt Laboratory, ARS, USDA (Madison, Wisconsin).

Received for publication November 16, 1966.