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Effects of Molybdenum Seed Treatments on Germination of Soybeans¹

Seed of Glycine max (L.) Merr., ‘Hill’ and ‘Hampton,’ were treated with 1 and 4 ounces of ammonium molybdate, molybdic acid, sodium molybdate, and "Moly-Gro" per 60 pounds of seed to study effects of molybdenum sources on germination. Ammonium molybdate rates ranging from 1/4 to 8 ounces per 60 pounds of seed were applied to seed of Hill, ‘Hood,’ Hampton, and ‘Jackson’ to study the reaction of varieties to molybdenum treatment. Material was dissolved in water and germination of treated samples was compared to that of wet and dry checks. Seed were sampled periodically for as long as 1 year in storage at two locations. Neither sources of molybdenum nor rates of ammonium molybdates up to 8 ounces per 60 pounds of seed caused germination losses of practical importance. High atmospheric humidity and poor quality seed were associated with an accelerated loss of germination. Wetting seed with 1/2 pint of water per 60 pounds of seed was associated with accelerated loss in germination in one experiment. These data indicate that soybean seed could be safely treated with molybdenum during the seed cleaning operation.

² Assistant and Associate Agronomist, respectively, Georgia Experiment Station, Experiment; Assistant Agronomist, Georgia Mountain Experiment Station, Blairsville; and State Seed Analyst, Georgia Department of Agriculture Seed Laboratory, Atlanta.

Received for publication April 9, 1966.