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Aspects of Structure that Affect Germination in a Silt Loam Soil¹

ABSTRACT

Stability of aggregates to slaking, as determined by wetsieve analyses, failed to account for differences in structural quality between naturally stable and chemically stabilized Christiana silt loam. The treated and untreated soils were equally resistant to slaking, but permeability and seed germination were better in the treated soil. These differences were related to differences in the consistency of the moist aggregates.

¹ Contribution from the Division of Soil Management, BPISAE, U. S. Dept. of Agriculture. Presented before Division VI, Soil Science Society of America, Nov. 18, 1953.

² Soil Conservationist, BPISAE, and Associate Soil Scientist, National Federation of Coffee Growers, Colombia, respectively.

Received for publication November 27, 1953.