Ecological investigations upon the germination and early growth of forest trees ecologicalinves00boer Year: 1916 Germination of Forest Trees 85 This diagram shows very strikingly the water retaining capacity of these three soils. Not only do sand and gravel hold less mois- ture at the time of watering but they lose a much greater per cent, of it in the course of twenty-four hours than does loam. Diagram showing: n soil moisture per cent, at time of watering; â soil moisture per cent, twenty-four hours later. When we consider the amount of air space in these soils and the amount of soil mo

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Ecological investigations upon the germination and early growth of forest trees ecologicalinves00boer Year: 1916 Germination of Forest Trees 85 This diagram shows very strikingly the water retaining capacity of these three soils. Not only do sand and gravel hold less mois- ture at the time of watering but they lose a much greater per cent, of it in the course of twenty-four hours than does loam. Diagram showing: n soil moisture per cent, at time of watering; â soil moisture per cent, twenty-four hours later. When we consider the amount of air space in these soils and the amount of soil moisture each retains, the fact that loam usually contains a great deal of moisture and very little air space and that gravel contains very lillle moisture and a great volume of air space is very strikingly shown.

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